List of aircraft registration prefixes explained

(Direct link to the ICAO document. Lists in different languages)

This is a list of aircraft registration prefixes used by civil aircraft:

Current (post-1928) allocations

The 1928 markings have been amended and added to over the years, with the current markings being:

Country or region	Registration prefix	Presentation and notes
Afghanistan	YA	YA-AAA to YA-ZZZ.
Albania	ZA^[1]	ZA-AAA to ZA-ZZZ.
Algeria	7T^[2]	7T-VAA to 7T-VZZ Civilian. 7T-WAA to 7T-WZZ Military
Andorra	C3	C3-AAA to C3-ZZZ
Angola	D2	D2-AAA to D2-ZZZ. Colonial allocation CR-L.
Anguilla	VP-A	VP-AAA to VP-AZZ
Antigua and Barbuda	V2	V2-AAA to V2-ZZZ. Colonial allocation Leeward Islands VP-L.
Argentina	LV	LV-AAA to LV-ZZZ (Civilian type certified aircraft) LV-X001 to LV-X999 (experimental) LV-S001 to LV-S999 (LSA) LV-U001 to LV-U999 (Ultralight)
	LQ	LQ-AAA to LQ-ZZZ (Government/police owned aircraft).
Armenia	EK	EK-10000 to EK-99999
Aruba	P4	P4-AAA to P4-ZZZ
Australia	VH	VH-AAA to VH-ZZZ VH-22A to VH-ZZ9^[3]
Austria	OE	OE-AAA to OE-KZZ OE-BAA to OE-BZZ (official use) OE-LAA to OE-LZZ (airlines operating scheduled flights) OE-VAA to OE-VZZ (test registrations) OE-WAA to OE-WZZ (amphibian and sea planes) OE-XAA to OE-XZZ (helicopters) OE-0001 to OE-5999 (gliders) OE-9000 to OE-9999 (motor gliders). Historically A- prior to 1939.
Azerbaijan	4K	4K-AZ1 to 4K-AZ999 4K-10000 to 4K-99999
Bahamas	C6	C6-AAA to C6-ZZZ. Colonial allocation VP-B.
Bahrain	A9C	A9C-AA to A9C-ZZ A9C-AAA to A9C-ZZZ A9C-AAAA to A9C-ZZZZ
Bangladesh	S2	S2-AAA to S2-ZZZ
Barbados	8P	8P-AAA to 8P-ZZZ. Historically VQ-B prior to 1968.
Belarus	EW	EW-10000 to EW-99999 (ex-Soviet Union registrations) EW-100AA to EW-999ZZ (aircraft in general, except those listed below) EW-200PA to EW-299PA (reserved for Boeing 737 aircraft) EW-100PJ to EW-299PJ (reserved for CRJ aircraft) EW-001DA, EW-001PA, EW-001PB, EW-85815 (reserved for official use) EW-0001L to EW-9999L (reserved for balloons)
Belgium		OO-AAA to OO-PZZ OO-RAA to OO-SZZ OO-BAA to OO-BZZ (preferred for balloons) OO-YAA to OO-ZAA (preferred for gliders) OO-01 to OO-499 (home-built aircraft) OO-501 to OO-999 & OO-A01 to OO-Z99 (microlights)
Belize	V3	V3-AAA to V3-ZZZ. Colonial allocation British Honduras VP-H.
Benin	TY	TY-AAA to TY-ZZZ
Bermuda	VP-B, VQ-B
Bhutan	A5	A5-AAA to A5-ZZZ
Bolivia	CP	CP-1000 to CP-9999.
Bosnia and Herzegovina	E7	E7-AAA to E7-ZZZ. Previously T9-.
Botswana	A2	A2-AAA to A2-ZZZ. Colonial allocations VQ-ZE, VQ-ZH.
Brazil	PP, PT, PR, PU, PS	PP-AAA to PP-ZZZ (Prior to the 1970s, reserved for public and parapublic aircraft) PT-AAA to PT-ZZZ (PT-ZAA to PT-ZZZ reserved to experimental non-LSA aircraft) PR-AAA to PR-ZZZ (PR-ZAA to PR-ZZZ reserved to experimental non-LSA aircraft) PU-AAA to PU-ZZZ (Microlights and experimental LSA aircraft) PS-AAA to PS-ZZZ (Available around 2018 onwards) Until the 1990s, helicopters were preferentially registered with an H after the prefix (example: PT-HNY, which belonged to Ayrton Senna)
British Virgin Islands	VP-L	VP-LAA to VP-LZZ.
Brunei	V8	V8-AAA to V8-ZZZ V8-AA1 to V8-ZZ9 V8-001 to V8-999. Colonial allocation VR-U.
Bulgaria	LZ	LZ-AAA to LZ-ZZZ
Burkina Faso	XT	XT-AAA to XT-ZZZ
Burundi	9U	9U-AAA to 9U-ZZZ. Historically BR- prior to 1939; OO-C as part of Ruanda-Urundi to 1962.
Cambodia	XU	XU-AAA to XU-ZZZ. Colonial allocation F-KH. Temporary KW-.
Cameroon	TJ	TJ-AAA to TJ-ZZZ. Colonial allocation VR-N.
Canada	C	C-FAAA to C-FZZZ CF-AAA to CF-ZZZ (Pre 1957 vintage aircraft may be registered CF- instead of C-F)^[4] C-GAAA to C-GZZZ C-IAAA to C-IZZZ (ultralight aeroplanes only) Canada historically CF- from 1929 to 1974 and G-C from 1921 to 1929. Newfoundland historically VO- prior to 1949.
Cape Verde	D4	D4-AAA to D4-ZZZ. Colonial allocation Cape Verde Islands CR-C.
Cayman Islands	VP-C, VQ-C	VP-CAA to VP-CZZ, VQ-CAA to VQ-CZZ. Colonial allocation VR-C.
Central African Republic	TL	TL-AAA to TL-ZZZ
Chad	TT	TT-AAA to TT-ZZZ
Chile	CC	CC-AAA to CC-ZZZ from July 1, 2009 onwards. Gliders had numbers in between registrations (e.g., CC-K14W) and some balloons too (e.g., CC-P1). Ultralights are registered with the markings ULM-number.
China	B	B-0000 to B-9999 B-000A to B-99ZZ (General) Historic: X-C, XT and B-000.^[5]
Colombia	HJ	HJ-1000A to HJ-9999Z (Microlights)
	HK	HK-1000A to HK-9999Z
Comoros	D6	D6-AAA to D6-ZZZ
Congo, Republic of	TN	TN-AAA to TN-ZZZ
Congo, Democratic Republic of	9S	9S-AAA to 9S-ZZZ. Historically OO-C as Belgian Congo to 1960; 9O 1961 to 1963; 9Q 1963 to 2016.
	9T	9T-AAA to 9T-ZZZ (Military)
Cook Islands	E5	E5-AAA to E5-ZZZ
Costa Rica	TI	TI-AAA to TI-ZZZ TI-000 to TI-999 (Ultralight aircraft)
Croatia	9A	9A-AAA to 9A-ZZZ 9A-GAA to 9A-GZZ (Gliders) 9A-HAA to 9A-HZZ (Helicopters) 9A-OAA to 9A-OZZ (Balloons) 9A-UAA to 9A-UZZ (Ultralights) Previously RC-.
Cuba	CU	CU-A1000 to CU-A1999 (Agricultural Aircraft)^[6] CU-C1000 to CU-C1999 (Airlines, cargo operations)^[7] ^[8] CU-H1000 to CU-H1999 (Helicopters) CU-N1000 to CU-N1999 (Private Aircraft)^[9] CU-T1000 to CU-T1999 (Airlines, passenger flights) CU-U1000 to CU-U1999 (Ultralights)^[10] Historically C-C and NM-.
Cyprus	5B	Colonial allocation VQ-C.
Czech Republic	OK	OK-AAA to OK-ZZZ OK-AAA 00 to OK-ZZZ 99 (Microlights) OK-0000 to OK-9999 (Gliders & balloons) OK-A000 to OK-A999 (Ultralight gliders)^[11] OK-X000A to OK-X999Z (Unmanned aircraft)^[12]
Denmark	OY	OY-AAA to OY-ZZZ OY-HAA to OY-HZZ (Helicopters) Any registration containing X (Gliders including Touring Motor Glider) OY-BAA to OY-BZZ (preferred for hot-air balloons) OY-81 to OY-8999 Ultralight trikes (weight shift control) OY-91 to OY-9999 Ultralight 3-axis OY-1001 to OY-1999 Ultralight Gyro
Djibouti	J2	J2-AAA to J2-ZZZ
Dominica	J7	J7-AAA to J7-ZZZ
Dominican Republic	HI	HI100AA to HI999ZZ HI100 to HI1999^[13]
East Timor	4W^[14]	4W-AAA to 4W-ZZZ. Colonial allocation CR-T.
Ecuador	HC	HC-AAA to HC-ZZZ
Egypt	SU	SU-AAA to SU-XXZ SU-ZAA to SU-ZZZ SU-001 to SU-999 (Gliders and balloons)
El Salvador	YS	YS-AAA to YS-ZZZ
Equatorial Guinea	3C	3C-AAA to 3C-ZZZ. Colonial allocation VQ-ZI.
Eritrea	E3	E3-AAAA to E3-ZZZZ
Estonia	ES	ES-AAA to ES-ZZZ ES-0001 to ES-9999 (gliders and motor gliders)
Eswatini	3DC	3DC-AAA to 3DC-ZZZ
Ethiopia	ET	ET-AAA to ET-ZZZ
Falkland Islands	VP-F	VP-FAA to VP-FZZ
Faroe Islands	data-sort-value="OY"	See Denmark
Fiji	DQ	DQ-AAA to DQ-ZZZ. Colonial allocation VQ-F.
Finland	OH	OH-AAA to OH-ZZZ OH-HAA to OH-HZZ (Helicopters) OH-XAA to OH-XZZ (Experimental aircraft) OH-LAA to OH-LZZ (Finnair) OH-001 to OH-999 and OH-1000 to OH-9999 (gliders and motor gliders) OH-G001 to OH-G999 (autogyros) OH-U001 to OH-U999 (ultralights)
France	F	F-AAAA to F-ZZZZ F-AYAA to F-AYZZ (Historic aircraft) F-AZAA to F-AZZZ (Historic aircraft) F-BAAA to F-BZZZ; F-GAAA to F-HZZZ (Based in Mainland France and Corsica) F-CAAA to F-CZZZ (Gliders) F-OAAA to F-OZZZ (Based outside Mainland France and Corsica) F-PAAA to F-PZZZ (Homebuilt) F-WAAA to F-WZZZ (Test and Delivery) F-DAAA to F-DZZZ (Radio controlled Model aircraft) F-JAAA to F-JZZZ (Ultralights) F-ZAAA to F-ZZZZ (State owned) "department number" -AA to -ZZ & -AAA to -ZZZ (Ultralights) [e.g.: 59-ABC for the [[Nord (French department)|Nord ''département'']] ].
French Guiana	F-O	Outside mainland France is F-OAAA to F-OZZZ
French Polynesia	F-O^[15]	Outside mainland France is F-OAAA to F-OZZZ. Was F-OH.
French West Indies	F-O	Outside mainland France is F-OAAA to F-OZZZ
Gabon	TR	TR-AAA to TR-ZZZ TR-KAA to TR-KZZ (Military)
Gambia	C5	C5-AAA to C5-ZZZ. Colonial allocation VP-X.
Georgia	4L	4L-AAA to 4L-ZZZ 4L-10000 to 4L-99999
Germany	D	D-AAAA to D-AZZZ for aircraft with more than 20 t MTOW D-AUAA to D-AZZZ (test registrations) for aircraft manufactured by Airbus at Finkenwerder D-BAAA to D-BZZZ for aircraft with 14–20 t MTOW D-CAAA to D-CZZZ for aircraft with 5.7–14 t MTOW D-EAAA to D-EZZZ for single-engine aircraft up to 2 t MTOW D-FAAA to D-FZZZ for single-engine aircraft from to 2–5.7 t MTOW D-GAAA to D-GZZZ for multi-engine aircraft up to 2 t MTOW D-HAAA to D-HZZZ for rotorcraft D-IAAA to D-IZZZ for multi-engine aircraft from 2–5.7 t MTOW D-KAAA to D-KZZZ for powered gliders D-LAAA to D-LZZZ for airships D-MAAA to D-MZZZ for powered ultralight aircraft D-NAAA to D-NZZZ for non-powered ultralight aircraft D-OAAA to D-OZZZ for manned free balloons D-0001 to D-9999 for gliders. Historic: Danzig YM incorporated into Germany with D prefix. Saar allocated EZ during League of Nations mandate became part of Germany with D prefix in 1935, and used SL during French protectorate from 1947 and became part of Germany again in 1957 with the D prefix. East Germany DM, later replaced by DDR, now part of Germany using D.
Ghana	9G, 9GR	9G-AAA to 9G-ZZZ. Colonial allocation Gold Coast VP-A. 9GR-0AAA to 9GR-9ZZZ for remotely piloted aircraft
Gibraltar	VP-G	VP-GAA to VP-GZZ. Colonial allocation VR-G.
Greece	SX	SX-AAA to SX-ZZZ for powered airplanes SX-H reserved for helicopters SX-U reserved for ultralights SX-101 to SX-999 for gliders
Greenland	data-sort-value="OY"		Previously GL.
Grenada	J3	J3-AAA to J3-ZZZ. Colonial allocation VQ-G.
Guatemala	TG	TG-AAA to TG-ZZZ
Guernsey	2	2-AAAA to 2-ZZZZ. Since 2013.
Guinea	3X	3X-AAA to 3X-ZZZ.
Guinea-Bissau	J5	J5-AAA to J5-ZZZ. Colonial allocation Portuguese Guinea CR-G.
Guyana	8R	8R-AAA to 8R-ZZZ. Colonial allocation VP-G.
Haiti	HH	HH-AAA to HH-ZZZ
Honduras	HR	HR-AAA to HR-ZZZ
Hong Kong	B-H, B-K, B-L^[16]	B-HAA to B-HZZ B-KAA to B-KZZ B-LAA to B-LZZ Colonial allocation VR-H.
Hungary	HA	HA-AAA to HA-ZZZ HA-1111 to HA-9999 (Gliders, Ultralights and motor-gliders)
Iceland	TF	TF-AAA to TF-ZZZ TF-100 to TF-999 (Microlights)
India	VT	VT-AAA to VT-ZZZ. Colonial allocation (Portuguese State of India, incorporated into India in 1961) CR-I.
Indonesia	PK	PK-AAA to PK-ZZZ PK-S001 to PK-S999 (Microlights)
Iran	EP	EP-AAA to EP-ZZZ. Previously RV-.
Iraq	YI	YI-AAA to YI-ZZZ
Ireland	EI, EJ	EI-AAA to EI-ZZZ for normal allocation. EJ-AAAA to EJ-ZZZZ for VIP or business aircraft.
Isle of Man	M	M-AAAA to M-ZZZZ
Israel	4X, 4Z	4X-AAA to 4X-ZZZ. Colonial allocation (Mandate) Palestine VQ-P.
Italy	I	I-AAAA to I-ZZZZ I-PDVA to I-PDVZ Test registrations of Costruzioni Aeronautiche Tecnam I-EASA to I-EASZ Test regisrations of various manufacturers including Tecnam and Augusta Westland I-0001 to I-Z999 (ultralights and advanced ultralights)
Ivory Coast	TU	TU-AAA to TU-ZZZ TU-VAA to TU-VZZ (Military)
Jamaica	6Y	6Y-AAA to 6Y-ZZZ. Colonial allocation VP-J.
Japan	JA, JR^[17]	JA0001 to JA9999 JA001A to JA999Z JA01AA to JA99ZZ JA-AAAA to JA-ZZZZ JAA001 to JAA999 (balloons) JR0201 to JR6ZZZ Ultralight aviation (control surface control type) JR7001 to JR7ZZZ Same as above (weight transfer control type) JR8001 to JR9ZZZ Same as above (parachute type) JR9001 to JR9ZZZ Gyroplane JR0001 to JR0200 Other homebuilt aircraft^[18]
Jersey	ZJ	ZJ-AAA to ZJ-ZZZ
Jordan	JY	JY-AAA to JY-ZZZ. Historically TJ-.
Jordan and Iraq	4YB	International operating agency: Arab Air Cargo
Kazakhstan	UP	UP-AAA01 to UP-ZZZ99 (Suffix letters refer to aircraft type). Changed from UN to avoid confusion with the United Nations.
Kenya	5Y	5Y-AAA to 5Y-ZZZ. Colonial allocation VP-K.
Kiribati	T3	T3-AAA to T3-ZZZ
Kosovo	Z6 plus national emblem^[19]	Z6-AAA to Z6-ZZZ
Kuwait	9K	9K-AAA to 9K-ZZZ.
Kyrgyzstan	EX	EX-100 to EX-999 EX-10000 to EX-99999
Laos	RDPL	RDPL-10000 to RDPL-99999. Previously F-L, XW-.
Latvia	YL	YL-AAA to YL-ZZZ LV-001 to LV-Z99 Ballons & Gliders
Lebanon	OD	OD-AAA to OD-ZZZ. Previously LR-.
Lesotho	7P	7P-AAA to 7P-ZZZ. Colonial allocation VQ-ZA, VQ-ZD.
Liberia	A8	A8-AAA to A8-ZZZ. Previously EL was cancelled by the United Nations due to illegal use.^[20]
Libya	5A	5A-AAA to 5A-ZZZ
Liechtenstein	HB plus national emblem	HB-AAA to HB-ZZZ. Shares allocation with Switzerland.
Lithuania	LY	LY-AAA to LY-ZZZ
Luxembourg	LX	LX-AAA to LX-ZZZ LX-BAA to LX-BZZ (balloons) LX-CAA to LX-CZZ (glider and motorglider) LX-HAA to LX-HZZ (helicopters) LX-XAA to LX-XZZ (ultralights). Previously UL-, L-U.
Macau	B-M	B-MAA to B-MZZ Allocation during Portuguese rule CR-M until 1975 and CS-M from 1995 until 1999.
Madagascar	5R	5R-AAA to 5R-ZZZ
Malawi	7Q	7Q-AAA to 7Q-ZZZ. Colonial allocation VP-Y.
Malaysia	9M	9M-AAA to 9M-ZZZ 9M-EAA to 9M-EZZ (amateur-built) 9M-UAA to 9M-UZZ (microlight). Colonial allocation North Borneo/Sabah VR-O, Sarawak VR-W Straits Settlements VR-S before becoming part of Malaysia. Previously also VR-J, VR-R.
Maldives	8Q	8Q-AAA to 8Q-ZZZ
Mali	TZ	TZ-AAA to TZ-ZZZ
Malta	9H	9H-AAA to 9H-ZZZZZ. Colonial allocation VP-M.9H-111 to 9H-99999 a group of three to five characters, which characters can be a combination of capital letters in Romancharacter and/or Arabic numbers
Marshall Islands	V7	V7-0001 to V7-9999
Martinique	F-O	Outside mainland France is F-OAAA to F-OZZZ
Mauritania	5T	5T-AAA to 5T-ZZZ
Mauritius	3B	3B-AAA to 3B-ZZZ. Colonial allocation VQ-M.
Mexico	XA plus national emblem	XA-AAA to XA-ZZZ (Commercial)
	XB plus national emblem	XB-AAA to XB-ZZZ (Private)
	XC plus national emblem	XC-AAA to XC-ZZZ (Government)^[21]
Micronesia	V6	V6-AAA to V6-ZZZ
Moldova	ER	ER-AAA to ER-ZZZ ER-10000 to ER-99999
Monaco	3A-M	3A-MAA to 3A-MZZ. Previously M-O, CZ-, MC-.
Mongolia	JU	JU-1000 to JU-9999. Previously MT-, HMAY-.
Montenegro	4O	4O-AAA to 4O-ZZZ
Montserrat	VP-M	VP-MAA to VP-MZZ
Morocco	CN	CN-AAA to CN-ZZZ CNA-AA to CNA-ZZ for government & military
Mozambique	C9	C9-AAA to C9-ZZZ. Colonial allocations CR-A, CR-B.
Myanmar	XY	XY-AAA to XY-ZZZ
	XZ	XZ-AAA to XZ-ZZZ (Not Used)
Namibia	V5	V5-AAA to V5-ZZZ
Nauru	C2	C2-AAA to C2-ZZZ
Nepal	9N	9N-AAA to 9N-ZZZ (commercial aircraft) 9N-RAA to 9N-RZZ (government aircraft)
Netherlands	PH	PH-AAA to PH-ZZZ PH-1AA to PH-1ZZ (drones) PH-1A1 to PH-9Z9 (microlights) PH-100 to PH-9999 (gliders)
Netherlands Antilles	PJ	PJ-AAA to PJ-ZZZ
New Zealand	ZK	ZK-AAA to ZK-ZZZ ZK-A**, ZK-B**, ZK-GA*, ZK-HA* restored historical aircraft ZK-FA*, ZK-FB* balloons ZK-G** gliders ZK-H**, ZK-I** helicopters ZK-RA*, ZK-RB*, ZK-RC*, ZK-RD* gyrocopters The remainder for fixed-wing aircraft.^[22]
	ZL	ZL-AAA to ZL-ZZZ
	ZM	ZM-AAA to ZM-ZZZ
Nicaragua	YN	YN-AAA to YN-ZZZ.
Niger	5U	5U-AAA to 5U-ZZZ
Nigeria	5N	5N-AAA to 5N-ZZZ. Colonial allocation VR-N.
North Korea	P^[23]	P-500 to P-999
North Macedonia	Z3	Z3-AAA to Z3-ZZZ Z3-HAA to Z3-HZZ (helicopters) Z3-UA-001 to Z3-UA-999 (ultralight) Z3-OAA to Z3-OZZ (hot air balloons)
Norway	LN	LN-AAA to LN-ZZZ Aircraft in general, except: LN-G**, Gliders LN-O**, Helicopters LN-C**, Balloons LN-Y**, Sports aircraft
Oman	A4O	A4O-AA to A4O-ZZ A4O-AAA to A4O-ZZZ
Pakistan	AP	AP-AAA to AP-ZZZ, civil aircraft, from 1947
Palestine	SU-Y	SU-YAA to SU-YZZ (Temporary assignment of Egyptian prefix)
	E4	E4-AAA to E4-ZZZ. Colonial allocation VQ-P. Israel 4X-.
Panama	HP	HP-1000AAA to HP-9999ZZZ. Previously RX. The three letters (AAA–ZZZ) stand for the ICAO code of the airline, such as CMP for Copa Airlines and PST for Air Panama.
Papua New Guinea	P2	P2-AAA to P2-ZZZ
Paraguay	ZP	ZP-AAA to ZP-ZZZ
Peru	OB	OB-1000 to OB-9999 Previously OB-initial-number, e.g. OB-M-1114, OB-M-1245, OB-T-1274. Previously OA-, O-P.
Philippines	RP	RP-0001 to RP-9999 (Government-owned aircraft) RP-C0001 to RP-C9999 (Aircraft with complete registrations) RP-G0001 to RP-G9999 (Gliders) RP-R0001 to RP-R9999 (Limited registrations) RP-U001A to RP-U999Z (Unmanned Aerial Vehicles) RP-X0001 to RP-X9999 (Experimental certificate) RP-S0001 to RP-S9999 (Non-type certificated aircraft) Previously PI-.
Poland	SP - civil	SP-AAA to SP-ZZZ SP-0*** - Motor-gliders SP-1*** to SP-3***, SP-8*** - Gliders SP-B** - Balloons SP-L** reserved for LOT Polish Airlines SP-S*** - Ultralights SP-X*** - Autogyros SP-Y** - Experimental
	SN - government ^[24]	SN-(two digits 00-99)(two letters) State-owned aircraft (public order services); Last two digits indicate type and owner. X - Helicopter, Y - Aeroplane, A - Other A - Central Institutions**, G (H,D,U*) - Border Guard, P (N,K,W*) - Police, S (F) - Fire Dept**, T - Civil Protection**, R - Govt Rescue Service**, Z (C,E,B) Customs**, M,L - other government services**, Q - trial flights** will be used if primary letters are exhausted; ** currently unused/unseen
Portugal	CR, CS	CR-AAA to CR-ZZZ Aircraft registered in the overseas provinces, used until 1975 CS-AAA to CS-ZZZ Aircraft in general, except: CS-B**, Balloons CS-H**, Helicopters CS-P**, Gliders CS-T**, Airliners (used by most commercial airlines) CS-U**, Ultralight Aircraft CS-X**, Experimental
Qatar	A7	A7-AAA to A7-ZZZ A7-AAA to A7-AZZ: Qatar Airways (Airbus only) A7-BAA to A7-BZZ: Qatar Airways (Boeing only) A7-HAA to A7-HZZ & A7-MAA to A7-MZZ (official use)
Réunion	F-O	Outside mainland France is F-OAAA to F-OZZZ
Romania	YR	YR-AAA to YR-ZZZ YR-1000 to YR-9999 (Gliders and ultralights). YR-D0000 to YR-D9999 (UAVs, drones).
Russia	RA	RA-00001 to RA-99999 (First two digits indicate aircraft type) FLA RF-00001 to FLA RF-99999 or ФЛА РФ-00001 to ФЛА РФ-99999 (Private - no longer valid) RA-0001K to RA-9999K (Ultralight - no longer valid) RA-0001G to RA-9999G (Private - aircraft without type certificate) RA-0001A to RA-9999A (Ultralight)
	RF	RF-00001 to RF-99999 (state-owned aircraft; first two digits indicate owner).
Rwanda	9XR	9XR-AA to 9XR-ZZ. Historically OO-C as part of Ruanda-Urundi to 1962.
Saint Helena/Ascension	VQ-H	VQ-HAA to VQ-HZZ
Saint Kitts and Nevis	V4	V4-AAA to V4-ZZZ. Colonial allocation Leeward Islands VP-L.
Saint Lucia	J6	J6-AAA to J6-ZZZ. Colonial allocation VQ-L
Saint Vincent and the Grenadines	J8	J8-AAA to J8-ZZZ. Colonial allocation VP-V.
Samoa	5W	5W-AAA to 5W-ZZZ, since 1961.
San Marino	T7	T7-AAA to T7-ZZZZZ T7-001 to T7-99999.^[25]
São Tomé and Príncipe	S9	S9-AAA to S9-ZZZ. Colonial allocation CR-S.
Saudi Arabia	HZ	HZ-AAA to HZ-ZZZ HZ-AA1 to HZ-ZZ99 HZ-AAA1 to HZ-ZZZ99 HZ-AAAA to HZ-ZZZZ Historically Hejaz UH-.
Senegal	6V	6V-AAA to 6V-ZZZ
	6W
Serbia	YU	YU-AAA to YU-ZZZ YU-0000 to YU-9999 (Gliders) YU-A000 to YU-Z999 (Ultralight). YU-D0000 to YU-D9999 (Drone/Unmanned Aircraft). Previously Yugoslavia. Previously UN-.
Seychelles	S7	S7-AAA to S7-ZZZ. Colonial allocation VQ-S.
Sierra Leone	9L	9L-AAA to 9L-ZZZ. Colonial allocation VR-L until 1961.
Singapore	9V	9V-AAA to 9V-ZZZ. Colonial allocation VR-S.
Slovakia	OM	OM-AAA to OM-ZZZ OM-AAAA to OM-ZZZZ (Ultralight) OM-M000 to OM-M999 (Microlights) OM-0000 to OM-9999 (Gliders)
Slovenia	S5	S5-AAA to S5-9999 S5-DAA to S5-DZZ (General) S5-HAA to S5-HZZ (Helicopters) S5-PAA to S5-PZZ (Ultralights) S5-MAA to S5-MZZ (Amateur builds) S5-JAA to S5-JZZ (Gyrocopters) S5-1000 to S5-1999 (Oldtimer gliders) S5-3000 to S5-3999 (Single-seater gliders) S5-7000 to S5-7999 (Doubleseater gliders) S5-KAA to S5-KZZ (Motorgliders/sustainers) S5-OAA to S5-OZZ (Hot air balloons) Previously SL-.
Solomon Islands	H4	H4-AAA to H4-ZZZ. Colonial allocation VP-P.
Somalia	6O	6O-AAA to 6O-ZZZ. Previously 6OS.
South Africa	ZS	ZS-AAA to ZS-ZZZ (type certified aircraft)
	ZT	ZT-RAA to ZT-RZZ (type certified rotorcraft) and ZT-TAA to ZT-TZZ (civil RPAS)^[26]
	ZU	ZU-AAA to ZU-ZZZ (non-type certified aircraft).
South Korea	HL	HL0000 to HL0599 for glider HL0600 to HL0799 for airship HL1000 to HL1799 for piston engine HL2000 to HL2099 for piston engine HL5100 to HL5499 for turboprop HL6100 to HL6199 for piston engine helicopter HL7100 to HL7199 for single turbojet HL7200 to HL7299, HL7500 to HL7599, HL7700 to HL7799, HL8000 to HL8099, HL8200 to HL8299, HL8300 to HL8399, HL8500 to HL8599 for twin-jet aircraft HL7300 to HL7399 for tri-jet aircraft HL7400 to HL7499, HL7600 to HL7699, HL8400 to HL8499, HL8600 to HL8699 for quad-jet aircraft HL9100 to HL9699 for turboshaft helicopter HL-C000 to HL-C999 for ultralight^[27] From 1919 until 1936, F-K. Colonial allocation incorporated into Korea in 1963.
South Sudan	Z8	Z8-AAA to Z8-ZZZ
Spain	EC	EC-AAA to EC-WZZ (Civil Aircraft) EC-YAA to EC-ZZZ (Homebuilt aircraft) EC-AA0 to EC-ZZ9 (Ultralight) EC-001 to EC-999 (Test and delivery)
	EM	EM-AAA to EM-ZZZ (Military)
Sri Lanka	4R	4R-AAA to 4R-ZZZ. Colonial allocation Ceylon VP-C. Then CY- from 1950 to 1953.
Sudan	ST	ST-AAA to ST-ZZZ. Previously SN- and FT-.
Suriname	PZ	PZ-AAA to PZ-ZZZ PZ-HAA to PZ-HZZ (helicopters) PZ-TAA to PZ-TZZ (commercial transport) PZ-UAA to PZ-UZZ (agriculture crop-dusters)
Sweden	SE	SE-AAA to SE-ZZZ SE-AAA to SE-CZZ (prop aircraft, general use) SE-DAA to SE-DZZ (jets) SE-EAA to SE-GZZ (prop aircraft, general use) SE-HAA to SE-HZZ (helicopters) SE-IAA to SE-IZZ (prop aircraft, general use) SE-JAA to SE-JZZ (helicopters) SE-KAA to SE-MZZ (prop aircraft, general use) SE-RAA to SE-RZZ (jets) SE-SAA to SE-UZZ (sailplanes and gliders) SE-VAA to SE-VZZ (ultralights) SE-XAA to SE-XZZ (homebuilts) SE-YAA to SE-YZZ (ultralights) SE-ZAA to SE-ZZZ (lighter than air) SE-A01 to SE-Z99 (test and delivery)
Switzerland	HB plus national emblem	General pattern: HB-AAA to HB-ZZZ, with HB-1 to HB-9999 for Gliders and Motorgliders. The registration often denotes the aircraft type and maker. Some examples: HB-Axx two-engined aircraft from 5.7 to 15 tons, Aircraft over 15 tons due to shortage of Jxx. HB-Bxx balloons HB-Cxx single-engined Cessnas under 5.7 tons HB-Dxx and HB-Kxx other single-engined aircraft under 5.7 tons HB-Fxx Swiss-produced aircraft like PC-6 and PC-12 HB-Ixx and HB-Jxx aircraft over 15 tons, including DC-3 HB-Nxx and HB-Pxx single-engined Pipers under 5.7 tons HB-Vxx business jets under 15 tons HB-Xxx helicopters HB-Yxx experimental aircraft HB-Zxx helicopters Also used by Liechtenstein. Previously CH-.
Syria	YK	YK-AAA to YK-ZZZ
Taiwan	B	B-00000 to B-99999^[28]
Tajikistan	EY	EY-10000 to EY-99999
Tanzania	5H	5H-AAA to 5H-ZZZ. Colonial allocation Tanganyika VR-T and Zanzibar VP-Z.
Thailand	HS	HS-AAA to HS-ZZZ
	U	U-A00 to U-Z99. Use for ultralight aircraft.
Togo	5V	5V-AAA to 5V-ZZZ
Tonga	A3	A3-AAA to A3-ZZZ
Trinidad and Tobago	9Y	9Y-AAA to 9Y-ZZZ. Colonial allocation VP-T.
Tunisia	TS	TS-AAA to TS-ZZZ
Turkey	TC	TC-AAA to TC-ZZZ TC-BAA to TC-BZZ (Hot air balloons) TC-HAA to TC-HZZ (Helicopters) TC-PAA to TC-PZZ (Gliders) TC-UAA to TC-UZZ (Ultralights and microlights) TC-ZAA to TC-ZZZ (Agricultural aircraft)
Turkmenistan	EZ	EZ-A100 to EZ-Z999
Turks and Caicos	VQ-T	VQ-TAA to VQ-TZZ
Tuvalu	T2	T2-AAA to T2-ZZZ
Uganda	5X	5X-AAA to 5X-ZZZ. Colonial allocation VP-U prior to 1962.
Ukraine	UR	UR-AAA to UR-ZZZ UR10000 to UR99999 UR-AAAA to UR-ZZZZ (private aircraft)
United Arab Emirates	A6	A6-AAA to A6-ZZZ A6-GY1 to A6-GY9 (reserved for SkyDive Dubai / Gyrocopters) A6-SD1 to A6-SD9 (reserved for Skydive Dubai)
	DU	DU-001 to DU-999 (Dubai Police aircraft)
United Kingdom		G-AAAA to G-ZZZZ G-1-1 to G-99-99 (UK aircraft test serials for test & delivery purposes)
United Nations	4U	4U-AAA to 4U-ZZZ
United States	N	N1 to N99999 N1A to N9999Z N1AA to N999ZZ. Prior to 1948 the letter 'N' was usually suffixed by one of the six following; 'C' for Commercial, 'L' for Limited, 'P' for Private, 'R' for Restricted, 'S' for State or 'X' for Experimental.
Uruguay	CX	CX-AAA to CX-ZZZ.
Uzbekistan	UK	UK10000 to UK99999
Vanuatu	YJ	YJ-AA1 to YJ-ZZ99
Venezuela	YV	YV1000 to YV9999 YV100T to YV999T YV100E to YV999E (training) YVO100 to YVO999 (Official use)
Vietnam	VN	VN-1000 to VN-9999 VN-A100 to VN-A999 (turbo jet engine) VN-B100 to VN-B999 (turbo prop engine) VN-C100 to VN-C999 (internal combustion engine) Previously XV- (South Vietnam).
Yemen	7O	7O-AAA to 7O-ZZZ. Historically 4W- until 1978 (North Yemen, Yemen Arab Republic). Previously YE-.
Zambia	9J	9J-AAA to 9J-ZZZ. Colonial allocation Northern Rhodesia VP-R and VP-Y.
Zimbabwe	Z	Z-AAA to Z-ZZZ. Colonial allocation Southern Rhodesia VP-W and VP-Y.

Post-1928 table notes

Pre-1928 allocations

Note: in the suffix pattern, n represents a number, x represents a letter.

Note: This table mistakenly lists Newfoundland pre-1928 as being part of Canada. It should be listed as a separate country. The information listed for Newfoundland is inaccurate and/or incomplete as a result.

Country or region	Registration prefix	Suffix pattern	1913 radio call letters
Abyssinia	A-B	A-Bxxx
Afghanistan	Y-A	Y-Axxx
Albania	B-A	B-Axxx
Argentina	R-A	R-Axxx	LIA to LRZ
Australia	G-AU^[29]	G-AUxx	VHA to VKZ
Austria-Hungary and Bosnia-Herzegovina			HAA to HFZ, OGA to OMZ and UNA to UZZ
Belgium	O-B	O-Bxxx	ONA to OTZ
Bolivia	C-B	C-Bxxx	none
Brazil	P-B	P-Bxxx	SNA to STZ
Canada	G-C	G-Cxxx, except G-CYxx	VAA to VGZ (Newfoundland: VOA to VOZ)
	G-CY (government aircraft, including military)^[30]	G-CYxx
Bulgaria	B-B	B-Bxxx	LXA to LZZ
Chile	B-C	B-Cxxx	COA to CPZ
China	X-C	X-Cxxx	none
Colombia	C	C-n to C-nnn	none
Costa Rica	TI-	TI-xxx
Cuba	C-C	C-Cxxx	none
Czechoslovakia	L-B	L-Bxxx
Danzig
	Y-M	Y-Mxxx	Not applicable
	Dz	Dz-nnn
Denmark	T-D	T-Dxxx	OUA to OZZ
Dominica	Z-D	Z-Dxxx
Dominican Republic	HI	HIxxx
Ecuador	E-E	E-Exxx
Egypt			SUA to SUZ
El Salvador	Y-S	Y-Sxxx
Estonia	E-A	E-Axxx
Finland	K-S	K-Sxxx
France	F	F-xxxx	F and UAA to UMZ
Germany	D	D-nnnn	A, D and KAA to KCZ^[31]
Greece	S-X	S-Xxxx	SVA to SZZ
Guatemala	L-G	L-Gxxx
Haiti	H-H	H-Hxxx
Hejaz	A-H	A-Hxxx
Honduras	X-H	X-Hxxx
Hungary
	H-H	H-Hxxx
	H-O	H-Oxxx
India	G-I	G-Ixxx	VTA to VWZ
Italy	I	I-xxxx	I
Japan	J	J-xxxx	J
Latvia	B-L	B-Lxxx
Liberia	L-L	L-Lxxx
Lithuania	Z-L	Z-Lxxx
Luxembourg	L-U	L-Uxxx
Mexico			XAA to XCZ
Monaco	M-M	M-Mxxx	CQA to CQZ
	M-O	M-Oxxx
Morocco			CNA to CNZ
Netherlands	H-N	H-Nxxx	PAA to PMZ
New Zealand	G-NZ	G-NZxx	VLA to VMZ
Nicaragua	A-N	A-Nxxx
Norway			LAA to LHZ
Panama	S-P	S-Pxxx
Persia	P-I	P-Ixxx
Peru	O-P	O-Pxxx
Poland	P-P	P-Pxxx
Portugal	C-P	C-Pxxx	CRA to CTZ
Romania	C-R	C-Rxxx	CVA to CVZ
Russia	R-R	R-Rxxx, RR-xxx	R
Serbia-Croatia-Slovenia	X-S	X-Sxxx
Siam	H-S	H-Sxxx	HGA to HHZ
South Africa	G-UA	G-UAxx	VNA to VNZ
Spain	M	M-xxxx	EAA to EGZ
Sweden	S-A	S-Axxx	SAA to SMZ
Switzerland	HB	HB-nnn
United Kingdom	K^[32]	K-nnn	B, G and M (British colonies not autonomous: VPA to VSZ)
	G-E	G-EAxx, G-EBxx, G-EDCA
	G-F (lighter than air craft)	G-FAAx
	G-G (gliders)	G-GAAx
United States	N	N-xxxx	KDA to KZZ, N and W
Uruguay	C-U	C-Uxxx	CWA to CWZ

Pre-1928 table notes

External links

• Web site: 2023-06-01 . AIRCRAFT NATIONALITY MARKS, NATIONAL EMBLEMS AND COMMON MARKS . live . International Civil Aviation Organization . https://web.archive.org/web/20230722221524/https://www.icao.int/safety/airnavigation/NationalityMarks/Nationality_Marks_en.pdf . 2023-07-22.
• Book: ICAO . 2012 . 6 . Annex 7, Aircraft Nationality and Registration Marks . live . https://web.archive.org/web/20230324064040/https://www.bazl.admin.ch/dam/bazl/de/dokumente/Fachleute/Regulationen_und_Grundlagen/icao-annex/icao_annex_7_aircraftnationalityandregistrationmarks.pdf.download.pdf/icao_annex_7_aircraftnationalityandregistrationmarks.pdf . 15 . 9789292490119 . 2023-03-24 . International Civil Aviation Organization . en.
• Book: Robertson, Bruce . Aircraft Markings of the World 1912-1967 . Aero Publishers . 1976 . 21–115 . 9780900435096 . live . https://web.archive.org/web/20230722075912/https://www.abebooks.com/9780900435096/Aircraft-Markings-World-1912-1967-Bruce-0900435097/plp . 2023-07-22.
• Web site: Aircraft Nationality Assignments . Federal Aviation Administration (United States) . 2013-05-02 . dead . https://web.archive.org/web/20131224100411/http://www.faa.gov/air_traffic/publications/atpubs/CNT/4-1.htm . 2013-12-24.

Notes and References

1. Web site: 2023-06-01 . Civil aircraft registration country code prefix - The World Factbook . live . https://web.archive.org/web/20230624135115/https://www.cia.gov/the-world-factbook/field/civil-aircraft-registration-country-code-prefix/ . 2023-06-24 . www.cia.gov.
2. Web site: 2020-09-10 . Federal Aviation Authority Administrative Order JO 7340.2K Contractions - Section 2 . live . https://web.archive.org/web/20230608181111/https://www.faa.gov/documentLibrary/media/Order/7340.2K_Bsc_w_Chg_1_2_and_3_dtd_8-12-21.pdf . 2023-06-08 . United States Federal Aviation Authority.
3. Web site: 2022-09-16 . Coming soon – changes to aircraft registration marks . dead . https://web.archive.org/web/20230201200530/https://www.casa.gov.au/first-release-alphanumeric-aircraft-registration-marks-coming-soon . 2023-02-01 . Civil Aviation Safety Authority.
4. Web site: 2019-01-09 . Chapter 4 - Aircraft Identification . dead . https://web.archive.org/web/20190109020651/http://www.tc.gc.ca/eng/civilaviation/publications/tp11957-chapter4-ident-92.htm . 2019-01-09 . www.tc.gc.ca . Transport Canada.
5. News: 中国飞机注册号的背后，原来有这么多故事 - Behind the Chinese aircraft registration number, it turns out that there are so many stories . dead . https://web.archive.org/web/20210125002736/https://new.qq.com/omn/20190310/20190310A0EPAX.html . 2021-01-25 . 2019-03-10 . new.qq.com . ZH.
6. Web site: Photos: Antonov An-2 Aircraft Pictures . Airliners.net . 2011-06-25 . 2013-07-01.
7. Web site: Photos: Tupolev Tu-204CE Aircraft Pictures . Airliners.net . 2007-08-02 . 2012-02-17.
8. Web site: Photos: Mil Mi-8P Aircraft Pictures . Airliners.net . 2001-03-03 . 2012-02-17.
9. Web site: Photos: Cessna 337 Super Skymaster Aircraft Pictures . Airliners.net . 2001-02-24 . 2012-02-17.
10. Web site: Photos: Polarismotor FIB 582 Aircraft Pictures . Airliners.net . 2012-02-17.
11. Web site: 2012-11-15 . Decree No. 155/2005 Coll. of the Ministry of Informatics of the Czech Republic, § 9 (3)h) . live . https://web.archive.org/web/20230426060551/https://aim.rlp.cz/predpisy/predpisy/dokumenty/L/L-7/data/print/L-7_cely.pdf . 2023-04-26 . aim.rlp.cz . cs.
12. Web site: Ministerstvo Dopracy ČR . 2012-05-30 . L 7 Poznávací Značky Letadel . live . https://web.archive.org/web/20181104201847/http://lis.rlp.cz/predpisy/predpisy/dokumenty/L/L-7/data/print/L-7_cely.pdf . 2018-11-04 . lis.rlp.cz . CS.
13. Web site: 2008-12-01 . RAD-45 - Product Identification, Nationality Marks and Aircraft Registration . live . https://web.archive.org/web/20230710112025/https://acd74.club/wp-content/uploads/2020/06/RAD-45.pdf . 2023-07-10 . acd74.club . ES.
14. Web site: REPÚBLICA DEMOCRÁTICA DE TIMOR-LESTE . 2020-10-28 . Aeronautical Information Publication of East Timor, see GEN 2 1-1, § 4.1 . dead . https://web.archive.org/web/20201028010920/http://www.gov.east-timor.org/CAA/gen.pdf . 2020-10-28 . www.gov.east-timor.org.
15. Web site: OSAC . 2008-02-01 . MARQUES DE NATIONALITE ET D'IMMATRICULATION DES AERONEFS . dead . https://web.archive.org/web/20160328091931/http://www.regles-osac.com/OSAC/fascicules.nsf/b2916504c56ce9d0c12566c0005a60d0/9c35613ae3b7fafbc12578e9005006e0/$FILE/RP211021.pdf . 2016-03-28 . documentation.osac.aero . fr.
16. Web site: Civil Aviation Department Hong Kong . 2023-07-07 . GEN 2.1 MEASURING SYSTEM, AIRCRAFT MARKINGS, HOLIDAYS . live . https://web.archive.org/web/20230601123119/https://www.hkatc.gov.hk/HK_AIP/AIP/GEN/HK_GEN2.1.pdf . 2023-06-01 . www.hkatc.gov.hk.
17. Web site: 2022-12-10. 鐃緒申鐃塾居申鐃緒申 の編集 - 航空軍事用語辞典 - Dictionary of Aviation and Military Terms . live . https://web.archive.org/web/20230130190216/http://mmsdf.sakura.ne.jp/public/glossary/pukiwiki.php?%A5%A2%B9%D4 . 2023-01-30 . mmsdf.sakura.ne.jp . JA.
18. Web site: 2022-12-10 . 鐃緒申鐃塾居申鐃緒申 の編集 - 航空軍事用語辞典 - Dictionary of Aviation and Military Terms . live . https://web.archive.org/web/20230130190216/http://mmsdf.sakura.ne.jp/public/glossary/pukiwiki.php?%A5%A2%B9%D4 . 2023-01-30 . mmsdf.sakura.ne.jp . JA.
19. Web site: Civil Aviation Authority of the Republic of Kosovo . 2023-07-08 . Regulation no 11/2011 amending and supplementing Regulation no 2/2009 on aircraft registration and marking . live . https://web.archive.org/web/20230708042154/https://caa.rks-gov.net/wp-content/uploads/2015/11/Regulation-11-2011-Amending-and-supplementing-Regulation-no-02-2009-on-aircraft-registration-and-marking.pdf . 2023-07-08 . caa.rks-gov.net.
20. Web site: The New Humanitarian | Government grounds aircraft . 22 January 2001 .
21. Web site: Online Mexican Civil Aircraft Register? Civil Aviation Forum. Airliners.net. 9 September 2015.
22. Web site: 2022-09-02 . Advisory Circular AC 47-1 - Aircraft Registration and Marking . live . https://web.archive.org/web/20230219181828/https://www.aviation.govt.nz/assets/rules/advisory-circulars/ac047-1.pdf . 2023-02-19 . aviation.govt.nz.
23. Web site: 2023-07-07 . AIRCRAFT NATIONALITY MARKS, NATIONAL EMBLEMS AND COMMON MARKS . live . https://web.archive.org/web/20230504225938/https://www.icao.int/safety/airnavigation/NationalityMarks/Nationality_Marks_en.pdf . 2023-05-04 . International Civil Aviation Organization.
24. Web site: 2002-12-03 . ROZPORZĄDZENIE MINISTRA SPRAW WEWNĘTRZNYCH I ADMINISTRACJI - Dz.U.2002.205.1739 . live . https://web.archive.org/web/20230710120315/https://sip.lex.pl/akty-prawne/dzu-dziennik-ustaw/prowadzenie-rejestru-statkow-powietrznych-lotnictwa-sluzb-porzadku-16993773 . 2023-07-10 . OpenLEX . pl.
25. Web site: San Marino Aircraft Registry . 2022-02-05 . smar.aero . https://web.archive.org/web/20211008090717/https://www.smar.aero/registration_of_aircraft.php . 2021-10-08 . dead.
26. Web site: safedrone.co.za . safedrone.co.za.
27. Web site: 2017-07-18 . 항공안전법시행규칙 - Aviation Safety Act Enforcement Rule . live . https://web.archive.org/web/20190817055108/https://www.law.go.kr/%EB%B2%95%EB%A0%B9/%ED%95%AD%EA%B3%B5%EC%95%88%EC%A0%84%EB%B2%95%EC%8B%9C%ED%96%89%EA%B7%9C%EC%B9%99/(20170718,00440,20170718)/%EC%A0%9C13%EC%A1%B0 . 2019-08-17 . www.law.go.kr . KO.
28. Web site: 2013-03-20 . Article 22, Regulations of Aircraft Registration (Taiwan) . live . https://web.archive.org/web/20230426060554/https://law.moj.gov.tw/Eng/LawClass/LawAll.aspx?PCode=K0090006 . 2023-04-26 . Laws & Regulations Database of The Republic of China (Taiwan).
29. Book: British Civil Aircraft Registers 1919-1978 . John . Appleton . Ian G . Cave . 1978 . Midland Counties Publications . Earl Shilton . 7 . 0-904597-15-6.
30. Book: Griffin . John A. . Stachiw . Anthony L. . 2009 . Early Canadian Military Aircraft Acquisitions, Dispositions, Colour Schemes & Markings Volume I: Aircraft Taken on Strength through 1920 . Kitchener . Aviaeology . 978-0-9780696-6-7.
31. Web site: White . Thomas H. . 2023-01-01 . United States Callsign Policies . live . https://web.archive.org/web/20230407215314/https://earlyradiohistory.us/recap.htm . 2023-04-07 . earlyradiohistory.us.
32. Used 1919-20, K-100 to K-175 allocated, reallocated to G-EAxx series in 1920.Book: British Civil Aircraft Registers 1919-1978 . John . Appleton . Ian G . Cave . 1978 . Midland Counties Publications . Earl Shilton . 3 . 0-904597-15-6.