Cessna 310 Explained

The Cessna 310 is an American four-to-six-seat, low-wing, twin-engine monoplane produced by Cessna between 1954 and 1980. It was the second twin-engine aircraft that Cessna put into production; the first was the Cessna T-50.^[1]

Development

The 310 first flew on January 3, 1953, with deliveries starting in late 1954. The sleek modern lines of the new twin were backed up by innovative features such as engine exhaust thrust augmenter tubes and the storage of all fuel in tip tanks in early models. In 1964, the engine exhaust was changed to flow under the wing instead of the augmenter tubes, which were considered to be noisy.

Typical of Cessna model naming conventions, a letter was added after the model number to identify changes to the original design over the years. The first significant upgrade to the 310 series was the 310C in 1959, which introduced more powerful 2600NaN0 Continental IO-470-D engines. In 1960 the 310D featured swept-back vertical tail surfaces. An extra cabin window was added with the 310F.

The turbocharged 320 Skyknight was developed from the 310F. Equipped with TSIO-470-B engines and featuring an extra cabin window on each side, it was in production between 1961 and 1969 (the 320E was named the Executive Skyknight), when it was replaced by the similar Turbo 310.^[2]

The 310G was certified in 1961^[3] and introduced the canted wingtip fuel tanks found on the majority of the Cessna twin-engine product line, marketed as "stabila-tip" tanks by Cessna, because they were meant to aid stability in flight. A single side window replaced the rear two windows on the 310K (certified in late 1965), with optional three-blade propellers being introduced as well.^[4] Subsequent developments included the 310Q and turbocharged T310Q with a redesigned rear cabin featuring a skylight window, and the final 310R and T310R, identifiable by a lengthened nose containing a baggage compartment. Production ended in 1980.

Over the years there were several modifications to the 310 to improve performance. Noted aircraft engineer Jack Riley produced two variants, The Riley Rocket 310 and the Riley Turbostream 310. Riley replaced the standard Continental 310hp engines with 3500NaN0 Lycoming TIO-540 engines. These turbocharged intercooled engines were installed with three-blade Hartzell propellers in a counter-rotating configuration to further increase performance and single-engine safety. At 5400lb gross weight the aircraft had a weight to power ratio of 7.71lb per horsepower. This resulted in a cruising speed of at 18000feet and a rate of climb.

Operational history

Commercial applications

The Cessna 310 was a common charter aircraft for the many air taxi firms that sprang up in the general aviation boom that followed World War II. The advantages of the Cessna 310 over its contemporaries, such as the Piper PA-23, were its speed, operating costs and aftermarket modifications, such as the Robertson STOL kits that made it popular worldwide for its bush flying characteristics. It could use short runways, while at the same time carrying a large useful load of 2000lb. or more, at speeds that were high for a twin engine piston aircraft.

Military applications

In 1957, the United States Air Force (USAF) selected the Cessna 310 for service as a light utility aircraft for transport and administrative support. The USAF purchased 160 unmodified 310A aircraft with the designation L-27A and unofficially nicknamed Blue Canoe,^[5] later changed to U-3A in 1962. An additional 36 upgraded 310 designated L-27B (later U-3B) were delivered in 1960–61; these aircraft were essentially military 310Fs and as such equipped with the more powerful 2600NaN0 engines and can be identified by their extra cabin windows, longer nose and swept vertical fin. A USAF study after one year of operational service found the U-3A had direct operating costs of less than $12 an hour.^[6] The U-3 saw active service in a support role when the USAF deployed aircraft to South Vietnam during the Vietnam War, where they were used on courier flights between air bases.^{[7] [8]} Some USAF aircraft were later transferred to the U.S. Army and U.S. Navy and the type continued in United States military service into the mid-1970s.

Notable private flights

On December 19, 1992, Cuban defector Major Orestes Lorenzo Pérez returned to Cuba in a 1961 Cessna 310 to retrieve his wife and two sons. Flying without lights, at low speed and very low altitude to avoid Cuban radar, Pérez picked up his family by landing on the coastal highway of Varadero beach, Matanzas Province, 930NaN0 east of Havana and managed a successful safe return to Marathon, Florida.^{[9] [10]}

Variants

310

Initial production variant, powered by two 240hp Continental O-470-B or O-470-M engines with carburetors, with maximum takeoff weight of ;^[11] in production for 1955-1957 model years, 547 built.

310A

Military version of the 310 for the United States Air Force, designated L-27A and later U-3A; with Continental O-470-M engines and maximum takeoff weight of ;^[12] 161 built.^[13]

310B

Model produced in 1958, with new instrument panel,^[14] O-470-M engines and maximum takeoff weight of ;^[15] 225 built.^[16]

310C

Model produced in 1959, with 260hp Continental IO-470-D fuel-injected engines and maximum takeoff weight increased to ;^[17] and minor changes; 260 built.^[18] Unit cost $59,950 in 1959^[19]

310D

First model with swept vertical tail,^[20] other minor detail changes; 268 built for 1960 model year.

310E

Military version of the 310F,^[14] designated the L-27B and later U-3B; with maximum takeoff weight of ;^[21] 36 built.^[22]

310F

Model produced in 1961, with extra cabin window each side, pointed nose and other minor changes;^[14] maximum takeoff weight of ; 155 built.^[23]

310G

First model with canted slimline tip tanks and optional six-seat cabin,^[14] with maximum takeoff weight increased to ^[3] and detail changes,^[14] 156 built in 1962.

310H

Model produced in 1963 with maximum takeoff weight increased to ^[24] and enlarged cabin interior. 148 built.^[14]

E310H

Version of 310H with the 4990lbs maximum takeoff weight of the 310G;^[25] combined total of 148 310H and E310H built.

310I

First model with baggage compartments in rear of engine nacelles, Continental IO-470-U engines and minor detail changes;^[14] 200 built in 1964.

310J

Model produced in 1965 with minor detailed changes^[14] and maximum takeoff weight of .^[26]

310J-1

Version of 310J type-certified in the Utility Category; with maximum takeoff weight increased to ; seating limited to four people instead of the 310J's six; and reduced baggage weight limit.^[27]

E310J

Version of 310J with maximum takeoff weight reduced to ;^[28] combined total of 200 310J, 310J-1 and E310J built.^[29]

310K

First model with optional three-blade propellers^[4] and long 'vista view' side windows;^[14] also increased maximum takeoff weight of with IO-470-V or IO-470-VO engines;^[30] 245 built in 1966.

310L

First model with increased fuel capacity via fuel tanks inside wings and optional fuel tanks in engine nacelles,^[31] also single-piece windshield, redesigned landing gear, and minor changes;^[32] 207 built in 1967.

310M

Revised designation for the 310E.^[14]

310N

Model produced in 1968, with revised instrument panel and provision for optional cargo door and fuel;^[33] 198 built.^[34]

Model produced in 1969, with Continental IO-470-VO engines,^[35] ventral fin and a shorter nose gear leg.^[36]

Version of 310P with turbocharged Continental TSIO-520-B or TSIO-520-BB engines producing 2850NaN0 and maximum takeoff weight of ;^[37] combined total of 240 310P and T310P built.

Last short-nose model, introduced in 1970, with maximum takeoff weight increased to 5300lb^[38] and detailed changes, from the 401st aircraft fitted with a bulged rear cabin roof with rear view window.

T310Q

Version of 310Q with turbocharged Continental TSIO-520-B or TSIO-520-BB engines and maximum takeoff weight increased to 5500lb;^[39] combined total of 871 310Q and T310Q built.^[40]

Last production model, introduced in the 1975 model year, with 285hp Continental IO-520-M or IO-520-MB engines; three-blade propellers as standard; lengthened nose containing a baggage compartment; and 5500lb maximum takeoff weight.^[41]

T310R

Version of 310R with turbocharged Continental TSIO-520-B or TSIO-520-BB engines;^[42] combined total of 1,332 310R and T310R built.^[43]

310S

Original designation for the Cessna 320.

320 Skyknight

Enlarged version of the 310F with six seats, larger cabin and two turbocharged engines; 110 built.

320A Skyknight

First model with canted fuel tanks and minor changes; 47 built.

320B Skyknight

First model with nacelle baggage lockers, minor changes; 62 built.

320C Skyknight

Model with a longer cabin, optional seventh seat and minor changes; 73 built.

320D Executive Skyknight

Model with reshaped rear windows and 285hp TSIO-520-B engines; 130 built.

320E Executive Skyknight

Model with pointed nose, single piece windshield, modified landing gear, increased takeoff weight and minor changes; 110 built.

320F Executive Skyknight

Model with minor changes compared to 320E; 45 built.

L-27A

United States military designation for the 310A, later changed to U-3A.

L-27B

United States military designation for the 310E/310M, later changed to U-3B.

U-3A

L-27A redesignated in 1963.

U-3B

L-27B redesignated in 1963.

Colemill Executive 600

Conversion of models 310F to 310Q, replacing the engines with 350hp Lycoming TIO-540-J2BDs driving four-bladed propellers.^[44]

Riley 65

Conversion offered for models 310 to 310G, replacing the engines with two 240-260 hp (179–194 kW) Continental O-470Ds or -470Ms.^[45]

Riley Super 310

Conversion of Cessna 310/320 by fitting two 310 hp (231 kW) Continental TSIO-520J or 520N engines.^[46]

Riley Turbostream

Conversion of Cessna 310 by fitting two 350 hp Lycoming engines.^[47]

Riley Rocket

Conversion of Cessna 310 by fitting two 290 hp (216 kW) Lycoming IO-540-A1A5 engines and more fuel capacity.

Riley Turbo-Rocket

Riley Rocket with each engine fitted with two Riley-manufactured turbochargers. Cruise speed increased from 252mph to 302mph.^[48]

Operators

Civil

The aircraft is popular with air charter companies and small feeder airlines, and is operated by private individuals and companies.

Military operators

Countries known to have operated the U-3/310 include.

Argentina

• Argentine Air Force — Cessna 310 and 320 models

Bolivia

Colombia

• Colombian Air Force^[49]

Republic of the Congo

France

• French Air and Space Force — 12 operated^[50]

Haiti

• Haiti Air Corps

Indonesia

• Indonesian Air Force^[51]
• Indonesian Army Aviation

Iran

Madagascar

• Air Force of Madagascar — One 310R^[52]

Mexico

• Mexican Naval Aviation^[53]

Paraguay

• Paraguayan Air Force^[54]

Peru

• Peruvian Navy^[55]

Philippines

• Philippine Air Force^[56]

Saudi Arabia

Suriname

• Suriname Air Force^[57]

Tanzania

• Tanzanian Air Force^[58]

United States

• United States Air Force received 196 L-27A and L-27B (later redesignated U-3A and B).^[59]
• United States Army received 25 ex-US Air Force L-27As (later U-3As) and at least 13 L-27Bs (later U-3B) from 1960.^[60]

Uruguay

• Uruguayan Air Force (One 310R)^[61]

Venezuela

• Venezuelan Navy^[62]

Zaire

• Zaire Air Force^[63]

Accidents and incidents

• On October 28, 1959, a Cessna 310 carrying Cuban revolutionary Camilo Cienfuegos disappeared over the Atlantic Ocean on a night flight from Camagüey to Havana. Neither the aircraft nor the body of Cienfuegos were ever found.^[64]
• On November 26, 1962, a Saab Scandia 90A-1, aircraft registration PP-SRA of VASP on a scheduled domestic service in Brazil from São Paulo-Congonhas to Rio de Janeiro-Santos Dumont collided in the air over Paraibuna, São Paulo, with a private Cessna 310 PT-BRQ en route from Rio de Janeiro-Santos Dumont to São Paulo-Campo de Marte. Both were flying on the same airway in opposite directions and failed to have visual contact. The two aircraft crashed killing all 23 passengers and crew of the Saab and the four occupants of the Cessna.^{[65] [66]}
• On July 19, 1967, a Boeing 727 operating as Piedmont Airlines Flight 22 collided with a Cessna 310 near Hendersonville, North Carolina, killing all 79 people on board the Boeing 727 and the three people in the Cessna.^[67]
• On October 16, 1972, US Congressmen Nick Begich of Alaska, and Hale Boggs of Louisiana, disappeared over Alaska while flying in a 310C during a campaign trip.^{[68] [69]}
• On October 4, 1975, a chartered 310Q crashed on final approach to New Hanover County Airport while transporting wrestlers Bob Bruggers, Ric Flair, Johnny Valentine and Tim Woods and promoter David Crockett to a professional wrestling match in nearby Wilmington, North Carolina. Bruggers and Flair were seriously injured, while Valentine was paralyzed and the pilot subsequently died of his injuries. The aircraft was overloaded and its center of gravity was beyond the aft limit; attempting to mitigate these problems, the pilot drained fuel before the flight, causing fuel exhaustion before the aircraft reached the runway.^{[70] [71] [72]}
• On September 11, 1981, a T310P crashed into an upper wall of the Swing Auditorium in San Bernardino, California, killing both aircraft occupants; the crash and a major ensuing fire caused severe damage to the building's roof, structural members, insulation, and about a third of the bleachers. The building was ultimately deemed beyond repair and was razed seven months later.^{[73] [74]}
• On June 29, 1989, concert organist Keith Chapman and his wife were killed when their 310Q piloted by Chapman crashed into the Sangre de Cristo Mountains of the Colorado Rockies while they were returning from a performance in California.^{[75] [76]}

, the US National Transportation Safety Board has recorded 1,787 incidents for Cessna 310s since 12 January 1964. Of these, 436 were fatal.^[77]

References

• Web site: Type Certificate Data Sheet 3A10, Revision 63 . July 29, 2015 . Federal Aviation Administration . November 11, 2023.
• Andrade, John. Militair 1982. London: Aviation Press Limited, 1982.
• Bridgman, Leonard. Jane's All The World's Aircraft 1956–57. New York: The McGraw-Hill Book Company, Inc., 1956.
• Foster . Peter R. . Air Power Analysis: Part One: Columbia, Ecuador, French Guyana, Guyana, Peru, Surinam and Venezuela . World Air Power Journal . Autumn 1997 . 30 . 132–157 . 0959-7050 . 1-86184-004-7 . .
• Harding, Stephen. U.S. Army Aircraft Since 1947. Shrewsbury, UK: Airlife Publishing, 1990. .
• Harvey . Frank . The Air War in Vietnam . Flying . 38–95 . Ziff-Davis Publishing Company . New York . November 1966.
• Michell, Simon. Jane's Civil and Military Aircraft Upgrades 1994–95. Coulsdon, UK: Jane's Information Group, 1994. .
• Book: Simpson, R. W. . Airlife's General Aviation . 1995 . Second . Shrewsbury, UK . Airlife Publishing Ltd . 1-85310-577-5.
• Taylor, John W. R. Jane's All The World's Aircraft 1966–67. London: Sampson Low, Marston & Company, 1966.
• Taylor, John W. R. Jane's All The World's Aircraft 1967–68. London: Sampson Low, Marston & Company, 1967.
• Taylor, John W. R. Jane's All The World's Aircraft 1968–69. London: Sampson Low, Marston & Company, 1968.
• Taylor, John W. R. Jane's All The World's Aircraft 1969–70. London: Sampson Low, Marston & Company, 1969.
• Taylor, John W. R. Jane's All The World's Aircraft 1982–83. London: Jane's Yearbooks, 1982. .

External links

• U-3 description at GlobalSecurity.org

Notes and References

1. Web site: The Cessna 310/320. 2008-05-04. Demand Media. 2008. https://web.archive.org/web/20080409002638/http://www.airliners.net/aircraft-data/stats.main?id=149. 2008-04-09. live.
2. Air Progress. October 1979. 39. Turbo 310. Keith Connes.
3. Type Certificate 3A10, p. 11.
4. Type Certificate 3A10, p. 19.
5. Krivinyi, Nikolaus: World Military Aviation, page 148. Arco Publishing Co., 1977.
6. Phillips, Edward H:Wings of Cessna Model 120 to the Citation III, Flying Books, 1986.
7. Harvey 1966, p. 69.
8. Harvey 1966, p. 80.
9. [Google News]
10. https://www.nytimes.com/1992/12/21/us/cuban-pilot-who-defected-flies-back-for-family.html Cuban Pilot Who Defected Flies Back for Family
11. Type Certificate 3A10, pp. 1–2.
12. Type Certificate 3A10, pp. 2–3.
13. Type Certificate 3A10, p. 3.
14. Simpson 1995, p. 126
15. Type Certificate 3A10, p. 4.
16. Type Certificate 3A10, p. 5.
17. Type Certificate 3A10, pp. 5–6.
18. Type Certificate 3A10, p. 6.
19. New 220-Mph Cessna: 5 Cabin Choices, "Engine Silencer", Fuel-Injection!. Advert . Flying. January 1959. 64. 1. 60–61.
20. Cessna 310 thru 310D (1955–1960) Maintenance Manual, Section 6-10-00. Retrieved June 24, 2017
21. Type Certificate 3A10, p. 8.
22. Type Certificate 3A10, p. 9.
23. Type Certificate 3A10, p. 10.
24. Type Certificate 3A10, p. 13.
25. Type Certificate 3A10, p. 14.
26. Type Certificate 3A10, p. 15.
27. Type Certificate 3A10, pp. 16–18.
28. Type Certificate 3A10, p. 18.
29. Type Certificate 3A10, pp. 17–19.
30. Type Certificate 3A10, pp. 19–20.
31. Type Certificate 3A10, p. 21.
32. Taylor 1967, p. 238.
33. Taylor 1968, p. 254.
34. Web site: Cessna 310 . Aircraft Bluebook . Penton . Summer 2017 . 19 June 2017 . https://web.archive.org/web/20170809162242/http://www.aircraftbluebook.com/Navigation.do?product=ABB&typeId=5&type=Multi+Engine+Piston&makeId=13&make=Cessna&modelId=138&model=CESSNA+310 . 9 August 2017 . live .
35. Type Certificate 3A10, p. 23.
36. Taylor 1969, p. 301.
37. Type Certificate 3A10, pp. 24–25.
38. Type Certificate 3A10, p. 27.
39. Type Certificate 3A10, pp. 28–29.
40. Web site: Cessna 310P and up . Aircraft Bluebook . Penton . Summer 2017 . 19 June 2017 . https://web.archive.org/web/20170809174049/http://www.aircraftbluebook.com/Navigation.do?product=ABB&typeId=5&type=Multi+Engine+Piston&makeId=13&make=Cessna&modelId=139&model=CESSNA+310P+%26+up . 9 August 2017 . live .
41. Type Certificate 3A10, pp. 29–31.
42. Type Certificate 3A10, p. 31.
43. Web site: Cessna 310R (1975 and up) . Aircraft Bluebook . Penton . Summer 2017 . 19 June 2017 . https://web.archive.org/web/20170809173906/http://www.aircraftbluebook.com/Navigation.do?product=ABB&typeId=5&type=Multi+Engine+Piston&makeId=13&make=Cessna&modelId=140&model=CESSNA+310R+%281975+%26+up%29 . 9 August 2017 . live .
44. Mitchell 1994, p. 305.
45. Taylor 1966, p. 314.
46. Taylor 1982, pp. 453–454.
47. Air Progress. September 1989. 29. The Man Who Invented the STC.
48. Taylor 1967, p. 340.
49. Forster World Air Power Journal Autumn 1997, p. 136.
50. Andrade 1982, p. 67.
51. Andrade 1982, p. 106.
52. Andrade 1982, p. 151.
53. Andrade 1982, p. 157.
54. Web site: Paraguay's Military: Internal Security Challenges vs Bloc Obsolescence | Manohar Parrikar Institute for Defence Studies and Analyses. idsa.in.
55. Andrade 1982, p. 179.
56. Andrade 1982, p. 180.
57. Web site: Cessna 310 | Suriname Air Force.
58. Andrade 1982, p. 222.
59. Taylor 1982, p. 347.
60. Harding 1990, pp. 85–86.
61. Andrade 1982, p. 336.
62. Andrade 1982, p. 339.
63. Andrade 1982, p. 342.
64. Thomas, Hugh. 1970,1998. Cuba: The Pursuit of Freedom, pp. 842–3. Da Capo Press, New York.
65. Web site: Accident description PP-SRA and PT-BRQ . Aviation Safety Network . 2 June 2011 . https://web.archive.org/web/20121104005112/http://aviation-safety.net/database/record.php?id=19621126-1 . 4 November 2012 . live .
66. Book: Germano da Silva, Carlos Ari César . O rastro da bruxa: história da aviação comercial brasileira no século XX através dos seus acidentes 1928–1996 . No céu de Paraibuna . EDIPUCRS . 2 . Porto Alegre . 2008 . 214–216 . 978-85-7430-760-2 . pt.
67. Web site: Accident description. 2009-07-25. Aviation Safety Network. June 2006. https://web.archive.org/web/20110625001004/http://aviation-safety.net/database/record.php?id=19670719-0. 2011-06-25. live.
68. News: Aircraft Accident Report Pan Alaska Airways, Ltd. Cessna 310C, N1812H. National Transportation Safety Board. January 31, 1973. July 27, 2017. https://web.archive.org/web/20120422171645/http://libraryonline.erau.edu/online-full-text/ntsb/aircraft-accident-reports/AAR73-01.pdf. April 22, 2012. live.
69. Web site: 17 February 2012 . Hale Boggs — Missing in Alaska . Famous Missing Aircraft . Check-Six . https://web.archive.org/web/20120213231948/http://www.check-six.com/lib/Famous_Missing/Boggs.htm . 13 February 2012 . live .
70. News: NTSB Identification: IAD76AI021. National Transportation Safety Board. January 12, 2024.
71. News: Hassell . Owen . April 23, 2023 . WATCH: Wrestling icon Ric Flair recounts Wilmington plane crash on Joe Rogan podcast . . Wilmington, North Carolina . January 12, 2024.
72. News: . February 25, 2023 . PHOTOS: Ric Flair, Wilmington and the plane crash . . Wilmington, North Carolina . January 12, 2024.
73. News: Plane crashes into Swing hall; two die . Lundahl . Mark . The San Bernardino County Sun . San Bernardino, California . September 12, 1981. January 14, 2024.
74. News: Swing Auditorium: Stones, Hendrix played at the Pavilion's forerunner . Stephens . Mike . The San Bernardino County Sun . San Bernardino, California . January 25, 1987. January 14, 2024.
75. News: Acclaimed organist dies in plane crash. July 4, 1989. UPI. 2019-01-16. https://web.archive.org/web/20190117013315/https://www.upi.com/Archives/1989/07/04/Acclaimed-organist-dies-in-plane-crash/5251615528000/. January 17, 2019. live.
76. Web site: NTSB Report No. DEN89FA154. National Transportation Safety Board. 2019-01-16. https://web.archive.org/web/20181214065344/https://app.ntsb.gov/pdfgenerator/ReportGeneratorFile.ashx?EventID=20001213X28548&AKey=1&RType=HTML&IType=FA. 2018-12-14. live.
77. Web site: Summary of Cessna 310 accidents. 2017-07-27. National Transportation Safety Board. National Transportation Safety Board. July 27, 2017. https://web.archive.org/web/20181222082033/https://www.ntsb.gov/_layouts/ntsb.aviation/Results.aspx?queryId=cb69330e-87e3-4a69-84b6-ffcb83652ddb. December 22, 2018. live.

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