Air Vanuatu Flight 241 Explained

Air Vanuatu Flight 241
Occurrence Type:Accident
Summary:Runway excursion during emergency landing due to pilot error and loss of situational awareness.[1]
Site:Bauerfield International Airport, Port Vila, Vanuatu
Total Fatalities:0
Total Injuries:13
Total Survivors:43
Plane1 Image:Air Vanuatu ATR72 (16555733838).jpg
Plane1 Image Upright:1.2
Plane1 Alt:Photograph of the aircraft involved in the accident.
Plane1 Caption:YJ-AV71, the aircraft involved in the accident
Plane1 Type:ATR-72-500
Plane1 Operator:Air Vanuatu
Plane1 Tailnum:YJ-AV71
Plane1 Origin:Whitegrass Airport, Tanna Vanuatu
Plane1 Destination:Bauerfield International Airport, Port Vila, Vanuatu
Plane1 Occupants:43
Plane1 Passengers:39
Plane1 Crew:4
Plane1 Fatalities:0
Plane1 Injuries:13
Plane1 Survivors:43 (all)
Plane2 Image:Unity Airlines Islander, Tanna, Vanuatu, June 2009 - Flickr - PhillipC.jpg
Plane2 Image Upright:1.2
Plane2 Alt:Photograph of the Unity Airlines Britten-Norman Islander aircraft involved in the accident
Plane2 Caption:YJ-OO9, the aircraft involved in the accident
Plane2 Type:Britten-Norman Islander
Plane2 Operator:Unity Airlines
Plane2 Tailnum:YJ-OO9
Plane2 Occupants:0
Plane3 Type:Britten-Norman Islander
Plane3 Operator:Air Taxi
Plane3 Tailnum:YJ-AL2
Plane3 Occupants:0

Air Vanuatu Flight 241 was a regularly scheduled domestic passenger flight between Whitegrass Airport, Tanna and Bauerfield International Airport, Port Vila, Vanuatu. The aircraft primarily involved was an Air Vanuatu ART-72-500, registered with the call sign YJ-AV71.

While over Erromango, the aircraft's right engine caught fire. While the pilots were able to regain control, the pilots botched their response after shutting the engine down. After landing in Port Vila, the pilots tried to use reverse-thrust to taxi and collided with two Britten-Norman Islanders. Thirteen of 43 people on board were injured due to the prior engine fire.

Aircraft & crew

The aircraft involved in the accident were:

The crew consisted of:

Flight

Flight 241 was a domestic scheduled passenger flight from Whitegrass Airport, Tanna to Bauerfield International Airport, Port Vila Vanuatu. On 28 July 2018, the ATR-72 suffered an engine fire in the right engine while over the island of Erromango.[4] Passengers witnessed a fire in the engine and reported smoke in the cabin. The aircraft temporarily went into an uncontrolled roll before the crew regained control and shut the engine down.[2]

Upon landing in Port Villa, the aircraft departed the runway and collided with two Britten-Norman Islander aircraft belonging to Air Taxi and Unity Airlines. The aircraft belonging to Air Taxi was severely damaged, with its vertical stabilizer ripped off. It was damaged beyond repair. The other plane, of Unity Airlines, was also damaged beyond repair. Although nobody was injured in the collision, thirteen passengers were treated for smoke inhalation due to the prior fire.

All 4 crew and 39 passengers on board evacuated the aircraft without injury. The pilots of the ATR-72 reported that they had no brakes or nose wheel steering, which they gave as the reason for the runway excursion and subsequent collision.

Investigation

The Civil Aviation Authority of Vanuatu requested Papua New Guinea's Accident Investigation Commission to investigate the accident. Canada's Transportation Safety Board also assisted the investigation.[6]

The preliminary report was released by the commission on August 10, 2018, which discarded several potential causes such as weather conditions. The report also revealed no signs of a fire occurring before or after the crash. Survival factors were also analysed, such as how well the evacuation was executed.

According to the preliminary report, the aircraft suffered substantial damage to the propellers and right landing gear after it struct and tore off the vertical stabilizer and rudder of the first Britten Norman Islander. The ATR-72's right landing gear then crushed the fuselage of another Islander, destroyign it.

Causes

The Papua New Guinea Accident Investigation Commission released their final report on October 29, 2019. The report stated that the engine failure was not the direct cause of the accident.

Following the engine fire, smoke inside the cabin led the pilots to declare an emergency and begin immediate descent. The smoke activated the "ELEC SMK" (electric smoke) warning, an ambiguous system to the two pilots. The pilot in command (PiC) became distracted in trying to identify and correct the warning.[7]

The co-pilot attempted to rectify the warning by going through the "Electrical Smoke" checklist. His inexperience and introverted personality left the PiC to manage most of the emergency in a blatant failure of Crew Resources Management.

Apart of the "Electrical Smoke" checklist was another checklist known as "QRH SMOKE" which lacked information. The lack of information and the burden falling to one person caused the pilots to not consider other issues and instead followed the checklist.

As part of the QRH checklist, the generator powering the ACW was shut down. This isolated the direct current bus tie contractor, triggering a loss of power in hydraulic systems, including the brakes, and activation of further warning lights. This further distracted the crew, who then started the wrong pre-landing checklist.

The isolation of the DC BTC and the still shut-down right engine caused all systems powered by the right DC to shut down due to a lack of power. This then further activated more warnings, reducing situational awareness as pilots attempted to address these further problems

This lack of situational awareness led the pilots to use reverse thrust while on the ground, despite both the aircraft's brakes and ground control being unavailable. The pilots were not aware of their lack of brakes, and quickly lost control before striking the two Britten-Norman Islanders.

Aftermath

Following the accident, the Papua New Guinea Accident Investigation Commission released two safety recommendations to Air Vanuatu, focusing on pilot and cabin crew training. Derick Nice of Air Vanuatu said that these recommendations have already been implemented and that Vanuatu Civil Aviation Authority has already acted accordingly.

Three safety recommendations were issued to the aircraft manufacturer that directed them to review relevant checklists for pilots. Air Vanuatu agreed with the recommendations but stated that an internal investigation found the design of the ATR 72-500's warning system was also a contributing factor to the accident. The airline then discontinued service with the aircraft and scheduled their fleet's replacement by Airbus A220 aircraft.[8]

See also

Notes and References

  1. News: Fox . Liam . Air Vanuatu crash report highlights lack of emergency training for pilots and crew . 17 May 2024 . . . 27 October 2020 . https://web.archive.org/web/20230208165702/https://www.abc.net.au/pacific/programs/pacificbeat/air-vanuatu-crash-report-highlights-lack-of-emergency-training/12816460. 8 February 2023. live.
  2. Web site: Accident: Vanuatu AT72 at Port Vila on Jul 28th 2018, engine fire, runway excursion, collision with 2 other aircraft . Simon . Hradecky . Aviation Herald . 28 July 2018 . https://web.archive.org/web/20180829122610/http://avherald.com/h?article=4bbaba28&opt=0 . 29 August 2018 . dead .
  3. Web site: YJ-OO9 hull loss description . Aviation Safety Network . 4 August 2018.
  4. Web site: Accident description . Aviation Safety Network . 28 July 2018.
  5. Web site: YJ-AL2 Non hull-loss description . Aviation Safety Network . 4 August 2018.
  6. Web site: PRELIMINARY REPORT AIC 18-1002 Air Vanuatu Operations Limited ATR 72-500 Loss of directional control during landing roll Bauerfield International Airport, Port Vila REPUBLIC OF VANUATU 28 July 2018 . dead . https://web.archive.org/web/20180811075643/http://www.aic.gov.pg/pdf/PreRpts/AIC%2018-1002%20YJ-AV71.pdf . 11 August 2018 . 10 August 2018 . Accident Investigation Commission.
  7. Web site: FINAL REPORT AIC 18-1002 Air Vanuatu Operations Limited YJ-AV71 ATR 72-500 Loss of directional control during landing roll Bauerfield International Airport, Port Vila REPUBLIC OF VANUATU 28 July 2018 . 29 February 2024 . Via: Aviation-Safety.Net.
  8. Web site: Hakwa . Charles . 2019-11-01 . Air Vanuatu responds to PNG Accident Investigation Report . 2024-02-29 . Vanuatu Daily Post . en.