Mahan A313 at Istanbul on Dec 24th 2015, failed to stop at stand
Last Update: August 29, 2022 / 17:38:57 GMT/Zulu time
No passengers were on board of the bus, the driver was the sole occupant of the bus and remained uninjured.
Passengers reported following the accident the captain announced they had suffered a hydraulic failure resulting in the failure of the brakes.
Airport officials commented the crew shut the engines down when the aircraft reached the parking position and encountered the failure of the brakes. Had the bus not been there by pure coincidence the outcome of the accident could have been far worse.
On Aug 29th 2022 the Turkish UAB released their final report in Turkish only (Editorial note: to serve the purpose of global prevention of the repeat of causes leading to an occurrence an additional timely release of all occurrence reports in the only world spanning aviation language English would be necessary, a Turkish only release does not achieve this purpose as set by ICAO annex 13 and just forces many aviators to waste much more time and effort each in trying to understand the circumstances leading to the occurrence. Aviators operating internationally are required to read/speak English besides their local language, investigators need to be able to read/write/speak English to communicate with their counterparts all around the globe).
The UAB concluded the probable causes of the accident were:
After successful landing on runway 05 during taxi an intense leak in the yellow hydraulic system occurred causing the loss of the brake accumulators.
The aircraft continued taxi with the green hydraulic system in normal braking mode.
The crew can not monitor the availability of the parking brake mode provided by the yellow system, the pressure in the park brake accumulators can not be adequately observed.
After arriving at the stand the aircraft was stopped with the green hydraulic system and park brake applied.
The main reason for the accident was the cockpit crew not applying brake pedal pressure as set in the standard operating procedures when the aircraft began to move despite park brake set.
A contributing factor was a defect in the PBOV (parking brake operating valve).
This article is published under license from Avherald.com. © of text by Avherald.com.
Read unlimited articles and receive our daily update briefing. Gain better insights into what is happening in commercial aviation safety.
Support AeroInside by sending a small tip amount.
A Mahan Air Airbus A310-300, registration EP-MNF performing flight W5-1152 from Tehran Imam Khomeini (Iran) to Beirut (Lebanon), was enroute at FL340…
A Mahan Air Airbus A310-300, registration EP-MNV performing flight W5-1150 from Tehran Imam Khomeini (Iran) to Yerevan (Armenia) with 169 passengers…
A Mahan Air Airbus A300-600, registration EP-MNK performing flight W5-1019 from Ala'Marvdasht to Tehran Mehrabad (Iran) with 121 passengers and 12…
A Mahan Air Avro RJ-100, registration EP-MOI performing flight W5-1085 from Tehran Mehrabad to Zabol (Iran), was enroute at FL250 about 70nm…
A Mahan Air Airbus A340-300, registration EP-MMA performing flight W5-70 from Delhi (India) to Tehran Imam Khomeini (Iran), was climbing out of Delhi…
A Voyageur de Havilland Dash 8-400, registration C-GNSV performing flight UNO-517P from Juba to Malakal (South Sudan) with 14 people on board, landed…
A Swiftair Boeing 737-400 freighter on behalf of West Atlantic Sweden, registration EC-NLS performing flight SWN-5745 from Paris Charles de Gaulle to…
Are you researching aviation incidents? Get access to AeroInside Insights, unlimited read access and receive the daily newsletter.Pick your plan and subscribe
A new way to document and demonstrate airworthiness compliance and aircraft value. Find out more.
ELITE Simulation Solutions is a leading global provider of Flight Simulation Training Devices, IFR training software as well as flight controls and related services. Find out more.
Never miss an article from AeroInside. Subscribe to our free weekly newsletter and join 5375 existing subscribers.
Popular aircraftAirbus A320
Boeing 737-800 MAX
Popular airlinesAmerican Airlines