Status: | Accident investigation report completed and information captured |
Date: | Friday 16 February 2018 |
Time: | 18:28 |
Type: |  Fokker 100 |
Operator: | Qeshm Air |
Registration: | EP-FQF |
MSN: | 11444 |
First flight: | 1993 |
Total airframe hrs: | 48654 |
Cycles: | 38040 |
Engines: | 2 Rolls-Royce Tay 650-15 |
Crew: | Fatalities: 0 / Occupants: 7 |
Passengers: | Fatalities: 0 / Occupants: 97 |
Total: | Fatalities: 0 / Occupants: 104 |
Aircraft damage: | Substantial |
Aircraft fate: | Repaired |
Location: | Mashhad Airport (MHD) ( Iran)
|
Phase: | Landing (LDG) |
Nature: | Domestic Scheduled Passenger |
Departure airport: | Tehran-Mehrabad Airport (THR/OIII), Iran |
Destination airport: | Mashhad Airport (MHD/OIMM), Iran |
Flightnumber: | QB1202 |
Narrative:Qeshm Air flight 1202 from Tehran-Mehrabad Airport, Iran, performed a forced landing at Mashhad when the left main landing gear failed to deploy prior to landing.
The aircraft, a Fokker 100, departed Tehran at 16:39 (13:09 UTC). It was descending towards the destination of Mashhad at 17:38 when the undercarriage was selected down. However, the left hand main gear did not deploy. The flight entered a holding pattern and the flight crew worked the related checklists. Twenty minutes later the flight performed a low pass over the runway and entered another holding pattern. The left main gear remained up.
A forced landing was carried out on runway 31R at 18:28. The aircraft swerved to the left and departed the left side of the runway, coming to rest between runway 31R and 31L. An evacuation was carried out.
The next morning the left wing was lifted by a crane. When the lifting belt broke, the wing hit the ground again, causing serious additional damage.
Probable Cause:
Probable causes:
The main cause of this accident was entering foreign contamination to hydraulic system by maintenance activities during C-Check which caused damage on blockage hydraulic flow in restrictor check valve.
The screen filter near hydraulic restrictor check valve was damaged by reflected force of Pollution and sediment available in the hydraulic system between and caused blockage the nozzle downstream to down lock LH landing gear mechanism.
Contributing Factors:
- Insufficient surveillance on maintenance operation of aircraft.
- Lack of enough experience for Qeshm Air maintenance personnel
Accident investigation:
|
Investigating agency: | AAID Iran  |
Status: | Investigation completed |
Duration: | 10 months | Accident number: | A961127EPFQF | Download report: | Final report
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Classification:
Gear-up landing
Runway excursion (veer-off)
Sources:
»
aerospacetalk.ir
Follow-up / safety actions
AAID Iran issued 8 Safety Recommendations
Issued: -- | To: CAO Iran | 96FQF1 |
To check hanger space with coordination of hangar visit plan for maintenance organization to carry out planned base maintenance relevant to projected aircraft hangar visit plan. |
Issued: -- | To: CAO Iran | 96FQF2 |
To require airport operator for establishing an effective disabled aircraft removal plan for their respective aerodromes in particular, planning, response and responsibilities of the relevant parties. |
Issued: -- | To: EASA | 96FQF3 |
The aircraft type certificate holder for the Fokker 100 should set periodic inspections of a hydraulic hose and restrictor in accordance findings of this accident and informed the F100 operators accordingly. |
Issued: -- | To: EASA | 96FQF4 |
Review the design of the filtering hydraulic system at the landing gear retraction of the Fokker F.28 Mark 0100 and require operators to modify their airplanes and procedures to prevent system failure by foreign object contamination |
Issued: -- | To: Qeshm Air | 96FQF5 |
To empower human resources especially quality control in base maintenance operation and consider required training to comply with standards of maintenance and effective supervision on maintenance activities. |
Issued: -- | To: Qeshm Air | 96FQF6 |
Fatigue risk assessment should be done before delivering aircraft certified staff from line maintenance to base maintenance. |
Issued: -- | To: Qeshm Air | 96FQF7 |
To set and revise quality assurance procedures for removal, installation and interchange of aircraft components for safe maintenance actions. |
Issued: -- | To: Qeshm Air | 96FQF8 |
To issue related maintenance tasks to insure prevention of foreign object pollution to the aircraft systems. |
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Photos
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Map
This map shows the airport of departure and the intended destination of the flight. The line between the airports does
not display the exact flight path.
Distance from Tehran-Mehrabad Airport to Mashhad Airport as the crow flies is 747 km (467 miles).
Accident location: Approximate; accuracy within a few kilometers.
This information is not presented as the Flight Safety Foundation or the Aviation Safety Network’s opinion as to the cause of the accident. It is preliminary and is based on the facts as they are known at this time.