Accident Boeing 747-3B3 EP-MNE, Thursday 15 October 2015
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Date:Thursday 15 October 2015
Time:07:18
Type:Silhouette image of generic B743 model; specific model in this crash may look slightly different    
Boeing 747-3B3
Owner/operator:Mahan Air
Registration: EP-MNE
MSN: 23480/641
Year of manufacture:1986
Total airframe hrs:92754 hours
Cycles:17679 flights
Engine model:General Electric CF6-50E2
Fatalities:Fatalities: 0 / Occupants: 441
Other fatalities:0
Aircraft damage: Substantial, repaired
Category:Accident
Location:near Tehran-Mehrabad Airport (THR) -   Iran
Phase: Initial climb
Nature:Passenger - Scheduled
Departure airport:Tehran-Mehrabad Airport (THR/OIII)
Destination airport:Bandar Abbas Airport (BND/OIKB)
Investigating agency: AAIB Iran
Confidence Rating: Accident investigation report completed and information captured
Narrative:
Mahan Air flight 1095 returned to land at Tehran-Mehrabad Airport, Iran after suffered an uncontained engine failure.
The aircraft, a Boeing 747-300, registered EP-MNE operated a scheduled flight from Mehrabad International Airport to Bandar Abbas Airport, carrying 19 flight crew and 422 passengers. The aircraft departed from Tehran at 07:16 hours local time.
About 07:18, while climbing through 7500 feet, the no.3 General Electric CF6-50E2 engine suffered an uncontained failure. Some parts of the engine detached and struck engine no. 4, as well as aircraft structure. The aircraft hydraulic systems no 1, 3 and 4 failed due to impact of debris from engine no.3. An emergency landing was made back at Tehran at 07:53.

Investigation revealed that the engine failure was initiated by vibration as a result of unbalance of the engine HPT module, which caused crack propagation in the low pressure turbine (LPT)

CAUSE of ACCIDENT:
The operator’s fault to modify the ENG# 3 with AD requirement, and ineffective action for N1 Vibration which caused uncontained engine failure.
Contributing factors:
- Insufficient operator maintenance & engineering performance
- Lack of effective monitoring in operators line maintenance
- Lack of support for engine parts and mandatory information from the manufacturer
- Lack of effective monitoring in Mahan air concerning operation, training and technical divisions.

Accident investigation:
cover
  
Investigating agency: AAIB Iran
Report number: A13940723EPMNE
Status: Investigation completed
Duration: 12 months
Download report: Final report

Sources:


History of this aircraft

Other occurrences involving this aircraft

23 September 2013 EP-MNE Mahan Air 0 Kerman International Airport (KER) min

Images:


photo (c) Ken Fielding; Dubai Airport (DXB/OMDB); 24 March 2010

Revision history:

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