Descripción:
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 operators 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 date: 15-10-2015
type: Boeing 747-3B3
registration: EP-MNE
| Estado: | Accident investigation report completed and information captured |
| Fecha: | jueves 15 octubre 2015 |
| Hora: | 07:18 |
| Tipo: |  Boeing 747-3B3 |
| Operador: | Mahan Air |
| Registración: | EP-MNE |
| Numéro de série: | 23480/641 |
| Año de Construcción: | 1984-04-14 (31 years 6 months) |
| Horas Totales de la Célula: | 92754 |
| Ciclos: | 17679 |
| Motores: | 4 General Electric CF6-50E2 |
| Tripulación: | Fatalidades: 0 / Ocupantes: 19 |
| Pasajeros: | Fatalidades: 0 / Ocupantes: 422 |
| Total: | Fatalidades: 0 / Ocupantes: 441 |
| Daños en la Aeronave: | Considerable |
| Consecuencias: | Repaired |
| Ubicación: | cerca Tehran-Mehrabad Airport (THR) ( Irán)
|
| Fase: | Ascenso Inicial (ICL) |
| Naturaleza: | Vuelo Doméstico Programado |
| Aeropuerto de Salida: | Tehran-Mehrabad Airport (THR/OIII), Irán |
| Bandar Abbas Airport (BND/OIKB), Irán | |
| Número de Vuelo: | W51095 |
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)
Probable Cause:
CAUSE of ACCIDENT:
The operators 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:
 |
|
Subsiguiente / acciones de seguridad
AAIB Iran issued 6 Safety Recommendations
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Fotos
accident date: 15-10-2015
type: Boeing 747-3B3
registration: EP-MNE
Video, social media
#Pictures of MahanAir passenger plane Boeing 747 after its emergency landing in #MehrAbad Airport.
#Iran pic.twitter.com/vzFiuXsFTX
Abas Aslani (@abasinfo) October 15, 2015#Iran: MahanAir 747Boeing's engine detaches & falls in an urban area. Plane miraculously returns to #Tehran airport. pic.twitter.com/LAUAlsGNGZ
Bahman Kalbasi (@BahmanKalbasi) October 15, 2015Map
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 Bandar Abbas Airport as the crow flies is 1050 km (656 miles).
Distance from Tehran-Mehrabad Airport to Bandar Abbas Airport as the crow flies is 1050 km (656 miles).
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.
languages: 
Irán
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