ASN logo
Last updated: 28 September 2021
Status:Definitief
Datum:donderdag 15 oktober 2015
Tijd:07:18
Type:Silhouette image of generic B743 model; specific model in this crash may look slightly different
Boeing 747-3B3
Luchtvaartmaatschappij:Mahan Air
Registratie: EP-MNE
Constructienummer: 23480/641
Bouwjaar: 1984-04-14 (31 years 6 months)
Aantal vlieguren:92754
Aantal vluchten:17679
Motoren: 4 General Electric CF6-50E2
Bemanning:slachtoffers: 0 / inzittenden: 19
Passagiers:slachtoffers: 0 / inzittenden: 422
Totaal:slachtoffers: 0 / inzittenden: 441
Schade: Groot
Gevolgen: Repaired
Plaats:nabij Tehran-Mehrabad Airport (THR) (   Iran)
Fase: Initiële klim (ICL)
Soort vlucht:Binnenlandse lijnvlucht
Vliegveld van vertrek:Tehran-Mehrabad Airport (THR/OIII), Iran
Vliegveld van aankomst:Bandar Abbas Airport (BND/OIKB), Iran
Vluchtnummer:W51095
Beschrijving:
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 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
Status: Investigation completed
Duration: 1 years
Accident number: A13940723EPMNE
Download report: Final report


Veiligheidsmaatregelen

AAIB Iran issued 6 Safety Recommendations

Show all...

Foto's

photo of Boeing-747-3B3-EP-MNE
accident date: 15-10-2015
type: Boeing 747-3B3
registration: EP-MNE
 

Video, social media

Kaart
Deze kaart geeft het vliegveld van vetrek weer en de geplande bestemming van de vlucht. De lijn tussen de vliegvelden geeft niet de exacte vliegroute weer.
De afstand tussen Tehran-Mehrabad Airport en Bandar Abbas Airport bedraagt 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: languages

Share

Boeing 747

  • 1551+ built
  • 61e ongeval
» safety profile

 Iran
  • 64e zwaarste ongeval (toen het plaatsvond)
  • 68e zwaarste ongeval (op dit moment)
» safety profile