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ASN Wikibase Occurrence # 213442
Last updated: 13 November 2018
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Date:07-JUN-2016
Time:11:44 UTC
Type:Silhouette image of generic B77W model; specific model in this crash may look slightly different
Boeing 777-3E9ER
Owner/operator:Biman Bangladesh Airlines
Registration: S2-AFP
C/n / msn: 40123/971
Fatalities:Fatalities: 0 / Occupants: 253
Other fatalities:0
Aircraft damage: Minor
Category:Serious incident
Location:Dhaka-Shahjalal International Airport (DAC/VGHS) -   Bangladesh
Phase: Take off
Nature:International Scheduled Passenger
Departure airport:Dhaka-Shahjalal International Airport (DAC/VGHS)
Destination airport:Dammam-King Fahad International Airport (DMM/OEDF)
Investigating agency: AAIG-BD
Narrative:
Biman Bangladesh Airlines flight BG049, bound for Dammam, Saudi Arabia, was cleared for takeoff from
Dhaka-Shahjalal International Airport, Bangladesh at 11:43 UTC.
During take-off roll, just before reaching V1, at approximately 150 kt, an "ENGINE FAIL" warning came on the PFD
The crew consequently aborted the takeoff.
Investigation revealed that Low Pressure Turbine (LPT) stage 2 vanes broke as a result of thermally induced
damage.
The combustion of fuel in the area appeared to be the only potential heat source responsible for the thermal damage. A portion of the fuel injected into the combustion chamber had not been burned within the chamber as per design, but in the axial station of the turbine center frame (TCF) transition duct respectively LPT stage 1 stator, yet also affecting the LPT stage 2 to 4 stators.
Fuel nozzles were found to be contaminated by Super absorbent polymers (SAP). These apparently entered the fuel tank during refueling.

Debris released from the engine was not removed from the runway immediately and was not noticed by 12 departing flights after the incident.


Sources:

http://www.caab.gov.bd/aaig/S2-AFP.pdf


Revision history:

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