Incident · 2011-06-21

What the record says

Event date

2011-06-21

Event type

Incident

Highest injury level

Minor injury

Aircraft

BOEING 757-232 (N6714Q)

Operating rule

Part 121

Operator

DELTA AIR LINES, INC. Operator named in NTSB report

Operated by (per NTSB report)

DELTA AIR LINES INC

Probable cause

Fuel leaking from the fuel flow transmitter that ignited on contact with the engine’s hot cases which resulted in an engine undercowl fire. The fuel leak resulted from the fuel flow transmitter end housing backing off from the main housing, creating a gap that allowed high pressure fuel to escape. Under certain assembly variances and operational load and temperature variations, the end housing joint may not be able to maintain the preload without eventually yielding, which results in the loosening of the joint and the resultant gap.

Flight crew

No flight-crew details recorded in the NTSB accident database for this event.