Service difficulty report · Coupling · Boeing 7472U3B

Difficulty date
June 3, 2003
Submitted
July 7, 2003
Operation
Air carrier
Aircraft
N922FT
Make and model
Boeing 7472U3B
Aircraft serial
22768
Aircraft time
73,270 hours, 17,975 cycles
Engine
Pwa JT9D7Q
Engine time
55,763 hours, 13,554 cycles
Part
Coupling
Part number
713723
Condition
Sheared
Location
Nr 3 Engine
Stage of operation
TX
How discovered
O
Nature of condition
O
Precautionary procedure
K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

NR N2 INDICATION ON NR 3 ENGINE, DURING START - ENGINE DID NOT START PYLON AND START VALVE LIGHTS SHOW AIR PRESS TO STARTER BUT NO ROTATION. REMOVED AND REPLACED PNUEMATIC STARTER ALSO COUPLING WAS SHEARED.

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