Service difficulty report · Clamp · Boeing 747283B

Difficulty date
June 10, 2005
Submitted
July 15, 2005
Operation
Air carrier
Aircraft
N921FT
Make and model
Boeing 747283B
Aircraft serial
21575
Aircraft time
65,275 hours, 14,585 cycles
Engine
Pwa JT9D70A
Engine time
42,978 hours, 9,747 cycles
Part
Clamp
Condition
Failed
Location
Pneumatic Sys
Stage of operation
TX
How discovered
O
Nature of condition
M, J
Precautionary procedure
E

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

What was found

CREW REPORTED NR 1 ENGINE FIRE WARNING SOUNDED ON DESCENT. CLOSED THRUST AND START LEVER, LIGHT WENT OUT. FIRE HANDLE WAS NOT PULLED. REPLACED CLAMP TO HIGH STAGE VALVE, MM 36-13-00. OPS AND LEAK CHECK OK MM 71-00-00.