Service difficulty report · Warning Light · Boeing 7472U3B

Difficulty date
May 30, 2003
Submitted
June 9, 2003
Operation
Air carrier
Aircraft
N922FT
Make and model
Boeing 7472U3B
Aircraft serial
22768
Aircraft time
72,932 hours, 17,901 cycles
Engine
Pwa JT9D7A
Engine time
59,176 hours, 14,513 cycles
Part
Warning Light
Condition
Illuminated
Location
Nr 4 Engine
Stage of operation
TO
How discovered
O
Nature of condition
N
Precautionary procedure
O

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

What was found

ON T/O NR 4 ENG FIRE DET A-LOOP ILLUMINATED FIRE LIGHT. B-LOOP NORMAL. ITEM WAS DEFERRED PER THE DDPG AFTER IT WAS DETERMINED THAT ONE LOOP WAS OPERATIONAL. DEFECTIVE A-LOOP.

More about the Boeing 747-2U3B