Service difficulty report · Fire Detector · Boeing 737990ER

Difficulty date
March 30, 2022
Submitted
April 5, 2022
Operation
Air carrier
Aircraft
N448AS
Make and model
Boeing 737990ER
Aircraft serial
36356
Aircraft time
20,884 hours, 6,592 cycles
Part
Fire Detector
Part number
902864
Condition
Inoperative
Location
#1 Engine
Stage of operation
TX
How discovered
C
Nature of condition
L
Precautionary procedure
K

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

What was found

#1 ENGINE FIRE DETECTION LOOP A IS INOPERATIVE. ("A" LOOP DOESN'T TEST AND FAULT LIGHT ILLUMINATED). GROUNDED - YES. REF TSR711760, 2 DECTECTOR HARNESS & FAN LOOP ASSY REPLACED & OPS TEST NORMAL