Service difficulty report · Fire Detector · Boeing 737990ER

Difficulty date
October 12, 2021
Submitted
October 18, 2021
Operation
Air carrier
Aircraft
N471AS
Make and model
Boeing 737990ER
Aircraft serial
41703
Aircraft time
26,318 hours, 8,367 cycles
Part
Fire Detector
Part number
4735975
Condition
Inoperative
Location
Fwd Cargo
Stage of operation
NR
How discovered
9
Nature of condition
J
Precautionary procedure
O

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

What was found

DURING CARGO FIRE TEST DETECTOR FAULT LIGHT ILLUMINATED AND FWD CARGO, FIRE LIGHT DOES NOT LIGHT UP. GROUNDED - YES. REPLACED THE FWD CARGO SMOKE DETECTOR B1, OPS NORMAL. REF B737-900 AMM TASK 26-16-01-400-801.