Service difficulty report · Smoke Detector · Boeing 767223

Difficulty date
July 15, 2025
Submitted
July 16, 2025
Operation
Air carrier
Aircraft
N312AA
Make and model
Boeing 767223
Aircraft serial
22315
Aircraft time
95,113 hours, 24,923 cycles
Part
Smoke Detector
Part number
2156204A
Part serial
410
Condition
Defective
Location
Zone 100
Part time
35,854 hours, 26,923 cycles
Stage of operation
AP
How discovered
V
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

BELOW 1000 FT ON FINAL APPROACH INTO CVG, RECEIVED A FWD EQPT SMOKE EICAS MESSAGE. LANDED WITHOUT INCIDENT. CALLED CFR. CFR VERIFIED THERE WAS NO SMOKE OR FIRE. MAINTENANCE T/S, DETERMINED INTERMITTENT SMOKE INDICATION FROM TS164, E/E SMOKE DETECTOR. REMOVED AND REPLACED SMOKE DETECTOR. CONDUCTED TEST PER IAI MM SUPP 21-58-00 AND AMM 21-58-00. OPS TEST OK. AIRCRAFT RETURNED TO SERVICE. A/C VERIFIED ETOPS 180.