Service difficulty report · Smoke Detector · Airbus A320232

Difficulty date
December 20, 2025
Submitted
December 23, 2025
Operation
Air carrier
Aircraft
N436UA
Make and model
Airbus A320232
Aircraft serial
638
Aircraft time
87,610 hours, 35,177 cycles
Part
Smoke Detector
Part number
PPA110200
Condition
False Activation
Location
Zone 100
Stage of operation
LD
How discovered
O
Nature of condition
N
Precautionary procedure
B

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

What was found

PILOTS REPORT AFT CARGO SMOKE INDICATION ON ECAM WITH ANNUNCIATOR 5-8 MINS FROM LANDING. NO VISABLE SMOKE IN CABIN & NO ODOR DETECTED. FIRE DEPARTMENT DID NOT PICK UP ANYTHING ON INFRARED SCANNERS AFTER LANDING. UPON OPENING AFT CARGO DOOR, NO UNUSUAL CONDITIONS WERE IMMEDIANTLY NOTICED. FAULT WAS NOT ACTIVE & NO HISTORY OF FAULT IN 90 DAYS. POST FLT REPORT SHOWS SMOKE DET FAULT, FAILURE MSG, SMOKE DET LOOP. REF TSM 26-17-00-810-807-A FOR SMOKE DET LOOP FAULT, ACCOMPLISHED TEST OF AFT PIT SMOKE DETECTORS & TEST PASSED. ACCOMPLISHED VISUAL INSP OF DETECTORS & CONNECTORS IN AFT PIT & NO DEFECTS NOTED. REPLACED AFT TWO SMOKE DETECTORS IN AFT PIT, 5WH & 6WH AS A PRECAUTION IAW AMM 26-16-15-400-001-A, & INSTALLATION TEST PASSED.

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