What was found
R5 LAVATORY SMOKE ALARM SOUNDED ON DESCENT. NO FIRE OR SMOKE NOTED FOUND LAVATORY SMOKE DETECTOR BAD. SMOKE DETECTOR REPLACED. OPS CHECKED OK IAW MM 26-13-00 PG 501.
- Difficulty date
- April 28, 2013
- Submitted
- May 20, 2013
- Operation
- Air carrier
- Aircraft
- N105UA
- Make and model
- Boeing 747451
- Aircraft serial
- 26473
- Aircraft time
- 76,782 hours, 9,020 cycles
- Engine
- Pwa PW4056
- System (JASC)
- 2611 · Smoke Detection
- Part
- Smoke Detector
- Part number
- 2156756A
- Condition
- False Activation
- Location
- Lavatory
- Stage of operation
- DE
- 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.