What was found
AIRCRAFT WAS NOT GROUNDED. DURING DESCENT, 4R LAVATORY SMOKE DETECTOR SOUNDED WITH NO OBSERVED INDICATION OF SMOKE. SUPPLEMENTAL REPORT: REPLACED LAVATORY 4F-R SMOKE DETECTOR, IAW AMM 26-13-01, OPERATIONS CHECK GOOD.
- Difficulty date
- January 23, 2021
- Submitted
- January 29, 2021
- Operation
- Air carrier
- Aircraft
- N784AN
- Make and model
- Boeing 777223
- Aircraft serial
- 29588
- Aircraft time
- 81,029 hours, 9,775 cycles
- System (JASC)
- 2611 · Smoke Detection
- Part
- Smoke Detector
- Part number
- 4755711
- Condition
- False Activation
- Location
- R4 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.