# SDR AALA202405242924

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 17, 2024
- Submitted: May 24, 2024
- Operation: Air carrier
- Aircraft: [N767AJ](https://openairdocs.org/aircraft/N767AJ), registered now
- Make and model: Boeing 777223
- Aircraft serial: 33539
- Aircraft time: 68,796 hours, 8,726 cycles
- System (JASC): [2160 · Cabin Temperature Control System](https://openairdocs.org/jasc/2160)
- Part: Valve
- Part number: UNKNOWN
- Condition: Inoperative
- Location: Trim Air
- Stage of operation: CL
- How discovered: O
- Nature of condition: B
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202405242924

## Discrepancy

AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS NOT DECLARED DUE TO: ZONE E TEMPERATURE INCREASED AIR CONDITION RESET FAILED ADDITIONALLY MULTIPLE SMOKE ALARMS SOUNDED AND SMELLED SMOKED IN FIRST CLASS CABINS; AIRCRAFT AIR INTERRUPTED BACK TO AND LANDED SAFELY AT BOS.   REMOVED AND REPLACED ZONE-E TRIM AIR VALVE. OPERTIONAL AND LEAK CHECK GOOD, BUT ODOR CONTINUES WITH ZONE-B TRIM AIR SELECTED. PER AMM 21-61-02.

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