# SDR AALA202102229008

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 19, 2021
- Submitted: February 22, 2021
- Operation: Air carrier
- Aircraft: [N784AN](https://openairdocs.org/aircraft/N784AN), registered now
- Make and model: Boeing 777223
- Aircraft serial: 29588
- Aircraft time: 81,097 hours, 9,790 cycles
- System (JASC): [2140 · Heating System](https://openairdocs.org/jasc/2140)
- Part: Shutoff Valve
- Condition: Inoperative
- Location: Heater
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202102229008

## Discrepancy

AIRCRAFT WAS GROUDED: AFTER LEVEL OFF BULK CARGO AFT MESSAGE FOR HEATER - ON. VERIFIED SWITCH WAS ON. ANIMALS IN THE AFT SO RETURNED TO GRU. ACCOMPLISHED FIM 21-44-00-810-809 FOR MAINTENANCE MESSAGE 21-12022, AND REPLACED BULK CARGO HEAT SHUTOFF VALVE V21443 IAW AMM 21-44-03.

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