# SDR AALA20170929007

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 28, 2017
- Submitted: October 2, 2017
- Operation: Air carrier
- Aircraft: [N823AN](https://openairdocs.org/aircraft/N823AN), registered now
- Make and model: Boeing 787-9
- Registry model: [Boeing 787-9](https://openairdocs.org/model/boeing-787-9) (OpenAirDocs)
- Aircraft serial: 40641
- Aircraft time: 3,523 hours, 368 cycles
- System (JASC): [3412 · Outside Air Temperature Indicator/Sensor](https://openairdocs.org/jasc/3412)
- Part: Probe
- Part number: 0102LL2FV
- Condition: Failed
- Location: Tat
- Stage of operation: CL
- 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/AALA20170929007

## Discrepancy

LEFT AND RIGHT ELECTRONIC ENGINE CONTROL FAULTED AND TOTAL AIR TEMPERATURE PROBE HEATER FAILED.  EMERGENCY DECLARED.  RETURNED TO DEPARTURE, LANDING UNEVENTFUL.  REMOVED AND REPLACED TAT PROBE IAW AMM 34-12-03.  OPS CHECKED GOOD.  AIRCRAFT WAS GROUNDED.

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