# SDR CALA2025120911969

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 6, 2025
- Submitted: December 9, 2025
- Operation: Air carrier
- Aircraft: [N77578](https://openairdocs.org/aircraft/N77578), registered now
- Make and model: Boeing 737-9
- Registry model: [Boeing 737-9](https://openairdocs.org/model/boeing-737-9) (OpenAirDocs)
- Aircraft serial: 67613
- Aircraft time: 7,415 hours, 2,386 cycles
- System (JASC): [3421 · Attitude Gyro and Indicating System](https://openairdocs.org/jasc/3421)
- Part: Aoa
- Part number: 0861FL1
- Part serial: 27883
- Condition: Missing
- Location: Zone 100
- Part time: 7,382 hours, 2,378 cycles
- Stage of operation: NR
- How discovered: O
- Nature of condition: C, D
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2025120911969

## Discrepancy

RIGHT ANGLE OF ATTACK (AOA) SENSOR MISSING .   BIRD STRIKE.   REPLACED RT AOA IAW AMM 34-21-05.   INSPECTED BOTH RT PITOT PROBES. NO DEFECTS NOTED SENSOR, ANGLE 0.

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