# SDR CALA2026031614595

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 12, 2026
- Submitted: March 16, 2026
- Operation: Air carrier
- Aircraft: [N37507](https://openairdocs.org/aircraft/N37507), registered now
- Make and model: Boeing 737-9
- Registry model: [Boeing 737-9](https://openairdocs.org/model/boeing-737-9) (OpenAirDocs)
- Aircraft serial: 43437
- Aircraft time: 18,370 hours, 6,108 cycles
- System (JASC): [3412 · Outside Air Temperature Indicator/Sensor](https://openairdocs.org/jasc/3412)
- Part: Tat Probe
- Condition: Faulted
- Stage of operation: CL
- How discovered: O
- Nature of condition: G, J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2026031614595

## Discrepancy

AFTER TAKEOFF WE LOST VNAV AND ALL FUEL TIME AND DISTANCE DATA. A/T THRUST LIMIT BITE CHECK FMC LEFT AND RIGHT OPS CK OK. T/S OMF TO FAULT CODE 73-43830 TAT FAULT PICKED UP BY BOTH ENGINE 1&2 EEC. REMOVED AND REPLACED TAT REF AMM 34-21-06 NO FAULTS NOTED AT THIS TIME. REF LP 8190715 FOR SEALANT APPLICATION ON TAT PROBE DEFERAL

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.