# SDR CALA2026031814648

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 17, 2026
- Submitted: March 18, 2026
- Operation: Air carrier
- Aircraft: [N17264](https://openairdocs.org/aircraft/N17264), registered now
- Make and model: Boeing 737-8
- Registry model: [Boeing 737-8](https://openairdocs.org/model/boeing-737-8) (OpenAirDocs)
- Aircraft serial: 66596
- Aircraft time: 15,423 hours, 5,298 cycles
- System (JASC): [2730 · Elevator Control System](https://openairdocs.org/jasc/2730)
- Part: Computer
- Part number: CB70500001
- Part serial: B1181
- Condition: Failed
- Location: Elevator Feel
- Part time: 15,422 hours, 5,298 cycles
- Stage of operation: TX
- How discovered: O
- Nature of condition: J
- Precautionary procedure: D
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2026031814648

## Discrepancy

ELEVATOR FEEL DIFFERENTIAL LIGHT ON BEFORE TAKE OFF.  NO DIFFERENCE IN HYD PRESSURE.  PERFORMED FIM 27-31 TASK 803, INITIAL EVALUATION, AND FAULT ISOLATION STEP D (1) OMF EXISTING FAULTS SHOWS NO RELATED MSG, FEEL DIFFERENTIAL LIGHT REMAINS ON.  CHECKED ELEVATOR FEEL COMPUTER AT CONNECTORS D14122 & D22303 BOTH CHECKED GOOD IAW SSM 27-31-37-101, AND FIM 27-31 TASK 803. BUT SUSPECT ELEVATOR FEEL COMPUTER HAS AN INTERMITTANT INTERNAL PROBLEM.   REMOVED AND INSTALLED A NEW ELEVATOR FEEL COMPUTER UP TO & INCLUDING STEP 3.G.(6)(K). WORK PERFORMED IN REVENUE WITH AMM 27-31-37.   REFERENCE LOG PAGE #8247443 FOR RIG PIN REMOVAL. INSTALLED ELEVATOR FEEL COMPUTER. OPS CHECKS GOOD IAW AMM 27-31-37-400-801.

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