# SDR CALA2023013100274

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 31, 2023
- Submitted: January 31, 2023
- Operation: Air carrier
- Aircraft: [N34137](https://openairdocs.org/aircraft/N34137), registered now
- Make and model: Boeing 757224
- Aircraft serial: 30229
- Aircraft time: 81,344 hours, 19,487 cycles
- System (JASC): [3414 · Airspeed/Mach Indicator](https://openairdocs.org/jasc/3414)
- Part: Knob
- Condition: Inoperative
- Location: Airspeed Ind
- Stage of operation: DE
- How discovered: O
- Nature of condition: O
- Precautionary procedure: B
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2023013100274

## Discrepancy

AIRSPEED SELECTOR KNOB INOP REMOVED KNOB AND VERIFIED THAT THE SHAFT IS BROKEN. R&R MODE CONTROL PANEL PER AMM 22-11-02-022-001 AND 22-11-02-402-007. PERFORMED MCDP GROUND TEST 4 AND TEST 30PER AMM 22-00-02/201.  ALL TESTS PASSED. AC REMAINS FULL CAPIBILITY. OK TO CONTINUE.

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