# SDR I5EA0201511300024

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 30, 2015
- Submitted: March 26, 2015
- Operation: Air carrier
- Aircraft: N440US
- Make and model: Boeing 737-4B7
- Registry model: [Boeing 737-4B7](https://openairdocs.org/model/boeing-737-4b7) (OpenAirDocs)
- Aircraft serial: 24811
- Aircraft time: 62,494 hours, 42,629 cycles
- System (JASC): [3418 · Stall Warning System](https://openairdocs.org/jasc/3418)
- Part: Squat Switch
- Condition: Malfunctioned
- Location: Stick Shaker
- Stage of operation: TO
- How discovered: O
- Nature of condition: J
- Precautionary procedure: C
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/I5EA0201511300024

## Discrepancy

STALL WARNING SHAKER ON JUST PAST 80K ON T/O ROLL.  R & R CIRCOIL CARD M990 GROUND SENSING SQUAT SW. FUNCTIONAL CHECK OF CARD AND RELATED SYSTEM GOOD.  STALL WARNING TEST GOOD.

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