# SDR AALA202110114799

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 8, 2021
- Submitted: October 11, 2021
- Operation: Air carrier
- Aircraft: [N840NN](https://openairdocs.org/aircraft/N840NN), registered now
- Make and model: Boeing 737823
- Aircraft serial: 33518
- Aircraft time: 34,066 hours, 13,832 cycles
- System (JASC): [3150 · Central Warning](https://openairdocs.org/jasc/3150)
- Part: Switch
- Condition: Defective
- Location: Zone 200 - Fuse
- Stage of operation: TO
- How discovered: V
- Nature of condition: J
- Precautionary procedure: C
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202110114799

## Discrepancy

AIRCRAFT WAS GROUNDED: TAKEOFF CONFIGURATION WARNING HORN ON TAKEOFF ROLL. TAKEOFF REJECTED LOW SPEED LESS THAN 10 KNOTS. TROUBLE SHOT AND FOUND SPEEDBRAKE TAKEOFF WARNING SWITCH DEFECTIVE. REPLACED SWITCH S651 PER AMM 31-51-03.

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