# SDR HNAA2011091900286

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 12, 2011
- Submitted: September 26, 2011
- Operation: Air carrier
- Aircraft: N331EN
- Make and model: Dhav DHC8311
- Aircraft serial: 279
- Aircraft time: 40,906 hours, 46,932 cycles
- System (JASC): [3150 · Central Warning](https://openairdocs.org/jasc/3150)
- Part: Switch
- Part number: V319
- Condition: Inoperative
- 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/HNAA2011091900286

## Discrepancy

TAKEOFF WARNING HORN SOUNDED ON TAKEOFF ROLL.  DURING ENGINE RUN AND TAKEOFF WARNING CHECK, FOUND NR1 CONDITION LEVER SWITCH 3151-S3 (TO WARNING HORN) OUT OF RIG.   HORN SOUNDED WHEN NR1 LEVER BROUGHT BACK .0625".  REPLACED AND RIGGED SWITCH 3151-S3 IAW MM 76-10-13.  OPS CHECK OF TO WARNING SYS GOOD, CLEARED MEL.

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