# SDR KNNA201197701

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 18, 2011
- Submitted: February 3, 2011
- Operation: Air carrier
- Aircraft: N977UA
- Make and model: Boeing 737291
- Aircraft serial: 21508
- Aircraft time: 64,134 hours, 55,340 cycles
- Engine: Pwa JT8D9
- System (JASC): [3497 · Navigation System Wiring](https://openairdocs.org/jasc/3497)
- Part: Connector
- Condition: Dirty
- Location: Altitude Alert
- Part time: 64,134 hours, 55,340 cycles
- Stage of operation: CR
- How discovered: O
- Nature of condition: P
- Precautionary procedure: H
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/KNNA201197701

## Discrepancy

ALTITUDE ALERT HORN IS INTERMITTENT- BAD CONNECTION AT CONNECTOR PLUG-CLEANED CONNECTOR PLUG- RESEATED CONNECTOR, OPS CHECK GOOD.

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