# SDR YYFA200090004

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 9, 2009
- Submitted: September 9, 2009
- Operation: Air carrier
- Aircraft: N836RA
- Make and model: Doug MD 83
- Registry model: [Doug MD 83](https://openairdocs.org/model/mcdonnell-douglas-md-83) (OpenAirDocs)
- Aircraft serial: 53046
- Aircraft time: 37,463 hours, 32,020 cycles
- System (JASC): [2340 · Interphone/Passenger Announcement (PA) System](https://openairdocs.org/jasc/2340)
- Part: Switching Unit
- Part number: 6863000002
- Condition: Defective
- Location: Pa System
- Stage of operation: TX
- How discovered: C
- Nature of condition: L
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/YYFA200090004

## Discrepancy

COCKPIT PA IS INTERMITTENT. SWITCHING UNIT REPLACED.

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