# SDR CALA2013112193156

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 19, 2013
- Submitted: November 22, 2013
- Operation: Air carrier
- Aircraft: [N475UA](https://openairdocs.org/aircraft/N475UA), registered now
- Make and model: Airbus A320-232
- Registry model: [Airbus A320-232](https://openairdocs.org/model/airbus-a320-232) (OpenAirDocs)
- Aircraft serial: 1495
- Aircraft time: 40,885 hours, 17,740 cycles
- Engine: Iae V2527A5
- System (JASC): [2340 · Interphone/Passenger Announcement (PA) System](https://openairdocs.org/jasc/2340)
- Part: Amu
- Part number: AMU2790CB06
- Part serial: 169
- Condition: Faulty
- Location: Nr 2
- Stage of operation: IN
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2013112193156

## Discrepancy

THE FWD & AFT FLIGHT ATTENDANT INTERPHONE HAS HIGH STATIC & WHEN THE FWD FLIGHT ATTENDANT TRIES TO TRANSMIT THE TRANSMISSION SHORTS TO THE PA SYSTEM.  SWAPPING HANDSETS BETWEEN THE FWD & AFT CABIN, NO HELP.  RESETTING THE AMU IS NO HELP.  REPLACED AMU, BOTH HANDSET HARNESSES & FWD CRADLE.  OPERATIONS CHECKED GOOD IAW AMM.

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