# SDR 2001FA0000214

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 6, 2001
- Submitted: August 27, 2001
- Operation: General aviation
- Aircraft: [N15SP](https://openairdocs.org/aircraft/N15SP), registered now
- Make and model: Cndair CL604
- Aircraft serial: 5402
- System (JASC): [2340 · Interphone/Passenger Announcement (PA) System](https://openairdocs.org/jasc/2340)
- Part: Interphone
- Part number: 600591463
- Condition: Unserviceable
- Location: Equip Bay
- Part time: 570 hours
- Stage of operation: TX
- 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/2001FA0000214

## Discrepancy

ON TAXI IN, CREW EXPERIENCED A LOUD CONTINUOUS SQUEAL IN THEIR HEADSETS AND ALSO OVER THE COCKPIT SPEAKERS.  COMMUNICATION WAS IMPOSSIBLE WITH THE TOWER.  OUR CUSTOMER SERVICE REP HAD US DISCONNECT THE HEADPHONE/MIC JACK ASSEMBLY IN THE AFT EQUIPMENT BAY.  THE SQUEAL WENT AWAY.  A NEW UNIT WAS ORDERED AND INSTALLED.  A NEW UNIT WAS ORDERED AND INSTALLED.  THE SYSTEM IS ONLY ACTIVE WITH WEIGHT ON WHEELS , BUT IT COULD STILL POSE A SERIOUS COMMUNICATION PROBLEM ON THE GROUND AT A BUSY AIRPORT.

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