# SDR ASAA2019062829870

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 28, 2019
- Submitted: July 1, 2019
- Operation: Air carrier
- Aircraft: [N468AS](https://openairdocs.org/aircraft/N468AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 41735
- Aircraft time: 19,768 hours, 6,479 cycles
- System (JASC): [2121 · Air Distribution Fan](https://openairdocs.org/jasc/2121)
- Part: Cooling Fan
- Part number: 6426512001
- Condition: Noisy
- Location: Weather Radar
- Stage of operation: NR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2019062829870

## Discrepancy

HIGH PITCH NOISE FROM FWD COCKPIT AREA. GROUNDED - YES. ISOLATED TO FAULTY RADAR RT RACK COOLING FAN. REPLACED FAN ASSY. OP CK NORMAL. REF AMM 34-43-00-710-802-001 & 34-43-51-400-801.

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