SDR AALA2019111549015

Service difficulty report · Fan · Airbus A321231

Difficulty date: November 12, 2019
Submitted: November 15, 2019
Operation: Air carrier
Aircraft: N587UW
Make and model: Airbus A321231
Aircraft serial: 6236
Aircraft time: 18,480 hours, 7,152 cycles
System (JASC): 2121 · Air Distribution Fan
Part: Fan
Part number: EVT3454HC
Part serial: 164905117
Condition: Failed
Location: Radar Unit
Part time: 18,486 hours, 7,154 cycles
Stage of operation: CL
How discovered: O
Nature of condition: E, B
Precautionary procedure: H

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

AIRCRAFT NOT GROUNDED: PILOT REPORTS LOUD HUMMING NOISE FROM A/C NOSE. HUM GREW LOUDER, FOLLOWED BY STRONG ODOR ON FLT DECK, FWD CABIN DISSIPATING FURTHER AFT. TURNED RADAR OFF, HUMMING STOPPED, SMELL SLOWLY DISSIPATED. MAINTENANCE REPLACED AVIONICS EXTRACT FAN (18HQ) IAW AMM 21-26-51. OPS CHECKS NORMAL.

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