# SDR 2001UALA00296

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 21, 2001
- Submitted: April 27, 2001
- Operation: Air carrier
- Aircraft: N560UA
- Make and model: Boeing 757222
- Aircraft serial: 26660
- Aircraft time: 30,225 hours, 11,216 cycles
- Engine: Pwa PW2037
- Engine time: 26 hours
- System (JASC): [2121 · Air Distribution Fan](https://openairdocs.org/jasc/2121)
- Part: Cooling Fan
- Part number: 36169596
- Part serial: P1022C
- Condition: Failed
- Location: Cockpit
- Part time: 2,683 hours, 3,348 cycles
- Stage of operation: CL
- How discovered: O
- Nature of condition: B
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2001UALA00296

## Discrepancy

SMOKE IN CABIN AND COCKPIT. SUPPLEMENTAL DATA UPDATE FOUND COOLING FAN SHAFT SHEARED AND FAN HOUSING BROKEN.  THIS IS THE LATEST CONFIGURATION (-6) WHICH WAS INSTALLED ON THIS APU ON JUNE 11, 1999.  THIS HAS BEEN A LONG TIME PROBLEM, AND HONEYWELL IS WORKING IN FIXING THESE COOLING FAN FAILURES RESULTING IN APU REMOVALS.

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