# SDR UALA2012080804281

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 30, 2012
- Submitted: September 8, 2012
- Operation: Air carrier
- Aircraft: [N121UA](https://openairdocs.org/aircraft/N121UA), registered now
- Make and model: Boeing 747422
- Aircraft serial: 29167
- Aircraft time: 55,621 hours, 6,525 cycles
- Engine: Pwa PW4056
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Cover
- Part number: 65B529738
- Condition: Cracked
- Location: Emergency Light
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UALA2012080804281

## Discrepancy

FOUND DOOR 4R EVAC COVER CRACK.  THIS IS A .250 INCH CRACK IN THE EVAC SWITCH GUARD.  ALL FUNCTIONS OF GUARD AND SWITCH ARE NORMAL.  ONLY THE COVER CRACK.  EVAC FUNCTION NORMAL.  REPLACED CRACKED EVAC COVER.

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