# SDR 99UAL900077

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 3, 1999
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N7465U
- Make and model: Boeing 727222
- Aircraft serial: 21919
- Engine: Pwa JT8D15
- System (JASC): [3340 · Exterior Lighting](https://openairdocs.org/jasc/3340)
- Part: Transformer
- Part number: 1431
- Condition: Failed
- Location: Rt Wing
- Stage of operation: IN
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/99UAL900077

## Discrepancy

ALL NAVIGATION LIGHTS ARE INOPERATIVE.  AIRPLANE RESTRICTED TO DAYLIGHT OPERATION ONLY.  *S/D*  REPLACED TRANSFORMER T16.

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