# SDR CALA2013082390696

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 23, 2013
- Submitted: August 23, 2013
- Operation: Air carrier
- Aircraft: [N117UA](https://openairdocs.org/aircraft/N117UA), registered now
- Make and model: Boeing 747422
- Aircraft serial: 28810
- Aircraft time: 59,136 hours, 7,042 cycles
- Engine: Pwa PW4056
- System (JASC): [2800 · Aircraft Fuel System](https://openairdocs.org/jasc/2800)
- Part: Switch
- Condition: Inoperative
- Location: Cockpit
- 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/CALA2013082390696

## Discrepancy

FUEL MAIN TANK 1 AFT SWITCH LIGHT IN COCKPIT OVERHEAD WILL NOT ILLUMINATE.  REPLACED NR 1 AFT MAIN TANK PRESSURE SWITCH IAW AMM.  LEAK AND OPS CK OK.

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