# SDR CALA2014060291200

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 31, 2014
- Submitted: June 3, 2014
- Operation: Air carrier
- Aircraft: [N120UA](https://openairdocs.org/aircraft/N120UA), registered now
- Make and model: Boeing 747422
- Aircraft serial: 29166
- Aircraft time: 61,892 hours, 7,130 cycles
- Engine: Pwa PW4056
- System (JASC): [2820 · Aircraft Fuel Distribution System](https://openairdocs.org/jasc/2820)
- Part: Pressure Switch
- Condition: Dirty
- Location: Fuel System
- Stage of operation: IN
- How discovered: C
- Nature of condition: L
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2014060291200

## Discrepancy

NUMBER 4 AFT BOOST PUMP LOW PRESS LIGHTS ARE INOPERATIVE.  CLEANED NR 4 AFT BOOST PUMP PRESS SWITCH & LOW PRESS LIGHT.  OPERATIONS NORMAL.

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