# SDR ASAA2012121993509

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 19, 2012
- Submitted: December 24, 2012
- Operation: Air carrier
- Aircraft: [N594AS](https://openairdocs.org/aircraft/N594AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35191
- Aircraft time: 18,258 hours, 5,666 cycles
- System (JASC): [2840 · Fuel Indicating System](https://openairdocs.org/jasc/2840)
- Part: Compensator
- Part number: 2020202
- Condition: Malfunctioned
- Location: Fuel System
- 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/ASAA2012121993509

## Discrepancy

FUEL QTY AT PREFLIGHT WAS 20.2 AT PUSH BACK FUEL QTY WAS 19.2 THE APU WAS ON FOR A TIME PERIOD OF 20 MIN FUEL GAUGE NR 1 & NR 2 WENT BLANK FOR ABOUT 5 SECONDS, RESPECTIVELY AT DIFFERENT TIME.  ALL 3 FUEL GAUGE READINGS HAVE REDUCE FROM ORIGINAL READING.  ACFT GROUNDED.  FOR ALL INSPECTION, POWER REMOVAL REQUIREMENTS, AND LEAK CHECKS REF TANK ENTRY PERMIT W/C 78528000.  R & R NR 1 FUEL QUANTITY COMP PROBE REF MM 28-41-21.  OPS NORMAL.

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