# SDR ASAA2016012615029

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 26, 2016
- Submitted: January 28, 2016
- Operation: Air carrier
- Aircraft: [N584AS](https://openairdocs.org/aircraft/N584AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35682
- Aircraft time: 32,441 hours, 9,683 cycles
- System (JASC): [2824 · Fuel Transfer Valve](https://openairdocs.org/jasc/2824)
- Part: Transfer Pump
- Condition: Malfunctioned
- Location: Fuel System
- Stage of operation: CR
- How discovered: O
- Nature of condition: N
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2016012615029

## Discrepancy

WITH CENTER TANK FUEL REMAINING AND WITH ALL 6 FUEL PUMPS ON, RT MAIN TANK SHOWED LOSS OF 500 POUNDS IN FIRST HR OF FLIGHT.  ACFT GROUNDED.  ACCOMPLISHED FQIS OPS TEST, REF AMM 28-41-00.  NO FAULTS IN CURRENT STATUS OR FAULT HISTORY LAST FLIGHT.  FQIS GROUND TEST GOOD.  TRANSFERED FUEL BETWEEN CTR & NR 2 TANKS.  NO FLUCTUATIONS OF FUEL INDICATION.  TRANSFERED FUEL BACK. BEFORE FUEL TRANSFER, SUMPED NR 2 TANK.  NO WATER FOUND. SUSPECT WATER AT TIME OF INDICATION ISSUE.  REF COMPARISON CHECK ACCOMPLISHED PREVIOUS DAY.

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