# SDR ASAA2025021456051

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 14, 2025
- Submitted: February 18, 2025
- Operation: Air carrier
- Aircraft: [N462AS](https://openairdocs.org/aircraft/N462AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 36362
- Aircraft time: 40,312 hours, 12,544 cycles
- Engine: Cfmint CFM567B27E
- System (JASC): [7330 · Engine Fuel Indicating System](https://openairdocs.org/jasc/7330)
- Part: Engine
- Condition: Malfunctioned
- Location: Nr 2
- Stage of operation: NR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2025021456051

## Discrepancy

NO. 1 ENGINE BURNING 200 LB/HR MORE THAN NO. 2 ENGINE. AFTER TURNING OFF CENTER PUMPS NO. 1 FUEL QUANTITY DROPPED QUICKLY TO A 500 LB DIFFERENTIAL. IT FLUCTUATED QUITE A BIT, BUT ENDED UP EQUAL TO NO. 2 FUEL QUANTITY. GROUNDED - YES. FLIGHT CREW OBSERVATION NOTED. REF LOGPAGE #60565040 FOR #1 FQIS DISCREPANCY. MAIN TANK #1 FQIS FAILS SYSTEM TEST REF AMM TASK 28-41-00-730-801. COMP PROBE AND SYSTEM TOTAL CAPACITANCE OUT OF ACCEPTABLE VALUES.

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