# SDR ASAA2020101833382

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 18, 2020
- Submitted: October 20, 2020
- Operation: Air carrier
- Aircraft: [N403AS](https://openairdocs.org/aircraft/N403AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 41730
- Aircraft time: 30,173 hours, 9,765 cycles
- Engine: Cfmint CFM567B27E
- System (JASC): [7330 · Engine Fuel Indicating System](https://openairdocs.org/jasc/7330)
- Part: Transmitter
- Part number: 1853M48P03
- Part serial: FDTM0241
- Condition: Faulty
- Location: Fuel Flow
- Part time: 30,190 hours, 9,769 cycles
- Stage of operation: IN
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2020101833382

## Discrepancy

NR 1 ENGINE TREND DATA SHOWS A GRADUAL SHIFT IN CRUISE DELTA FUEL FLOW INDICATION ERRORS ARE SUSPECT.  GROUNDED-YES.  ACCOMPLISHED REMOVAL AND REPLACEMENT OF THE FUEL FLOW TRANSMITTER, NO LEAKS FOUND ON THE FUEL FLOW TRANSMITTER, REF B737-900 AMM 73-31-01.

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