# SDR AALA202012029014

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 30, 2020
- Submitted: December 2, 2020
- Operation: Air carrier
- Aircraft: [N951NN](https://openairdocs.org/aircraft/N951NN), registered now
- Make and model: Boeing 737823
- Aircraft serial: 33327
- Aircraft time: 19,912 hours, 7,689 cycles
- Engine: Cfmint CFM567B242
- System (JASC): [7320 · Fuel Controlling System](https://openairdocs.org/jasc/7320)
- Part: Hmu
- Part number: 1853M56P12
- Part serial: 1181
- Condition: Inoperative
- Location: Rt Engine
- Stage of operation: TO
- How discovered: O
- Nature of condition: R
- Precautionary procedure: C
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202012029014

## Discrepancy

AIRCRAFT WAS GROUNDED.  RT ENGINE DID NOT ACHIEVE TARGET N1 ON TAKEOFF WITH AUTOTHROTTLE ENGAGED.  MANUALLY ADVANCED RT THRUST LEVER, NO ADDITIONAL THRUST PRODUCED.  ON CLIMBOUT PAST 5000 FT, RT ENGINE OPERATED NORMALLY AND MATCHED LT ENGINE.  REPLACED RT HYDROMECHANICAL UNIT AND RT FUEL PUMP (AALA202012029016), IAW AMM 73-11-01.  OPERATIONS CHECK GOOD.

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