# SDR AALA2020050419009

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 30, 2020
- Submitted: May 4, 2020
- Operation: Air carrier
- Aircraft: [N981NN](https://openairdocs.org/aircraft/N981NN), registered now
- Make and model: Boeing 737823
- Aircraft serial: 31230
- Aircraft time: 14,596 hours, 5,867 cycles
- Engine: Cfmint CFM567B242
- System (JASC): [7320 · Fuel Controlling System](https://openairdocs.org/jasc/7320)
- Part: Hydromech Unit
- Part number: 1853M56P16
- Part serial: BECWD438
- Condition: Unserviceable
- Location: Nr 2 Engine
- Part time: 14,594 hours, 5,867 cycles
- 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/AALA2020050419009

## Discrepancy

AIRCRAFT WAS GROUNDED. FLIGHT ABORTED TWO TAKE OFFS AT LOW SPEED ACCOUNT THE NUMBER TWO ENGINE WAS UNABLE TO ACHIEVE MAX THRUST. REMOVED AND REPLACED #2 ENGINE HYDROMECHANICAL UNIT AND FUEL PUMP PER WORK CARD 73-94-12 AND AMM 73-11-01. OPS AND LEAK CHECKS GOOD. SEE ALSO SDR AALA202005049010 FOR ADDITIONAL PARTS.

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