# SDR SWAA2026040785717

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 2, 2026
- Submitted: April 7, 2026
- Operation: Air carrier
- Aircraft: [N229WN](https://openairdocs.org/aircraft/N229WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 32498
- Aircraft time: 66,674 hours, 40,051 cycles
- Engine: Cfmint CFM567B242
- System (JASC): [7320 · Fuel Controlling System](https://openairdocs.org/jasc/7320)
- Part: Hmu
- Condition: Faulted
- Location: Nr 1 Engine
- Stage of operation: CL
- How discovered: O
- Nature of condition: R, J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA2026040785717

## Discrepancy

NR 1 ENGINE N1 ROLLED BACK 10% AT CLIMB OUT.   REF TTG8Q01BFMVQ FOR REPLACEMENT OF HMU AND FUEL PUMP PACKAGE. PERFORMED TESTS 8; 12 AND 13 PER POWER PLANT TEST REFERENCE TABLE AMM 71-00-00. TESTS PASSED. A/C STILL NEEDS TEST 15 (85% N1 LEAK CHECK).;[02] PERFORMED TASK 71-00-00-SWA-823-F00 LEAK CHECK AFTER 85% N1 ENGINE RUN PER AMM 71-00-00. VERIFIED TASK MT 773-11-00 WAS COMPLIED WITH PREVIOUSLY.;[03] UPDATING PARTS IN MAINTENANCE REF TTG8Q01BFMVQ FOR INSTALLATION;[04] VERIFIED ALL TASKS WERE COMPLETED ACCORDINGLY PER MT 773-11-00 AND APPLICABLE AMM REFERENCES

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