# SDR CALA2022032300764

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 23, 2022
- Submitted: March 23, 2022
- Operation: Air carrier
- Aircraft: [N76515](https://openairdocs.org/aircraft/N76515), registered now
- Make and model: Boeing 737-800
- Registry model: [Boeing 737-800](https://openairdocs.org/model/boeing-737-800) (OpenAirDocs)
- Aircraft serial: 31623
- Aircraft time: 43,707 hours, 15,195 cycles
- System (JASC): [7321 · Fuel Control/Turbine Engines](https://openairdocs.org/jasc/7321)
- Part: Hmu
- Part number: 442653
- Part serial: BECW6080
- Condition: Failed
- Location: #1 Eng
- Stage of operation: CR
- How discovered: O
- Nature of condition: Y
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2022032300764

## Discrepancy

NO 1 ENG FAILED AT 340. ATTEMPT RESTART. NOEGT NO RESTART SECTION. REPLACED GASKET REF AMM 73-21-10. RAN ENGINE NO LEAKS NOTED, BUT FUEL WAS SEEPING FROM HMU SIDE CASE COVER. REQUIRES HMU REPLACMENT. ADDED PICTURES. T/S FOUND MSG 73-21551. PERFORMED EEC BITE TEST, TEST PASSED. PERFORMED WET MOTOR REF AMM 71-00-00-700-822-F00. OBSERVED FUEL POURING FROM TOP OF HMU OUTLET TUBE TO FUEL FLOW TRANSMITTER INLET. DISASSEMBLED LINE AND FOUND GASKET SEAL MISSING A R&R #1 ENGINE HMU REF AMM 73-21-10. CARRIED OUT ALL TEST REQUIRED. ALL TEST PASSED. NO LEAKS NOTED. CLOSED AND SECURED COWLS. ROTABLE PARTS CHANGE WAS INDICATED - TT # 1811125  SN OFF 6080 PERFORMED REQUIRED IDT INSPECTION FOR HMU INSTALLATION ON ENG 1. VERIFIED ALL OPS CHECKS AND LEAK CHECKS. REF AMM 73-21-10. UNIT, HYDROMECH  OFF 29-7321-9-0012 6080 ON 29-7321-9-0012 0493

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