# SDR SWAA2023021302189

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 11, 2023
- Submitted: February 13, 2023
- Operation: Air carrier
- Aircraft: [N7743B](https://openairdocs.org/aircraft/N7743B), registered now
- Make and model: Boeing 737-7BD
- Registry model: [Boeing 737-7BD](https://openairdocs.org/model/boeing-737-7bd) (OpenAirDocs)
- Aircraft serial: 36718
- Aircraft time: 47,215 hours, 24,422 cycles
- System (JASC): [7520 · Engine Cooling System](https://openairdocs.org/jasc/7520)
- Part: Valve
- Condition: Leaking
- Location: Zn 400 Nacelle/P
- Stage of operation: CL
- How discovered: 9
- Nature of condition: K
- Precautionary procedure: D
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA2023021302189

## Discrepancy

FUEL LEAK #1 ENG<[01] ACCOMPLISHED TEST 12 ACTUATORS TEST PER M/M 71-00-00. NO LEAKS NOTED. ACCOMPLISHED TEST 3A IDLE POWER LEAK CHECK PER M/M 71-00-00. NO LEAKS NOTED. BAGGED ALL #1 ENGINE FUEL DRAIN TUBES AND ACCOMPLISHED TEST 3B PART POWER LEAK CHECK PER M/M 71-00-00. NO LEAKS NOTED. REFERENCE LOG PAGE 1728315 FOR TROUBLESHOOTING CORRECTIVE ACTION. [01] REPLACED HPTACC VALVE PER M/M 75-21-01. OPS CHECKS OK;[02] REPLACED #1 ENGINE HPTACC VALVE PER M/M 75-21-01. OPS CHECKS OK.

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