# SDR ASAA2021061935145

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 19, 2021
- Submitted: June 30, 2021
- Operation: Air carrier
- Aircraft: [N532AS](https://openairdocs.org/aircraft/N532AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 36346
- Aircraft time: 39,976 hours, 11,831 cycles
- System (JASC): [4930 · APU Engine Fuel and Control](https://openairdocs.org/jasc/4930)
- Part: Manifold
- Part number: 38838362
- Condition: Leaking
- Location: Apu Fuel
- Stage of operation: NR
- How discovered: O
- Nature of condition: K
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2021061935145

## Discrepancy

APU DRAIN MAST OBSERVED LEAKING FUEL- APU SECURED -A/C SHUTDOWN LEAK STOPPED. GROUNDED - YES. PERFORMED START UP OF APU AND FOUND PRIMARY FUEL MANIFOLD B-NUT ON THE FUEL NOZZLE AT THE 5 O'CLOCK POSITION LEAKING SIGNIFICANTLY. FOUND B-NUT TO BE SECURE. RE-SECURED ELECTRICAL CONNECTOR TO IGNITION UNIT, REF B737-800 AMM 49-41-31. REMOVED AND REPLACED APU PRIMARY FUEL MANIFOLD ASSY REF AMM 49-31-16-000-801 & 49-31-16-400-801. OPS AND LEAK CHECK GOOD.

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