# SDR ASAA2022051938418

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 19, 2022
- Submitted: May 24, 2022
- Operation: Air carrier
- Aircraft: [N588AS](https://openairdocs.org/aircraft/N588AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35685
- Aircraft time: 51,394 hours, 15,250 cycles
- System (JASC): [4910 · APU Cowling/Containment](https://openairdocs.org/jasc/4910)
- Part: Switch
- Part number: 2EN19RB
- Condition: Inoperative
- Location: Apu
- Stage of operation: NR
- How discovered: V
- Nature of condition: J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2022051938418

## Discrepancy

APU START FAULT. GROUNDED - YES. FOUND APU FAULT FOR INLET DOOR SHUTDOWN 49-15004. OPS TESTED THE AIR INLET DOOR POSITION SWITCH. FOUND INOP. REMOVED POSITION SWITCH REF B737-800 AMM 49-15-41-000-801. AFTER REMOVAL, FOUND BOTH PUSHRODS ON THE APU AIR INLET DOOR SHEARED AND SEIZED ON THE PUSHROD BEARINGS. REPLACED APU INLET DOOR AND PUSHRODS PER AMM 49-15-22. REPLACED INLET DOOR POSITION SWITCH PER AMM 49-15-44. ADJUSTMENTS AND OPS CHECK GOOD.

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