# SDR ASAA2022040237878

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 2, 2022
- Submitted: April 5, 2022
- Operation: Air carrier
- Aircraft: [N516AS](https://openairdocs.org/aircraft/N516AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 39044
- Aircraft time: 48,395 hours, 14,395 cycles
- System (JASC): [4920 · APU Core Engine](https://openairdocs.org/jasc/4920)
- Part: Apu
- Part number: 328007021
- Part serial: P7096
- Condition: Unknown
- Location: Apu Compartment
- Part time: 30,376 hours, 4,757 cycles
- Stage of operation: IN
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2022040237878

## Discrepancy

APU OIL CONSUMPTION INSPECTION DUE TO REPORT OF EXCESSIVE SERVICING. ETOPS SIGNIFICANT SYSTEM TASK AFFECTS APU ON DEMAND IN-FLIGHT START CAPABILITY.  GROUNDED - YES. REF ITEM 1 OF TSR B737-800 FIM TASK 49-95-00-810-801. REMOVED AND REINSTALLED PORT 1 EGT PROBE REF B737-800 AMM 49-71-21 FOR BORESCOPE INSPECTION. C/W BORESCOPE OF APU EXHAUST DUCT FOR OIL LEAKAGE. FOUND EXCESSIVE OIL AROUND GEARBOX VENT BREATHER. APU REQUIRES REPLACEMENT REF FIM 49-95 TASK 801.

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