# SDR ASAA2019020228020

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 2, 2019
- Submitted: February 4, 2019
- Operation: Air carrier
- Aircraft: [N471AS](https://openairdocs.org/aircraft/N471AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 41703
- Aircraft time: 17,345 hours, 5,686 cycles
- System (JASC): [4920 · APU Core Engine](https://openairdocs.org/jasc/4920)
- Part: Apu
- Part number: 38403103
- Part serial: 1415610108664
- Condition: Oil Consumption
- Location: Apu Bay
- Part time: 4,455 hours, 8,662 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/ASAA2019020228020

## Discrepancy

APU HAS A HISTORY OF OIL SERVICING CURRENT OIL CONSUMPTION IS HIGHER THAN EXPECTED. GROUNDED - YES. ACCOMPLISHED AMM 49-11-00-400-803 STEPS 7G(2)-(4). GENERATED DISCREPANCY ON MIG-2C 40-0016543 ITEM 3. INSP NR 7. COMPLETED APU INST REF MM 49-11-00-400-803 STEPS 7G(5)-7.O.(1).

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.