# SDR GR4D20191023001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 23, 2019
- Submitted: October 23, 2019
- Operation: Air carrier
- Filed by: [Gulfstream Services Corporation, repair station GR4D216M](https://openairdocs.org/faa-repair-station/GR4D216M/gulfstream-services-corporation.md) (OpenAirDocs)
- Aircraft: [N529QS](https://openairdocs.org/aircraft/N529QS), registered now
- Make and model: Gulstm GVSPG550
- Aircraft serial: 5156
- Aircraft time: 11,899 hours, 4,406 cycles
- System (JASC): [4920 · APU Core Engine](https://openairdocs.org/jasc/4920)
- Part: Housing
- Part number: WB38106672
- Condition: Corroded
- Location: Apu Inlet
- Part time: 8,642 hours
- Component: Apu, Hnywl, RE220
- Component part number: WE38007001
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/GR4D20191023001

## Discrepancy

APU SEIZING DUE TO COMPRESSOR SHROUD CORROSION. INLET HOUSING HAD TO BE CHANGED

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