# SDR ASAA2023083044856

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 30, 2023
- Submitted: August 31, 2023
- Operation: Air carrier
- Aircraft: [N536AS](https://openairdocs.org/aircraft/N536AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35203
- Aircraft time: 41,993 hours, 12,091 cycles
- System (JASC): [4990 · APU Oil System](https://openairdocs.org/jasc/4990)
- Part: Oil Cooler
- Part number: 1605642
- Part serial: 8043
- Condition: Leaking
- Location: Apu
- Part time: 7,774 hours, 12,254 cycles
- Stage of operation: IN
- How discovered: V
- Nature of condition: K
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2023083044856

## Discrepancy

WHLE PERFORMING TSR #TSR714852FOUND APU OIL COOLER LEAKING. GROUNDED - YES. REPLACED APU OIL COOLER. REF. AMM 49-91-41. INSTALLATION/LEAK CHECK GOOD. PLACARDS REMOVED. THIS CLEARS MEL 49-1B. SEAMC TODD NOTIFIED.

---
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.