# SDR ASAA2020081753030

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 15, 2020
- Submitted: August 17, 2020
- Operation: Air carrier
- Aircraft: [N569AS](https://openairdocs.org/aircraft/N569AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35184
- Aircraft time: 49,735 hours, 15,043 cycles
- Engine: Cfmint CFM567B27
- System (JASC): [7920 · Engine Oil Distribution (Airframe Furnished)](https://openairdocs.org/jasc/7920)
- Part: Heat Exchanger
- Part number: 453328039
- Part serial: YY083785
- Condition: Broken
- Location: Nr 2 Engine Oil
- Part time: 41,446 hours, 12,992 cycles
- 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/ASAA2020081753030

## Discrepancy

OIL FUEL HEAT EXCHANGER ON NR 2 ENGINE HELICOILS BROKEN FUEL IN.  GROUNDED - YES.  REMOVED NR 2 ENGINE MAIN OIL/FUEL HEAT EXCHANGER, REF B737-800 AMM 79-21-02-000-801-F00.  INSTALLED SERVICEABLE MAIN OIL/FUEL HEAT EXCHANGER, REF BOEING B737-800 AMM 79-21-02-400-F00.  ACCOMPLISHED TEST 3A, REF B737-800 AMM 71-00-00-800-811-F00.  NO LEAKS NOTED.

---
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.