# SDR UIEA2026080700685

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 7, 2026
- Submitted: August 10, 2026
- Operation: Air carrier
- Aircraft: [N408MC](https://openairdocs.org/aircraft/N408MC), registered now
- Make and model: Boeing 747-47UF
- Registry model: [Boeing 747-47UF](https://openairdocs.org/model/boeing-747-47uf) (OpenAirDocs)
- Aircraft serial: 29261
- Aircraft time: 105,346 hours, 17,677 cycles
- Engine: Ge CF680C2B5F
- System (JASC): [7921 · Engine Oil Cooler](https://openairdocs.org/jasc/7921)
- Part: Heat Exchanger
- Part number: 1601425
- Part serial: 3044
- Condition: Faulted
- Location: Fuel/Oil Sys
- Stage of operation: CR
- How discovered: O
- Nature of condition: M, J, Y
- Precautionary procedure: E, A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA2026080700685

## Discrepancy

ENG 2 OIL TEMP EICAS MSG. FL 380 MAX OIL TEMP APPROX 194. ENG 2 SHUT DOWN.  PERFORMED FIM 79-00, FT FIG 109.  R & R FUEL/OIL HEAT EXCHANGER IAW AMM 79-21-01-404-014-J00, OPS CHECK & LEAK CHECKED GOOD. RUN ENG NR 2 AT DIFFERENT POWER SETTINGS AND OIL TEMP NORMAL PARAMETERSIAW AMM 71-00-00 & IPC 79-21-09-05.

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