# SDR A6WA202609028910

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 2, 2026
- Submitted: September 4, 2026
- Operation: Air carrier
- Aircraft: [N420AW](https://openairdocs.org/aircraft/N420AW), registered now
- Make and model: Cndair CL6002B19
- Aircraft serial: 7640
- Aircraft time: 45,496 hours, 44,294 cycles
- Engine: Ge CF343B1
- System (JASC): [7921 · Engine Oil Cooler](https://openairdocs.org/jasc/7921)
- Part: Heat Exchanger
- Part number: 6087T05F02
- Part serial: SCKB1467
- Condition: Faulted
- Location: Nr 2 Engine
- Part time: 38,951 hours, 41,148 cycles
- Stage of operation: CL
- How discovered: V
- Nature of condition: M, J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/A6WA202609028910

## Discrepancy

DURING CLIMB NR 2 ENG OIL TEMP REACHED 150'C. C/W QRH -PULLED PWR BACK AND REDUCED PWR. ENG OIL TEMP RETURNED TO NORMAL OPERATING RANGE.  NR 2 ENG OIL TEMP CONSTANTLY 20' HOTTER THAN NR 1. MC- ON GRD @ IDLE READS 10-15' HOTTER THAN NR 1.  AIRCRAFT REMOVED FROM SERVICE, REF W/O 348533 W/C  2,3,4,5 FOR REPLACEMENT OF AGB CARBON SEALS  D,F,BB AND REPLACEMENT OF FUEL OIL HEAT EXCHANGER, AND OIL CONTAMINATION RECOVERY. OPS CHECK & LEAK CHECK, AND OIL CONSUMPTION  TEST ARE SATISFACTORY.

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