# SDR ASAA2021111336583

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 13, 2021
- Submitted: November 16, 2021
- Operation: Air carrier
- Aircraft: [N428AS](https://openairdocs.org/aircraft/N428AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 36353
- Aircraft time: 20,836 hours, 6,601 cycles
- System (JASC): [2410 · Alternator-Generator Drive](https://openairdocs.org/jasc/2410)
- Part: Cooler
- Part number: UA5385513
- Part serial: 13661
- Condition: Leaking
- Location: #1 Engine
- Part time: 20,836 hours, 6,601 cycles
- Stage of operation: IN
- How discovered: O
- Nature of condition: K
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2021111336583

## Discrepancy

FOUND OIL LEAKING FROM #1 ENGINE IDG AIR/OIL COOLER. GROUNDED - YES. REMOVED AND REPLACED #1 ENGINE IDG AIR/OIL COOLER IAW B737-900 AMM 24-11-21-00-801/400-801. PERFORMED LEAK CHECK OF #1 ENGINE IDG AIR/OIL COOLER PER AMM 24-11-21. NO LEAKES NOTED.

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