# SDR ASAA2018071625400

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 4, 2018
- Submitted: July 17, 2018
- Operation: Air carrier
- Aircraft: [N407AS](https://openairdocs.org/aircraft/N407AS), registered now
- Make and model: Boeing 737-900ER
- Registry model: [Boeing 737-900ER](https://openairdocs.org/model/boeing-737-900er) (OpenAirDocs)
- Aircraft serial: 41731
- Aircraft time: 22,259 hours, 7,210 cycles
- System (JASC): [2421 · AC Generator-Alternator](https://openairdocs.org/jasc/2421)
- Part: Oil Cooler
- Part number: UA5385513
- Part serial: 9911
- Condition: Leaking
- Location: Nr 1 Idg
- Part time: 22,354 hours, 7,240 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/ASAA2018071625400

## Discrepancy

FOLLOW-UP TO NR 1 IDG FREQUENT SERVICING GROUNDED - YES. ACCOMPLISHED STATIC IDG LEAK CHECK REF AMM 24-11-00, NO DEFECTS NOTED.  ACCOMPLISHED ENGINE IDLE LEAK CHECK REF AMM 2411-00, FOUND LEAK AT AIR/OIL COOLER. REPLACED NR 1 ENGINE IDG AIR/OIL COOLER REF AMM 24-11-21, LEAK CHECK GOOD. NO OTHER EXTERNAL LEAKS NOTED.

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