# SDR ASAA2018030923790

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 9, 2018
- Submitted: March 9, 2018
- Operation: Air carrier
- Aircraft: [N403AS](https://openairdocs.org/aircraft/N403AS), registered now
- Make and model: Boeing 737-900ER
- Registry model: [Boeing 737-900ER](https://openairdocs.org/model/boeing-737-900er) (OpenAirDocs)
- Aircraft serial: 41730
- Aircraft time: 21,469 hours, 7,064 cycles
- System (JASC): [2421 · AC Generator-Alternator](https://openairdocs.org/jasc/2421)
- Part: Oil Cooler
- Part number: UA5385513
- Part serial: 9813
- Condition: Leaking
- Location: Nr 1 Idg
- Part time: 21,469 hours, 7,064 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/ASAA2018030923790

## Discrepancy

NR 1 IDG REQUIRES FREQUENT SERVICING.  ACFT GROUNDED.  ACCOMPLISHED A NR 1 IDG STATIC LEAK CHECK IAW AMM 24-11-00. FOUND EVIDENCE OF A LEAK AT THE IDG AIR/OIL COOLER. REPLACED THE IDG AIR/OIL COOLER IAW AMM 24-11-21. LEAK CHECKED GOOD.

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