# SDR ASAA2018121527428

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 15, 2018
- Submitted: December 18, 2018
- Operation: Air carrier
- Aircraft: [N536AS](https://openairdocs.org/aircraft/N536AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35203
- Aircraft time: 26,926 hours, 7,783 cycles
- System (JASC): [2421 · AC Generator-Alternator](https://openairdocs.org/jasc/2421)
- Part: Oil Cooler
- Part number: UA5385513
- Part serial: 15302R
- Condition: Leaking
- Location: Nr 1 Engine
- Part time: 5,076 hours, 1,479 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/ASAA2018121527428

## Discrepancy

FOLLOW-UP TO NR 1 IDG FREQUENT SERVICING. GROUNDED - YES. FOUND EVIDENCE OF THE IDG AIR/OIL COOLER LEAKING. REPLACED THE IDG AIR/OIL COOLER REF AMM 24-11-21. LEAK CHECK GOOD. COMPLETED STEP 1 IDG STATIC LEAK CHECK NO OTHER LEAKS NOTED.

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