# SDR ASAA1158909

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 29, 2011
- Submitted: February 1, 2011
- Operation: Air carrier
- Aircraft: [N519AS](https://openairdocs.org/aircraft/N519AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 36482
- Aircraft time: 7,405 hours, 2,204 cycles
- System (JASC): [2421 · AC Generator-Alternator](https://openairdocs.org/jasc/2421)
- Part: Idg
- Part number: 761574B
- Part serial: AAAH006134
- Condition: Defective
- Location: Nr 2 Engine
- Part time: 7,408 hours, 2,200 cycles
- Stage of operation: TX
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA1158909

## Discrepancy

NR 2 DRIVE LIGHT OFF ON PREFLIGHT INSPECTION.  DETERMINED THAT THE INTERNAL PRESSURE SW OF NR 2 IDG IS DEFFECTIVE REF WDM 24 11 21.  REMOVED AND REPLACED NR 2 IDG REF MM 24 11 11.  OP CHECK GOOD.

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