# SDR ASAA2013021493911

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 14, 2013
- Submitted: February 19, 2013
- Operation: Air carrier
- Aircraft: [N506AS](https://openairdocs.org/aircraft/N506AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35690
- Aircraft time: 17,973 hours, 5,674 cycles
- System (JASC): [2421 · AC Generator-Alternator](https://openairdocs.org/jasc/2421)
- Part: Idg
- Part number: 761574B
- Part serial: 1006
- Condition: Failed
- Location: Nr 1
- Part time: 44,749 hours, 16,954 cycles
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2013021493911

## Discrepancy

CLIMBING OUT, AROUND 12,500 HAD THE MASTER CAUTION ILLUMINATE DUE TO NR 1 ENGINE SOURCE OFF LIGHT.   THE DRIVE LIGHT ALSO ILLUMINATED AND COMPLETED THE CHECKLIST WHICH INCLUDED DISCONNECTING THE GENERATOR DRIVE.  RETURNED TO DEPARTURE.  R & R NR 1 IDG REF MM 24-11-11-000-801 AND MM 24-11-11-400-801.  PERFORMED TEST 3A IDLE POWER LEAK CHECK REF TASK 71-00-00-700-801-F00, NO LEAKS NOTED.  PERFORMED OPS TEST FOR NR 1 IDG TASK 24-11-00-700-802.  ALL INDICATIONS NORMAL.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.