# SDR CALA2026052216483

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 21, 2026
- Submitted: May 22, 2026
- Operation: Air carrier
- Aircraft: [N31412](https://openairdocs.org/aircraft/N31412), registered now
- Make and model: Boeing 737924
- Aircraft serial: 30129
- Aircraft time: 66,408 hours, 27,614 cycles
- System (JASC): [2421 · AC Generator-Alternator](https://openairdocs.org/jasc/2421)
- Part: Idg
- Part number: 761574B
- Part serial: 3190
- Condition: Faulted
- Location: Nr 2
- Part time: 65,699 hours, 24,490 cycles
- Stage of operation: CR
- How discovered: O
- Nature of condition: H, J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2026052216483

## Discrepancy

RIGHT SIDE ELECTICAL DRIVE FAILED WHILE IN CRUISE AT FL350 #2 ENGINE IDG DISCONNECTED IF FLT. PERFORMED BITE TEST ON #2 GCU, FOUND IDG FAULT.  R&R OF E2 IDG AND E2 GCU. REMOVED AND REPLACED GCU FOR E2. PER TOM C REQUEST. REF AMM 24-21-81. OPS CHECK NO DEFECTS NOTED AT THIS TIME.  REMOVED AND REPLACED IDG ON E2 REF AMM 24-11-11/401 OPS CHECK GOOD NO FURTHER DEFECTS NOTED AT THIS TIME.

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