# SDR CALA2026041515384

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 14, 2026
- Submitted: April 15, 2026
- Operation: Air carrier
- Aircraft: [N77530](https://openairdocs.org/aircraft/N77530), registered now
- Make and model: Boeing 737824
- Aircraft serial: 39998
- Aircraft time: 46,182 hours, 16,942 cycles
- Engine: Ge CFM567B24
- Engine time: 2,520 hours, 1,175 cycles
- System (JASC): [2421 · AC Generator-Alternator](https://openairdocs.org/jasc/2421)
- Part: Idg
- Part number: 761574B
- Part serial: 0731
- Condition: Inoperative
- Location: Nr 1 Engine
- Part time: 76,429 hours, 27,681 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/CALA2026041515384

## Discrepancy

ENG 1 SOURCE OFF LIGHT ILLUMINATED ENG 1 IDG FAULT LIGHT ON GENERATOR CONTROL UNIT. REPLACED ENG 1 IDG REF AMM 24-11-11. OPS CHECK, LOAD TEST, LEAK TEST AND DISCONNECT TEST SUCCESSFUL REF AMM 24-11-00.   ACCOMPLISHED ALL REQUIRED IDT INSPECTION FOR E-1 IDG REMOVE AND REPLACE. REF GMM 09-10-05 & AMM 24-11-00

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