# SDR QXEA2026050600101

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 3, 2026
- Submitted: May 6, 2026
- Operation: Air carrier
- Aircraft: [N644QX](https://openairdocs.org/aircraft/N644QX), registered now
- Make and model: Emb ERJ 170-200 LR
- Registry model: [EMB ERJ 170-200 LR](https://openairdocs.org/model/embraer-s-a-erj-170-200-lr) (OpenAirDocs)
- Aircraft serial: 17000767
- Aircraft time: 19,496 hours, 13,805 cycles
- System (JASC): [2421 · AC Generator-Alternator](https://openairdocs.org/jasc/2421)
- Part: Idg
- Part number: 1701317A
- Part serial: 2984
- Condition: Malfunctioned
- Location: Nr 1
- Part time: 21,109 hours, 14,041 cycles
- Stage of operation: CL
- How discovered: O
- Nature of condition: J, H
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/QXEA2026050600101

## Discrepancy

FLIGHT 2351. "IDG 1 OFF BUS" EICAS MESSAGE IN FLIGHT. RAN CHECKLIST AND TURNED IDG OFF.  DIVERTED AND ACCOMPLISHED UNEVENTFUL LANDING. REMOVED FROM SERVICE. INTERROGATED CMC, FOUND FAULT CODE 24210002GU1. PERFORMED FIM 24-21-00-810-803-A AND REPLACED GCU1 IAW AMM TASK 24-21-19-000/400-801-A. OPS CHECK PASSED. PERFORMED ENGINE RUNS WITH CREW AND IDG 1 OR FAILED OPS CHECK REF AMM TASK 24-21-01-710-801-A. "IDG 1 OFF BUS" REMAINED ON EICAS PLACING IDG 1 ON MEL 24-21-0. MEL CLEARED 5/5 BY RECONNECTED IDG 1 IAW AMM 24-21-840-801-A, OPS TEST FAILED. "IDG 1 OFF BUS" REMAINS ON EICAS. REPLACED IDG 1 IAW AMM 24-21-01-000/400-801-A. PERFORMED OPS TEST OF IDG 1, OPS TEST GOOD. "IDG 1 OFF BUS" NO LONGER SHOWS ON EICAS. NFDN. PLACARDS REMOVED, MTX CONTROL NOTIFIED. THIS CLEARS MEL. RETURNED TO SERVICE.

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