# SDR MEX2004068

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 19, 2004
- Submitted: March 23, 2004
- Operation: Air carrier
- Aircraft: [N838AM](https://openairdocs.org/aircraft/N838AM), registered now
- Make and model: Doug DC-9-83
- Registry model: [Doug DC-9-83](https://openairdocs.org/model/douglas-dc-9-83) (OpenAirDocs)
- Aircraft serial: 49397
- Engine: Pwa JT8D219
- System (JASC): [2420 · AC Generation System](https://openairdocs.org/jasc/2420)
- Part: Gcu
- Part number: 947F9453
- Condition: Failed
- Location: Nr 2 Engine
- Stage of operation: TX
- How discovered: O
- Nature of condition: H
- Precautionary procedure: D
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/MEX2004068

## Discrepancy

FLT 909 - MTY-MEX - AIRCRAFT RETURNED TO PLATFORM AS A CONSEQUENCE OF RIGHT ENGINE GENERATOR FAIL.  THE APU WAS DEFERRED PREVIOUSLY SO THE GCU AND BCU WERE REPLACED BUT FAIL CHANGE TO LT ENGINE INDICATION.  APU TRIM WAS ACCOMPLISHED AND IT WAS OPERATIVE.  THE GCU WAS DEFERRED IAW MEL 24-1.  DURING TRANSIT CHECK AT CUN STATION, THE GENERATOR WAS REPLACED IAW MM 24-20-07, TEST CORRECT.  (M)

---
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.