# SDR ARWA20020109

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 8, 2002
- Submitted: January 21, 2002
- Operation: Air carrier
- Aircraft: [N29UA](https://openairdocs.org/aircraft/N29UA), registered now
- Make and model: Doug DC-8-61
- Registry model: [Doug DC-8-61](https://openairdocs.org/model/douglas-dc-8-61) (OpenAirDocs)
- Aircraft serial: 46159
- Aircraft time: 51,747 hours, 27,047 cycles
- System (JASC): [2424 · AC Regulator](https://openairdocs.org/jasc/2424)
- Part: Gcu
- Part number: 51508000
- Part serial: 1033AC
- Condition: Failed
- Location: Nr 4  Engine
- Stage of operation: AP
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ARWA20020109

## Discrepancy

DURING APPROACH NR 4 GENERATOR UNPARALLEL LIGHT AND BUS POWER FAIL LIGHT ILLUMINATED.  PERFORMED ABNORMAL CHECKLIST.  AIRCRAFT LANDED AT DESTINATION UNEVENTFUL.  RESET NR 4 GENERATOR SYSTEM IN ACCORDANCE WITH MM 24-5-1 ENTERED ON DMI 16156 PER MEL 24-1 GEN NR 4 INOP.  REMOVED AND REPLACED GENERATOR CONTROL UNIT IAW MM 24-20-1, OPS CHECK NORMAL.  DMI CLEARED ON LOG PAGE 107253.

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