# SDR UIEA2019020653123

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 5, 2019
- Submitted: February 6, 2019
- Operation: Air carrier
- Aircraft: [N1487A](https://openairdocs.org/aircraft/N1487A), registered now
- Make and model: Boeing 767-31K
- Registry model: [Boeing 767-31K](https://openairdocs.org/model/boeing-767-31k) (OpenAirDocs)
- Aircraft serial: 28865
- Aircraft time: 84,433 hours, 16,954 cycles
- System (JASC): [2421 · AC Generator-Alternator](https://openairdocs.org/jasc/2421)
- Part: Gcu
- Part number: 734284F
- Part serial: 5978
- Condition: Inoperative
- Location: Apu Generator
- Stage of operation: IN
- How discovered: O
- Nature of condition: J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA2019020653123

## Discrepancy

APU GEN INOP. FREQ LOW, AIR OK(<P>TRANSFERRED TO MDDR # 106940 AS PER MEL 49-11-01A CAT C </P><P>LP 1053779-3 (RIV) - PFMD BPCU BITE IAW FIM 24-20 FT 801 FOUND APU  GENERATOR CONTROL UNIT FAULTING. REMOVED AND REPLACED APU GCU IAW AMM 24-22-02 OPS CHECK GOOD NO FURTHER DEFECT NOTED. MCC ADVISED - PLACARDS REMOVED.</P><P>NOTE: NO NEED FOR APU COLD SOAK START VERIFICATION DUE FAULT ONLY INVOLVING APU GENERATION (NOT STARTING CIRCUIT) </P><P><BR /></P>)

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