# SDR UIEA2020031300440

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 12, 2020
- Submitted: March 17, 2020
- Operation: Air carrier
- Aircraft: [N640GT](https://openairdocs.org/aircraft/N640GT), registered now
- Make and model: Boeing 767-3S1
- Registry model: [Boeing 767-3S1](https://openairdocs.org/model/boeing-767-3s1) (OpenAirDocs)
- Aircraft serial: 25221
- Aircraft time: 90,557 hours, 19,286 cycles
- System (JASC): [2424 · AC Regulator](https://openairdocs.org/jasc/2424)
- Part: Gcu
- Part number: 3436
- Part serial: 734284F
- Condition: Malfunctioned
- Location: Apu
- Stage of operation: NR
- 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/UIEA2020031300440

## Discrepancy

APU GENERATOR DROPPED OFF LINE, APU RUNS OK (ELECTRIC INOP), BPCU FAULTS GEN TRIP AND GEN.(<P>DEFERRED APU GENERATOR INOP AS PER MEL 24-00-02B, CAT 'B': MDDR 125698.</P><P>LP <SPAN>1045963: </SPAN><SPAN>REMOVED AND REPLACED APU GENERATOR IAW B767 AMM REF 24-21-01-00-501 (OFF PART: PN </SPAN><SPAN>1080</SPAN><SPAN>, SN </SPAN><SPAN>7278102</SPAN><SPAN>). TESTS GOOD. REMOVED AND REPLACED APU GENERATOR CONTROL IAW B767 AMM 24-22-02. OPS CHK GOOD. CLOSED DMI 125698, PLACARDS REMOVED.</SPAN></P>)

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