Service difficulty report · Gcu · Boeing 7673S1

Difficulty date
March 12, 2020
Submitted
March 17, 2020
Operation
Air carrier
Aircraft
N640GT
Make and model
Boeing 7673S1
Aircraft serial
25221
Aircraft time
90,557 hours, 19,286 cycles
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

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

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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