SDR UIEA2018041600711

Service difficulty report · Gcu · Boeing 767306

Difficulty date: April 12, 2018
Submitted: April 16, 2018
Operation: Air carrier
Aircraft: N1409A
Make and model: Boeing 767306
Aircraft serial: 27960
Aircraft time: 88,122 hours, 16,352 cycles
System (JASC): 2421 · AC Generator-Alternator
Part: Gcu
Part number: 734284F
Part serial: 4825
Condition: Failed
Location: Right
Stage of operation: DE
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

RIGHT AC BUSS FAILED DURING DESCENT, QRH PROCEDURE RESTORED POWER WITH RT ISL ILLUMINATED. PERFORMED BITE CHECK ON THE BPCU, FOUND DP TRIPPED, MAIN BUSS, OVERLAP ZONE MESSAGE , REMOVED AND REPLACED THE RIGHT GCU, OPS CHECKED GOOD IAW AMM 24-22-02.