SDR UIEA2018040900642

Service difficulty report · Gcu · Boeing 767306

Difficulty date: April 9, 2018
Submitted: April 9, 2018
Operation: Air carrier
Aircraft: N1409A
Make and model: Boeing 767306
Aircraft serial: 27960
Aircraft time: 88,093 hours, 16,337 cycles
System (JASC): 2421 · AC Generator-Alternator
Part: Gcu
Part number: 734284F
Part serial: 4558
Condition: Malfunctioned
Location: Nr 2
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

DURING DESCENT, WHEN TURNING LANDING LIGHTS ON, THE RT AC BUSS OFF EICAS ILLUMINATED. RT GENERATOR CONTROL, RT BUSS TIE, QRH COMLETED. RESET THE RT GENERATOR CONTROL AND RT BUSS TIE PREVIOUS FLT HAD SAME RESULT. ISOLATION AND BOTH UTILITY BUSS SHED. REMOVED AND REPLACED THE NR 2 GCU, OPS CHECKED GOOD IAW AMM 24-22-02.