SDR UIEA2020100132138

Service difficulty report · Buss · Boeing 767306

Difficulty date: September 28, 2020
Submitted: October 1, 2020
Operation: Air carrier
Aircraft: N1409A
Make and model: Boeing 767306
Aircraft serial: 27960
Aircraft time: 93,428 hours, 18,226 cycles
System (JASC): 2420 · AC Generation System
Part: Buss
Condition: Malfunctioned
Stage of operation: AP
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

PASSING 18,000 AND AFTER SELECTING LANDING LIGHTS RECEIVED "RT AC BUS "OFF" EICAS. AFTER QRH, WE COULD NOT RESTORE RT AC BUS AND ACCEPTED LANDING CLEARANCE DUE TO LAND AT NEAREST SUITABLE AIRCRAFT CONFIGURED WITHOUT PROBLEM AND LANDING ROLLOUT AND TAXI UNEVENTFUL. RAN ENGINES TO TRY TO DUPLICATE THIS ISSUE. DURING ENGINE RUN, NO FAULTS WERE FOUND. PER FAULT TREE 24-20-801, WE DID A BITE TEST ON THE BPCU, NO FAULTS WERE FOUND. A/C SYSTEM IS OPERATING NORMALLY.