SDR UIEA2018040700625

Service difficulty report · Bpcu · Boeing 767306

Difficulty date: April 6, 2018
Submitted: April 9, 2018
Operation: Air carrier
Aircraft: N1409A
Make and model: Boeing 767306
Aircraft serial: 27960
Aircraft time: 88,082 hours, 16,332 cycles
System (JASC): 2440 · External Power System
Part: Bpcu
Part number: 734285E
Part serial: 0633
Condition: Failed
Location: Ac System
Stage of operation: DE
How discovered: 9
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 FAIL INDICATED , RECYCLING RT GENERATOR RESTORED POWER TO RIGHT AC BUSS , RESSETING RT BUSS ISOLATION SWITCH UNSUCCESFUL , OCCURED DESCENDING THROUGH 18000 FT. PERFORMED AN OPS CHECK OF BPCU, OPS CHECK FAILED, REMOVED AND REPLACED BPCU IAW AMM 24-41-03. ALSO SERVICED THE RT IDG IAW AMM 12-13-03, OPS CHECKED GOOD.