Service difficulty report · Control Unit · Bombdr BD1001A10

Difficulty date
April 23, 2023
Submitted
April 27, 2023
Operation
Air carrier
Aircraft
N3085J
Make and model
Bombdr BD1001A10
Aircraft serial
55104
Aircraft time
5,557 hours, 2,112 cycles
Part
Control Unit
Part number
1714672L
Part serial
AAK8000498
Condition
Failed
Location
Lh
Part time
5,546 hours, 2,106 cycles
Stage of operation
CR
How discovered
V
Nature of condition
H
Precautionary procedure
A

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

What was found

FLT # 2112, BOS-AUS. EMERGENCY DECLARED. AT CRZ (FL 340) LOSS A/C BUS #2, D/C BUS #2 BATTERY #2, DCBUS#. INCLUDING 2 PAGES ON EICAS; FOUND BTC (2) 3PST 350A IN EPC #2 TO HAVE TERMINAL SCREWS LOOSE ON R/H SIDE AND APPEARANCE OF EXCESSIVE HEAT ON TERMINALS WITH LOOSE SCREWS R/R BTC (2) PST 350A IN EPC 2 IAW AMP 24-02-04. NO DAMAGE / DISCOLORATION NOTED ON A/C MOUNTING LUGS. REF L/P 3699491 ITEM 2 AND L/P 3699492 ITEM 1 FOR ADDITIONAL T/S OPS CHK OK. A/C OK FOR SVC. R/R BPCU2 AS PRECAUTIONARY IAW AMP 24-02-01 OPS CHK OK.R/R TRU 2 IN EPC 2 IAW AMP 24-31-01 AS PRECAUTIONARY, OPS CHK OK.