Service difficulty report · Battery Pack · Bombdr BD7001A11

Difficulty date
January 30, 2026
Submitted
February 2, 2026
Operation
Air carrier
Aircraft
N128QS
Make and model
Bombdr BD7001A11
Aircraft serial
60113
Aircraft time
1,601 hours, 752 cycles
Part
Battery Pack
Part number
8ES40980000
Part serial
5272772
Condition
Defective
Location
Zone 200
Stage of operation
IN
How discovered
C
Nature of condition
L
Precautionary procedure
K

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

What was found

WHEN PLANE IS POWERED IN EMERGENCY LIGHTS ARE ON THE ARM OR OFF POSITION. ALL EMERGED LIGHTS ARE OFF AS EXPECTED. WHEN THE AP IS SHUTDOWN THE FWD EMERGENCY LIGHTS ARE RECEIVING POWER & ON. THIS INCLUDES THE EXTERIOR EMERGENCY LIGHTS TO RT OF CABIN DOOR AS WELL. ALL OTHER EMERGENCY LIGHTS ARE OUT AS THEY SHOULD BE. INSPECTED WIRING FOR LOOSE GROUNDS AND CONNECTIONS, NO DEFECTS NOTED. REFER TO GL5500 DWG7003355007 REV E. R & R ELPS 1 IAW AMM 33-51-09. PERFORMED POST OP CHECKS AND FUNCTIONAL TEST OF THE EMERGENCY LIGHTS POWER SUPPLIES IAW AMM 33-51-09-720-801. SYS TESTS & FUNCTIONS WELL. RESTORED AIRCRAFT TO ORIGINAL CONFIGURATION. NO FURTHER DEFECTS NOTED.