Service difficulty report · Battery Pack · Boeing 737924

Difficulty date
December 4, 2025
Submitted
December 5, 2025
Operation
Air carrier
Aircraft
N71411
Make and model
Boeing 737924
Aircraft serial
30128
Aircraft time
64,830 hours, 26,916 cycles
Part
Battery Pack
Part number
ADD71701100
Part serial
202520
Condition
Inoperative
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

FIRST CLASS EEPL LIGHTING AND R1 DOOR EMERGENCY LIGHTING INOP. SUPPORT TASK NSA EMX N/R 00159. REMOVED FWD ENTRY PANEL IAW AMM 25-21-71-000-807 SUBTASK 25-21-71-010-010. REMOVED BATTERY PACK AT BATTERY SUPPLY UNIT M1674 IAW AMM 33-51-06. INSTALLED SERVICEABLE BATTERY PACK AT BATTERY SUPPLY UNIT N1674 IAW AMM 33-51- 06. PERFORMED OPS TEST OF NEW SERVICEABLE BATTERY PACK IAW AMM 33-51-06 SUBTASK 33-51-06-710-004. TEST PASSED. RE-INSTALLED FWD ENTRY PANEL IAW AMM 25-21-71 SUBTASK 25-21-71-410-009. REMOVED FWD ENTRY PANEL IAW AMM 25-21-71-000-807, SUBTASK 25-21-71-010-010. REMOVED BATTERY PACK AT BATTERY SUPPLY UNIT M1674 IAW AMM 33-51- 06. INSTALLED SERVICEABLE BATTERY PACK AT BATTERY PACK UNIT M1674 IAW AMM 33-51-06. PERFORMED OPS TEST OF NEW SERVICEABLE BATTERY PACK IAW AMM 33-51-06, SUBTASK 33-51-06-710-004. TEST PASSED. RE-INSTALLED FWD ENTRY PANEL IAW AMM 25-21-71 SUBTASK 25-21-71-410-009.