Service difficulty report · Battery Pack · Boeing 7377H4

Difficulty date
June 4, 2021
Submitted
July 15, 2021
Operation
Air carrier
Aircraft
N489WN
Make and model
Boeing 7377H4
Aircraft serial
33855
Aircraft time
54,253 hours, 32,244 cycles
Part
Battery Pack
Condition
Failed
Location
Cabin
Stage of operation
IN
How discovered
9
Nature of condition
O
Precautionary procedure
K

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

What was found

M1672 BATTERY FAILS EMERGENCY BATTERY CAPACITY CHECK. ; M1672 FAILS EMERGENCY BATTERY CAPACITY CHECK. / [01] REMOVED AND REPLACED M1672 BATTERY PACK PER AMM 33-51-06-960-805 STEPS 4. D. (1)-(4); [02] VERIFIED INSTALLATION OF EMERGENCY BATTERY PACK PER AMM 33-51-06-960-805 STEPS 4. D. (1)-(4); [03] PERFORMED GOOD INSTALLATION TEST OF EMERGENCY LIGHTING BATTERY PACK M1672 PER AMM 33-51-06-960-805 4. D. (5); [04] VERIFIED GOOD INSTALLATION TEST OF EMERGENCY LIGHTING BATTERY PACK M1672 PER AMM 33-51-06-960-805 4. D. (5)

More about the Boeing 737-7H4