Service difficulty report · Power Supply · Boeing 737990ER

Difficulty date
June 9, 2025
Submitted
June 13, 2025
Operation
Air carrier
Aircraft
N272AK
Make and model
Boeing 737990ER
Aircraft serial
44112
Aircraft time
29,142 hours, 9,368 cycles
Part
Power Supply
Part number
ADD71701100
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

MULTIPLE CABIN EMERGENCY LIGHTS OUT. GROUNDED - YES. REMOVED AND INSTALLED SERVICEABLE EMERGENCY LIGHTS BATTERY PACKS, OPS CHECKS GOOD IAW B737-900 AMM 33-51-06-960-805. (S/N 432911, 432159, 433259, 434064, 432882, 433260, 434159)