Service difficulty report · Power Supply · Boeing 737990ER

Difficulty date
February 25, 2025
Submitted
March 12, 2025
Operation
Air carrier
Aircraft
N459AS
Make and model
Boeing 737990ER
Aircraft serial
36352
Aircraft time
38,181 hours, 11,907 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

EMERGENCY LIGHT BATTERY AT ROW 27 (IN THE CEILING) WILL NOT HOLD A CHARGE. GROUNDED - YES. REMOVED AND INSTALLED SERVICABLE EMERGENCY LIGHTS BATTERIES ROW 22R AND 27R IAW B737-900 AMM 33-51-06-960-805, 25-21-45-000-803-001, 25-21-45-400-801, 21-23-03-000-801, AND 21-23-03-400-802. (S/N 222892)