Service difficulty report · Power Supply · Boeing 74747UF

Difficulty date
January 14, 2018
Submitted
March 16, 2018
Operation
Air carrier
Aircraft
N408MC
Make and model
Boeing 74747UF
Aircraft serial
29261
Aircraft time
75,184 hours, 12,577 cycles
Part
Power Supply
Part number
13PST3
Part serial
49196
Condition
Inoperative
Location
Emergency Lights
Stage of operation
IN
How discovered
V
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

FOUND THE POWER SUPPLY FOR THE EMERGENCY LIGHTS M5168, CAPACITY FUNCTION NOT GOOD IAW AMM 33-51-04-002-009-001 & 33-51-04-402-012-001 REV 91. REPLACED EMERGENCY LIGHT POWER SUPPLY M5168 AND CONDITION CHECKED NORMAL. IAW AMM 33-51-021-202-012-001 REV 91. PERFORMED POWER SUPPLY TEST AND THE RESULT WAS SATISFACTORY.

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