Service difficulty report · Battery Pack · Boeing 7377H4

Difficulty date
May 19, 2022
Submitted
May 23, 2022
Operation
Air carrier
Aircraft
N474WN
Make and model
Boeing 7377H4
Aircraft serial
33861
Aircraft time
59,626 hours, 35,442 cycles
Part
Battery Pack
Part number
M1673
Condition
Failed
Location
Pax 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

DONT PASS OPERATIONAL TEST EMERGENCY LIGHTS SYSTEM AT PASSENGER CABIN 2022-259514 / [01] REPLACED EMERGENCY EXIT LIGHT BATTERY PACKS (M1670 AND M1673) COVERED ON TTG8Q00CJXHM AND TTG8Q00CJY9E TEST IS OK IAW AMM 33-51-06-960-806.;[02] CORRECTED STEP 1.<BR>REPLACED EMERGENCY EXIT LIGHT BATTERY PACKS (M1670 AND M1673) AND PERFORMED OPERATIONAL TEST EMERGENCY LIGHT SYSTEM AND TEST IS OK IAW AMM 33-51-06-960-806. THE INSTALLATION IS DOCUMENTED ON TTG8Q00CJXHM AND TTG8Q00CJY9E.;[03] REPLACED EMERGENCY EXIT LIGHT BATTERY PACKS (M1670 AND M1673) AND PERFORMED OPERATIONAL TEST EMERGENCY LIGHT SYSTEM AND TEST IS OK IAW AMM 33-51-06-960-806. THE INSTALLATION IS DOCUMENTED ON TTG8Q00CJXHM AND TTG8Q00CJY9E.

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