Service difficulty report · Charger · Boeing 7377H4

Difficulty date
January 31, 2024
Submitted
February 8, 2024
Operation
Air carrier
Aircraft
N452WN
Make and model
Boeing 7377H4
Aircraft serial
29846
Aircraft time
65,652 hours, 39,325 cycles
Part
Charger
Part number
UNKNOWN
Condition
Inoperative
Location
Emergency Lights
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

MULTIPLE EMERGENCY LIGHTS IN PAX CABIN INOP<[01] REMOVED AND REPLACED EMERGENCY BATTERY PACKS AT POSITIONS M1672; M1674 AND M1675 AS PER REF B-737; AMM 33-51-06-960-805. OPERATIONAL TEST FOUND NORMAL.;[02] VERIFIED STEP 1.;[03] PERFORMED CONTINUITY CHECKS BETWEEN BATTERY PACK M1670 CONNECTOR D10716 PINS 3;4 BATTERY PACK M1673 CONNECTOR D10746 PINS 3;4 BATTERY PACK M1668 CONNECTOR D10712 PINS 3;4 UP TO DISCONNECT BRACKET AB0340A CONNECTOR D40196J PINS 1;2 FOUND NORMAL PER WDM 33-51-11 SHEET 2 FURTHER T/S REQUIRED;[04] CORRECTION TO STEP 3<BR>PERFORMED CONTINUITY CHECKS BETWEEN BATTERY PACK M1670 CONNECTOR D10716 PINS 3;4 BATTERY PACK M1673 CONNECTOR D10746 PINS 3;4 BATTERY PACK M1668 CONNECTOR D10712 PINS 3;4 UP TO DISCONNECT BRACKET AB0340A CONNECTOR D40196J PINS 1;2 FOUND NORMAL PER WDM 33-51-11 SHEET 2 FURTHER T/S REQUIRED<BR>TOOL: MULTIMETER<BR>B/C 176391<BR>CAL DUE 13 OCT 24;[05] VERIFIED STEP 4.;[06] REMOVED AND REPLACED EMERGENCY LIGHT BATTERY PACK M1674/M1675 & BATTERY POWER SUPPLY M1670 & M1675 I/A/W BOEING AMM 33-51-06-960-805 & 33-51-06-960-806. OPERATIONAL TEST PERFORMED I/A/W BOEING AMM 33-51-00-710-801; OPS CHECK NORMAL;[07] VERIFIED STEP 6

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