Service difficulty report · Battery Pack · Boeing 73776N

Difficulty date
November 12, 2024
Submitted
November 18, 2024
Operation
Air carrier
Aircraft
N7723E
Make and model
Boeing 73776N
Aircraft serial
32670
Aircraft time
58,114 hours, 30,194 cycles
Part
Battery Pack
Condition
Inoperative
Location
Zn 200 Fus Top
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

L2 EMERGENCY LIGHT INOP.<[01] RELAMPED; REF. AMM 33-51-04. NO FIX. SWAPPED POWER SUPPLIES M1672 AND M1673; REF. AMM 33-51-06. NO FIX. SWAPPED BACK TO ORIGINAL. CHECK CONTINUITY FROM D10746 TO GND; REF. WDM 33-51-14-6. GOOD CONTINUITY. REQUIRES MORE T/S; SHORT-TO-GROUND MOST LIKELY.;[02] RE-INSTALLED L2 EMERGENCY LIGHT REF AMM 33-51-04. OPS CHECKS GOOD.

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