Service difficulty report · Battery · Emb EMB505

Difficulty date
December 19, 2025
Submitted
December 24, 2025
Operation
Air carrier
Aircraft
N303QS
Make and model
Emb EMB505
Aircraft serial
50500141
Aircraft time
10,359 hours, 8,124 cycles
Part
Battery
Part number
7450LS00
Part serial
005502
Condition
Inoperative
Location
Zone 200
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

CABIN EMERGENCY LIGHTS ARE ILLUMINATED WITH THE AIRCRAFT BATTERIES ON AND THE EMER LIGHT SWITCH IN THE ARMED POSITION. EMER LT NOT ARM CAS MESSAGE STAYS ILLUMINATED WITH SWITCH IN THE ARMED POSITION. DUE TO CABIN EMERGENCY LIGHTS ARE ILLUMINATED WITH THE ACFT BATTERIES ON AND THE EMER LIGHT SWITCH IN THE ARMED POSITION. REMOVED FAULTY NR 1 EMERGENCY BATTERY AND INSTALLED CUTOMER SUPPLIED REPAIRED BATTERY REMOVED FAULTY NR 2 EMERGENCY BATTERY & INSTALLED CUSTOMER SUPPLIED REPAIRED EMERGENCY BATTERY. RETURNED ACFT BACK TO ORIGNAL CONFIGURATION. OPS CHECKED GOOD, NO DEFECTS. ALL WORK DONE IAW AMM 33-52-01

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