Service difficulty report · Battery · Gulstm GVSPG550

Difficulty date
April 23, 2026
Submitted
April 23, 2026
Operation
General aviation
Aircraft
N521SB
Make and model
Gulstm GVSPG550
Aircraft serial
5199
Aircraft time
7,355 hours, 1,970 cycles
Part
Battery
Part number
023805000
Part serial
090520011C367
Condition
Thermal Runaway
Location
Zone 100
Stage of operation
IN
How discovered
V
Nature of condition
M
Precautionary procedure
K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

FOUND LH BATTERY WITH PRESSURE DAMMAGE TO CASE AND INDICATED ONLY 22 VOLTS