# SDR Y9PA2026FA0000288

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 23, 2026
- Submitted: April 23, 2026
- Operation: General aviation
- Aircraft: [N521SB](https://openairdocs.org/aircraft/N521SB), registered now
- Make and model: Gulstm GVSPG550
- Aircraft serial: 5199
- Aircraft time: 7,355 hours, 1,970 cycles
- System (JASC): [2432 · Battery/Charger System](https://openairdocs.org/jasc/2432)
- 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
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/Y9PA2026FA0000288

## Discrepancy

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

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