Probable cause
Moisture ingression thru the window humpseal coming into contact with the terminal block braid wires.
NTSB analysis
The outboard glass ply failed due to a fracture along the bottom aft edge of the window caused by an electrical arcing event. The arcing event was caused by moisture ingression that came into contact with the window heating terminal block braid wires.
Text from the NTSB. Open the NTSB docket for ENG21LA023 for the full record.
Event
- Date
- Mar 26, 2021
- Type
- Incident
- Place
- North Canton, Ohio
- Nearest airport
- Akron-Canton Rgnl (CAK)
- Highest injury
- None
- Weather
- Visual (VMC)
- Light
- Dawn
Bombardier Inc CL-600-2C10
- N-number
- N709PS
- Category
- Airplane
- Year built
- 2004
- Damage
- Minor
- Operating rule
- Part 121 (airline)
Other records under this N-number
From the NTSB aviation accident database: N-registered aircraft, events since 2008, data through Oct 28, 2026. The file is published monthly, so the latest weeks are incomplete and recent records can change. The official source is the NTSB aviation investigation search. CheckAero is independent and not affiliated with the NTSB.