- Date
- March 26, 2021, 10:40 UTC
- Place
- North Canton, OH · Airport
- Damage
- Minor damage
- Phase of flight
- Initial climb
- Aircraft
- N709PSBombardier CL-600-2C10
- Defining event
- Initial climb: Fire/smoke (non-impact)
- Weather
- Visual (VMC) · Dawn
- Status
- Completed
- Report
- Approved by Office Director
- Investigation class
- Class 3
- NTSB office
- Aviation Engineering Division
- Parties
- FAA, PSA Airlines, PPG, AvTechYee
- FAA report
- 20210326002099I
- Case key
- 102901
From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the incident.
On this page
Probable cause
Moisture ingression thru the window humpseal coming into contact with the terminal block braid wires.
Findings · 3
NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings. Under each, the cases with the same finding.
Sequence of events
The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.
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.
Factual narrative
An evaluation of the fracture pattern indicated that the outboard glass ply failed due to a fracture along the bottom aft edge of the window. The conductive film interlayer located under the outboard ply reached a high enough temperature during the arcing event that it melted and fractured the outboard glass ply of the window. The arc escaped via the glass fracture, allowing the arc to come into contact with and melt the humpseal sealant. There were no indications of any burning or fire events on the inboard surface of the window (including the power terminal block). The event was contained to the outboard glass ply. The power terminal block was removed, and no damage was noted to the wiring and solder connections. There was evidence of moisture ingress and degradation of the interlayer of window was noted in some areas around the periphery of window. Humpseal degradation and improper humpseal repair techniques were noted.
Aircraft
- Registration
- N709PS
- Reported as
- Bombardier CL-600-2C10
- Category
- Airplane
- Serial number
- 10165
- Built
- 2004
- Engines
- GE CF34 SERIES, 9,140 lbs thrust, turbo fanGE CF34 SERIES, 9,140 lbs thrust, turbo fan
- Damage
- Minor damage
- Fire
- In-Flight
- Flight
- Part 121
- Operator
- PSA Airlines
- Registered owner
- Aerocentury Corp
- Airworthiness certificate
- Standard, Transport
- Flight plan
- IFR
- Airport
- CAK · Akron-Canton Rgnl
Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.
Weather
- Conditions
- Visual (VMC) · Dawn
- METAR
- 210 @23G36 10SM 18/13 BKN3800 A2943
FAA reports on this event · 1
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.
Other investigations on N709PS · 2
Matched to the same aircraft by N-number and date.