PSA CRJ7 at Akron on Mar 26th 2021, flame in cockpit
Last Update: May 28, 2022 / 19:33:54 GMT/Zulu time
Incident Facts
Date of incident
Mar 26, 2021
Classification
Incident
Airline
PSA Airlines
Flight number
AA-5440
Departure
Akron, United States
Destination
Philadelphia, United States
Aircraft Registration
N709PS
Aircraft Type
Canadair CRJ-700
ICAO Type Designator
CRJ7
On Jun 30th 2021 the NTSB reported an inflight fire causing minor damage occurred. The occurrence was rated an incident and is being investigated by the NTSB.
On May 28th 2022 the NTSB released their final report concluding the probable cause of the incident was:
Moisture ingression thru the window humpseal coming into contact with the terminal block braid wires.
The NTSB analysed:
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.
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.
Incident Facts
Date of incident
Mar 26, 2021
Classification
Incident
Airline
PSA Airlines
Flight number
AA-5440
Departure
Akron, United States
Destination
Philadelphia, United States
Aircraft Registration
N709PS
Aircraft Type
Canadair CRJ-700
ICAO Type Designator
CRJ7
This article is published under license from Avherald.com. © of text by Avherald.com.
Article source
You can read 2 more free articles without a subscription.
Subscribe now and continue reading without any limits!
Read unlimited articles and receive our daily update briefing. Gain better insights into what is happening in commercial aviation safety.
Send tip
Support AeroInside by sending a small tip amount.
Related articles
PSA CRJ7 at Charlotte on Feb 15th 2017, deer strike on departure
A PSA Airlines Canadair CRJ-700 on behalf of American Airlines, registration N709PS performing flight AA-5320 from Charlotte,NC to Gulfport,MS (USA)…
PSA CRJ7 at Harrisburg on Jun 27th 2018, dropped gear door
A PSA Airlines Canadair CRJ-700 on behalf of American Airlines, registration N709PS performing flight AA-5560 from Charlotte,NC to Harrisburg,PA…
PSA CRJ7 at Jackson on Jan 30th 2023, suspected fuel leak
A PSA Airlines Canadair CRJ-700 on behalf of American Airlines, registration N702PS performing flight AA-5359 from Jackson,MS to Washington…
PSA CRJ9 at Portland on Jan 23rd 2023, runway excursion
A PSA Airlines Canadair CRJ-900 on behalf of American Airlines, registration N612NN performing flight AA-5280 from Philadelphia,PA to Portland,ME…
PSA CRJ9 at Tallahassee on Dec 19th 2022, tyre problem on departure
A PSA Airlines Canadair CRJ-900 on behalf of American Airlines, registration N600NN performing flight AA-5548 from Tallahassee,FL to Charlotte,NC…
PSA CRJ7 at Buffalo on Sep 28th 2022, TCAS RA maneouver injures two flight attendants
A PSA Airlines Canadair CRJ-700 on behalf of American Airlines, registration N519AE performing flight AA-5647 from Philadelphia,PA to Buffalo,NY…
PSA CRJ9 at Norfolk on Sep 19th 2022, gear problem
A PSA Airlines Canadair CRJ-900 on behalf of American Airlines, registration N557NN performing flight AA-5520 from Norfolk,VA to Washington…
Newest articles
Canada A320 enroute on Jan 29th 2023, engine rolled back
An Air Canada Airbus A320-200, registration C-FKPT performing flight AC-7081 from Buffalo,NY (USA) to Montreal,QC (Canada) with 2 crew, had just…
Southwest B738 at Saint Louis on Feb 5th 2023, bird strike
A Southwest Airlines Boeing 737-800, registration N8678E performing flight WN-1260 from Saint Louis,MO to Pittsburgh,PA (USA), was climbing out of…
Subscribe today
Are you researching aviation incidents? Get access to AeroInside Insights, unlimited read access and receive the daily newsletter.
Pick your plan and subscribePartner

A new way to document and demonstrate airworthiness compliance and aircraft value. Find out more.

ELITE Simulation Solutions is a leading global provider of Flight Simulation Training Devices, IFR training software as well as flight controls and related services. Find out more.
AeroInside Blog
Popular aircraft
Airbus A320Boeing 737-800
Boeing 737-800 MAX
Popular airlines
American AirlinesUnited
Delta
Air Canada
Lufthansa
British Airways