Encore Emergency evac

[Bookem Lou]

Glad this incident turned out well. Any thoughts to what the cause could be?

https://www.cheknews.ca/westjet-plane-e ... in-431082/

[gianthammer]

More then likely something combustible

[Heliian]

https://www.ctvnews.ca/canada/tsb-inves ... -1.3851949

"Given the amount of smoke in the cabin, Thacker wonders why oxygen masks were not deployed.

“They told us to breathe through our shirts,” he said."

Probably not a good idea to put oxygen on a fire.

Of course, someone is taping the whole thing and no doubt half the passengers brought their luggage out with them.

[skypirate88]

I suspect masks were not deployed because they don't have any installed. Unless Encore purchased the option, they likely don't have then in the Q.

[indieadventurer]

I suspect masks were not deployed because they don't have any installed. Unless Encore purchased the option, they likely don't have then in the Q.

Can confirm, no drop down masks.

[pilotbzh]

pax mask are bad in smoke, they are re-breathing mask and concentrate fumes...only good to give O2 at altitude...

[DH82EH]

pax mask are bad in smoke, they are re-breathing mask and concentrate fumes...only good to give O2 at altitude...

Any passenger oxygen masks I have been involved with are separate oxygen generators.
If you listen to the safety briefing one is instructed to pull on the mask.
This dislodges a pin that is spring loaded. This starts the chemical reaction. The byproduct of which is oxygen.
It is not recirculated.

Flight crews are provided with oxygen through a compressed gas bottle that is regularly serviced. (Routinely checked and serviced on a line check).
This source is entirely separate from pax O2.

Q-400's have a max ceiling of 25,000 feet and are certified without supplemental oxygen. In the event of depressurization they descend.
Clearly, this doesn't help anything when the cabin is contaminated with smoke (possibly through the Air cycle machine and pressurization system).

Q-400's are equipped with therapeutic oxygen bottles. Off the top of my head I think there are 3. Used in case of illness or light headedness.
They are stowed at the front and back of the aircraft and would be brought by a flight attendant if required.

[pilotbzh]

http://www.b737.org.uk/emergency_equipm ... ger_Oxygen

Passenger Oxygen
Classics & NG's: Will deploy automatically above 14,000ft cabin alt or when switched on from the aft overhead panel. No oxygen will flow in a PSU until a mask in that PSU has been pulled. Passenger oxygen should not be used as smoke hoods as the air inhaled is a mixture of oxygen and cabin air and there is a significant fire hazard with oxygen in the cabin.

Same for all airliners....

Smoke will rise breath clean air close to the floor....or use a smoke hood

[flyer 1492]

Not to mention that with the passenger masks, once the pin is pulled O2 is supplied to all the masks. So if you have 3 masks on one side and only 2 passengers, there is one mask pumping out O2 into the cabin. Not a great scenario in an electrical fire.

[linecrew]

Regarding the no masks issue in a Q400, a similar incident happened back in 2015 on a Porter flight and it was explained then too.

https://www.theglobeandmail.com/news/na ... e26915151/

[Zaibatsu]

pax mask are bad in smoke, they are re-breathing mask and concentrate fumes...only good to give O2 at altitude...

Any passenger oxygen masks I have been involved with are separate oxygen generators.
If you listen to the safety briefing one is instructed to pull on the mask.
This dislodges a pin that is spring loaded. This starts the chemical reaction. The byproduct of which is oxygen.
It is not recirculated.

Flight crews are provided with oxygen through a compressed gas bottle that is regularly serviced. (Routinely checked and serviced on a line check).
This source is entirely separate from pax O2.

Q-400's have a max ceiling of 25,000 feet and are certified without supplemental oxygen. In the event of depressurization they descend.
Clearly, this doesn't help anything when the cabin is contaminated with smoke (possibly through the Air cycle machine and pressurization system).

Q-400's are equipped with therapeutic oxygen bottles. Off the top of my head I think there are 3. Used in case of illness or light headedness.
They are stowed at the front and back of the aircraft and would be brought by a flight attendant if required.

They may provide their own O2, but they are not positive pressure like a pilot's O2 mask in the EMERG position. They don't meet the standards for PBE, and they do draw from the cabin environment as well as the O2 generator.

[7ECA]

UPDATE from Airworthiness: A Civil Aviation Safety Inspector (CASI) looked into this occurrence. On arrival CYCD, smoke detected in Flight Deck and Cabin. Evacuation carried out upon landing. Maintenance investigation discovered engine oil on internal/external #1 engine cowls. An engine run was able to duplicate the defect. #1 Engine change in-work. Removed power plant to be routed to manufacturer for investigation. No previous related maintenance. Engine trend normal preceding the event. Engine had been installed since new aircraft delivery. A service difficulty report (SDR) was submitted.