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-   -   CRJ Door / Pressurization Question (https://www.airlinepilotforums.com/regional/28291-crj-door-pressurization-question.html)

cencal83406 07-05-2008 12:53 PM

If someone tries to open the door they won't get too far... In an RJ what would a passenger be doing up in the front anyways?

Avroman 07-05-2008 03:37 PM

Well at least on the CRJ900 the passenger could be up waiting to drop a deuce. Or bailing out from the person in front of them doing so.

cessna157 07-05-2008 09:33 PM


Originally Posted by BlueMoon (Post 418897)
That is the same amount of pressure on the pins, I'm going to say it would be near impossible to rotate the cams with that much pressure on it...the handle would snap first.

Yeah, that is correct. There's a reason that the handle is connected to the cams and pins with a cable. That cable is meant to break (I've seen it happen, doesn't take much to break it) before the door is opened.

On a side note for the CRJ drivers, here's a quick fix that a lot of guys don't know. I don't know if it does it on the 70s and 90s, but the 50s this was a common problem at some gates (depends on the orientation of the gate). If you ever pull into a gate and cannot open the pax door, do not panic, do not call maintenance. Have the ramp crew push you back 25 feet and pull you back in. The airframe is torqued and the door gets stuck in its opening. By towing you back and forth, it usually untwists the airframe and all should be good. There are 4-6 gates (I don't remember which ones) at CVG concourse C that will do this.




Originally Posted by Avroman (Post 419197)
Well at least on the CRJ900 the passenger could be up waiting to drop a deuce. Or bailing out from the person in front of them doing so.


Are we forgetting the 700?

⌐ AV8OR WANNABE 07-05-2008 09:42 PM


Originally Posted by MesaFA (Post 418867)
... I’ve been told that it’s next to impossible to open a cabin door in-flight, due to the pressure differential...

MesaFA - Why do you want to know that? Is your name Ahmed by any chance? ;)

DylanFan 07-05-2008 09:58 PM

The latest interesting door story I read was in the June issue of Professional Pilot.

Apparently a mechanic had just replaced the VSI in a King Air and had the pilot take it up on a test flight. After the plane taxied in from the test flight, the mechanic attempted to board the plane with the engines still running (which is very doable in a King Air.) When he opened the door from the outside, the plane was still pressurized enough to force the door outward fast enough to hit the mechanic in the head and kill him.

The Chow 07-06-2008 03:31 AM


Originally Posted by ⌐ AV8OR WANNABE (Post 419377)
MesaFA - Why do you want to know that? Is your name Ahmed by any chance? ;)


I like this one better. ;)

VTcharter 07-06-2008 04:37 AM


Originally Posted by DylanFan (Post 419382)
The latest interesting door story I read was in the June issue of Professional Pilot.

Apparently a mechanic had just replaced the VSI in a King Air and had the pilot take it up on a test flight. After the plane taxied in from the test flight, the mechanic attempted to board the plane with the engines still running (which is very doable in a King Air.) When he opened the door from the outside, the plane was still pressurized enough to force the door outward fast enough to hit the mechanic in the head and kill him.

Also in a King Air, a Co-pilot was removed from the aircraft inadvertently after getting up to investigate a "Cabin Door" light. Upon grabbing the door handle the door popped open and he was pulled out of the aircraft. His arm caught in the door cable (luckily) and he hung out there with the door until the aircraft was landed. Memory items for door light in the King Air are for all occupants to stay seated and seat belt fastened. Seems to me that it wouldn't be too hard...I'm sure a negative pressure valve could fail...its normally just a diaghram, and it likely wouldn't be a known failure until it was tried.

JasonGerald 07-06-2008 12:55 PM


Originally Posted by MatthewAMEL (Post 418924)
CHQ had an incident in IAH where a FA was injured by opening the main cabin door while the A/C had a small amount of pressurization remaining. The door came open so fast and with so much force, she was thrown onto the ramp. She was badly injured.

As a -200 PIC for a while, that was my 2nd least favorite thing about the A/C. (inability to disconnect the engine driven HYD pump was #1 - it forced an in-flight shutdown and RTB once).

I recall, from my Comair days, that prior to opening the main cabin door pilots were suppose to check that cabin differential was less than .1 psid. I do recall now an FA telling me that the door jerked right out of her hand as she was opening. I guess I forgot to check the psid that time.

Some may recall an American Airlines Airbus accident a couple of years ago. A FA was sucked out when, he or she, opened a door on the ramp and the aircraft hadn't depressurized properly. The FA was killed on contact with the tarmac.


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