CL604 Down Naples FL

Aviation & Pilots Forums, discuss topics that interest Pilots and Aviation Enthusiasts. Looking for information on how to become a pilot? Check out our Free online pilot exams and flight training resources section.
Slick Goodlin
Posts: 832
Joined: Thu Jan 16, 2020 3:24 am

That blows to have missed lining up with the highway by *this* much. I mean it blows to have lost both engines and all that but avoiding that wall or fence or whatever could have been the pilots’ last chance to be able to walk away.


User avatar
Colonel
Posts: 2411
Joined: Wed Jan 15, 2020 10:02 pm
Location: Over The Runway

That acoustic wall sure made a lot of noise.

https://www.youtube.com/results?search_ ... s+reasontv
Neil Peart didn’t need you to be his friend
Eric Janson
Posts: 69
Joined: Thu Jan 16, 2020 3:45 am

Colonel wrote:
Tue Feb 13, 2024 3:47 pm
Would it have improved his landing?

PS The chart for the low fuel temp limits did not include time. Strange.
True - but it would reduce controller confusion. That seems to be the case every time an Emergency is declared instead of using MAYDAY.

Regarding fuel temp.

- Takes time for fuel to cool. There is no issue until you reach the minimum temperature.
- The lowest temperature the fuel will cool to is the OAT + Ram rise (TAT or Total Air Temperature). The Ram rise can easily be 20c.

It's unusual for the TAT to get close to the fuel freezing temperature - I've only seen it a handful of times.

The most extreme I've seen is flying over Siberia during COVID. This was the first and only time I've seen a warning for the trim tank in the Stabiliser. The procedure is to transfer the fuel to the main tanks which have fuel/oil heat exchangers and return flow from the Integrated Drive Generators.

Increasing the speed will increase the Ram rise and descending should increase the OAT - both can be used but it takes time to warm the fuel.
User avatar
Colonel
Posts: 2411
Joined: Wed Jan 15, 2020 10:02 pm
Location: Over The Runway

What would have been the effect of idle power in the descent from FL400 on the fuel heater effectiveness?
Neil Peart didn’t need you to be his friend
Nark
Posts: 576
Joined: Wed Jan 15, 2020 9:29 pm
Contact:

I can’t talk for the 604, but for the Airbus 320 series return fuel cycled around the IDG’s (Integrated Drive Generators) typically sees temps in the 80-100* F range. Idle from FL400 probably wouldn’t inhibit heat exchange that much. (You asked about 30 minutes too late, other wise I could have snapped a pic)

Again, not a -604/CRJ rated pilot. (2 jet types I’ve flown run the same type of system)
Twin Beech restoration:
www.barelyaviated.com
Nark
Posts: 576
Joined: Wed Jan 15, 2020 9:29 pm
Contact:

I have a buddy who flies the 604. I asked him about the potential for freezing fuel, and it’s almost nil.

They don’t even add prist unless oil temps fall below 27 (I’m assuming in freedom units)

He’s flying to some shitty ski hill place in the Rockies tomorrow. I asked him to see what temps do.
Twin Beech restoration:
www.barelyaviated.com
User avatar
Colonel
Posts: 2411
Joined: Wed Jan 15, 2020 10:02 pm
Location: Over The Runway

Oof. The other causes of double engine failure are not pretty.

Because of the incredible complexity of the Challenger fuel system, as an engineer I was suspicious of a SPOF.
Complicated sh1t breaks, sooner or later. Just a matter of time.

https://en.wikipedia.org/wiki/Single_point_of_failure
Neil Peart didn’t need you to be his friend
User avatar
Scudrunner
Site Admin
Posts: 1163
Joined: Mon Jan 13, 2014 3:18 am
Location: Drinking Coffee in FBO Lounge
Contact:

5 out of 2 Pilots are Dyslexic.
digits
Posts: 213
Joined: Thu Jan 16, 2020 4:15 am

After the airplane came to rest, the cabin attendant stated that she identified that the cabin
and emergency exits were blocked by fire and coordinated the successful egress of her
passengers and herself through the baggage compartment door in the tail section of the
airplane.
Impressive. Does the CL604 have a door handle on the inside of the baggage compartment door to open the door from the inside?
User avatar
Scudrunner
Site Admin
Posts: 1163
Joined: Mon Jan 13, 2014 3:18 am
Location: Drinking Coffee in FBO Lounge
Contact:

Yes it does, its sort of a plug style. Grab the handle you pull forward then it comes in and up.

You can see it in this video at the 2:20 mark.

5 out of 2 Pilots are Dyslexic.
Post Reply
  • Similar Topics
    Replies
    Views
    Last post