Neither does @TFaudree_ERAU
Canadair Crash at ASE / Aspen Eagle, Colorado
- Thread starter mikecweb
- Start date
Vector4Food
This job would be easier without all the airplanes
Be curious to know what their actual ground speed was, it looked like an air show pass.
TFaudree_ERAU
Mashin' dem buttons
I'm surprised we never got a bill for pot hole repair.
Sol Rosenburg
Well-Known Member
so the challenger has auto spoilers? squat switch or wheel run up?
NewYorkophile
Fly Casual
Any good discussions to have on the merits and drawbacks of each?
TFaudree_ERAU
Mashin' dem buttons
Only takes one OR the other, but not both.
Sol Rosenburg
Well-Known Member
so I take it a balked landing would have a memory item to slam that lever back down?
Ground spoilers don't move the spoiler lever.
TFaudree_ERAU
Mashin' dem buttons
The gotcha in a Challenger is when one of the prox switches or sensors fails (squat switches in simple terms). The airplane will always think it's on the ground. Symptoms include the gear safety latch failing to disengage, deployment of ground spoilers when thrust levers are moved to idle, and deployment of ground spoilers in conjunction with application of flight spoilers. The latter two only occur if the crew fails to observe the WOW I/P FAIL or WOW O/P FAIL light and take the appropriate action of turning the ground spoiler switch to the OFF position.
Aside from that, and bouncing like an over inflated basketball as in this case, they work pretty well.
TFaudree_ERAU
Mashin' dem buttons
They SHOULD stow as soon as the thrust levers are advanced.
Gee @TFaudree_ERAU you seem to know a whole lot about this subject. Glad to have that resource on JC, then again my wife is also pretty familiar with the system as well thanks to your "tutelage".
TFaudree_ERAU
Mashin' dem buttons
Nothing a good neck brace can't take care of.
Stone Cold
Well-Known Member
I take it he bounced one in in spectacular fashion...
NJC14
TFaudree_ERAU
Mashin' dem buttons
What do they say about always learning? Well, I got my fair share of learning that day.
They auto-deploy. They also auto-retract if the reversers are stowed. And you can't advance the thrust levers with the reversers deployed. There is a lock.
TFaudree_ERAU
Mashin' dem buttons
When did thrust reversers come into the mix?
And, in the 601, they don't auto-retract when the reversers stow.
I was just adding a point to your discussion. The whole system runs off a lot of the same indications.
Did not know that about the 601
fast89pony
Well-Known Member
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wait til "camera 5". it bounces 30 feet back into the air!
rvg203
Well-Known Member
Looks like a classic PIO scenario. Some airplanes are much more prone to it than others. For example, the Grob 103 has a history of doing this when forcing it onto the runway at too high an airspeed. I have seen one land in a tailwind, pushed on to the runway, and bounce all the way down due to overcorrections. Luckily, the impacts weren't hard enough to damage the airplane. The pilot finally set the spoilers to an open position, held a landing pitch attitude, and settled to the runway once the speed bled off enough.
Unfortunately in this case, it looked like the nose down input at the top of the "cycle" was too drastic to recover from.
Unfortunately in this case, it looked like the nose down input at the top of the "cycle" was too drastic to recover from.