737 Blown Across Ramp

Robert M. Gary wrote:

While its possible that someone does it, I'm not aware of any operator
that sets the brake on aircraft when its not occupied. Usually chalks
work just fine and are easier to move when you need to tow. In smaller
aircraft there are other reasons to avoid setting the brake, like
changes in outside pressure could burst the brake seals.

Since the biggest change in outside pressure that is likely to happen
is on the order of a pound and the working pressure in brakes is at
least an order of magnitude greater than that, I find it highly unlikely.

Perhaps if one were to land after extended flight at 10,000 feet at
Tucson in the middle of summer, the drastic temperature change might
have an effect, but I doubt it.

I've heard this many times and yet can imagine no situation other than
maybe leaving the brakes on for months at a time where it would do anything.

Any wrenches out there with real experiance feel free to contridict.


--
Jim Pennino

Remove .spam.sux to reply.

In article ,
wrote:

I've heard this many times and yet can imagine no situation other than
maybe leaving the brakes on for months at a time where it would do anything.

I was told during primary training that if you left the parking brake
on the pads could rust to the disks or drum and make it hard to get
moving. Don't know if that's realistic or not, but chocks and tiedowns
work a lot better for a small plane anyway.

Mike Beede

Mike Beede wrote:
In article ,
wrote:

I've heard this many times and yet can imagine no situation other than
maybe leaving the brakes on for months at a time where it would do anything.

I was told during primary training that if you left the parking brake
on the pads could rust to the disks or drum and make it hard to get
moving. Don't know if that's realistic or not, but chocks and tiedowns
work a lot better for a small plane anyway.

It is realistic and happens to cars in wet weather, but it takes several
days in wet weather for that to happen.

Depending on the parking brake on an airplane for more than a short
time is foolish in that the system wasn't really designed to hold the
airplane in place for days and weeks at a time; that's what chocks are
for.


--
Jim Pennino

Remove .spam.sux to reply.

wrote:
Mike Beede wrote:
In article ,
wrote:

I've heard this many times and yet can imagine no situation other than
maybe leaving the brakes on for months at a time where it would do anything.

I was told during primary training that if you left the parking brake
on the pads could rust to the disks or drum and make it hard to get
moving. Don't know if that's realistic or not, but chocks and tiedowns
work a lot better for a small plane anyway.

It is realistic and happens to cars in wet weather, but it takes several
days in wet weather for that to happen.

Depending on the parking brake on an airplane for more than a short
time is foolish in that the system wasn't really designed to hold the
airplane in place for days and weeks at a time; that's what chocks are
for.

No, that is what tie downs are for. Chocks are for temporary restraint
only and should not be used alone for long-term restraint.

Matt

Mike Beede writes:
I was told during primary training that if you left the parking brake
on the pads could rust to the disks or drum and make it hard to get
moving.

I ride my bike to work, so often I don't drive my car for a week or
more. This happens to me fairly often in my car -- I don't see why it
wouldn't happen in a plane even more often.

Chris

Mike Beede wrote:
In article ,
wrote:

I've heard this many times and yet can imagine no situation other than
maybe leaving the brakes on for months at a time where it would do anything.

I was told during primary training that if you left the parking brake
on the pads could rust to the disks or drum and make it hard to get
moving. Don't know if that's realistic or not, but chocks and tiedowns
work a lot better for a small plane anyway.

That is much more plausible than the "temperature change will blow the
seals excuse." I agree that tiedowns are best and chocks are fine for
most conditions, but aren't as good as the brakes being set. If a gust
of wind causes a chock jump, then the plane will keep on moving with
nothing to restrain it. If the brakes are set, then even a gust that
slides the tires won't keep the airplane moving once the gust subsides.

The main reason I know of that most people park airplanes with the
brakes released is to facilitate movement of the airplane when the owner
isn't around.

Matt

On Dec 29, 9:53*am, Matt Whiting wrote:

The main reason I know of that most people park airplanes with the
brakes released is to facilitate movement of the airplane when the owner
isn't around.

Matt,
As it relates to the OP, the parking brake is never relied upon and
the plane is always chocked with or without the brake on. An airline
does not tow an airplane without a qualified person (Either a pilot or
mechanic who has been checked out for towing) in the front seat.
FB

F. Baum writes:

As it relates to the OP, the parking brake is never relied upon and
the plane is always chocked with or without the brake on. An airline
does not tow an airplane without a qualified person (Either a pilot or
mechanic who has been checked out for towing) in the front seat.

I don't understand how a small pair of chocks can hold an aircraft in place.
It seems like a trivial obstacle to overcome when the wind is hitting all
those aerodynamic surfaces.

Mxsmanic wrote in
:

F. Baum writes:

As it relates to the OP, the parking brake is never relied upon and
the plane is always chocked with or without the brake on. An airline
does not tow an airplane without a qualified person (Either a pilot
or mechanic who has been checked out for towing) in the front seat.

I don't understand how a small pair of chocks can hold an aircraft in
place.

That's because you don;t fly, fjukkwit.


Bertie

"Mxsmanic" wrote in message
...

I don't understand how a small pair of chocks can hold an aircraft in
place.

Gee, There's a surprise. I'm gonna have a heart attack and die from that
surprise.