Boarding with engines running

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"Mxsmanic" wrote in message
Is it safe/advisable to board a small single- or twin-engined aircraft
while
the prop(s) and engine(s) are turning? I'm just wondering if this is
feasible
if you just have someone getting on or getting off (with the pilot being
in
the aircraft the whole time).

It's feasible if some precautions are exercised. I did single-engine turns
in 19 seat turboprops for years. The left seat pilot watches out the window
for passengers who go anywhere but the stairs and the right seat pilot is at
the base of the stairs to guide the passengers. Only once did we shutdown in
a panic. I saw the wind take a stuffed animal from a child's hand toward the
running engine. I feared the child would bolt for the stuffed animal and I
feathered the engine into shutdown. Fortunately the child didn't go after
it.

On a related note, how long can you safely leave an aircraft (engines off)
with just the parking brake set, and when do you normally put chocks under
the
wheels?

On the big jets, we stop at the gate, set the parking brake, check for
alternate electrical power, shutdown the engines, turn off the seatbelt
sign, wait for the signal that chocks are in place, and release the parking
brake for heat dissipation.

D.

On the big jets, we stop at the gate, set the parking brake, check for
alternate electrical power, shutdown the engines, turn off the seatbelt
sign, wait for the signal that chocks are in place, and release the
parking
brake for heat dissipation.

I had known when the parking brake was normally applied on a transport jet,
but not when it was usually released--just not something I ever needed to
know.

Thanks,
Peter

Capt.Doug writes:

On the big jets, we stop at the gate, set the parking brake, check for
alternate electrical power, shutdown the engines, turn off the seatbelt
sign, wait for the signal that chocks are in place, and release the parking
brake for heat dissipation.

Is the parking brake on a large aircraft a separate mechanism from the regular
brakes, or does it use the same mechanism?

Which reminds me ... I once took off from LAX in my 747-400, and after a bit I
happened to look at the gear page on the EICAS, and it showed all the brakes
in the yellow range for temperature (9). I absolutely could not figure out
how I had heated them up, as I had rolled very gentle to the runway, and I had
generally slowed just by cutting the throttle rather than by applying the
brakes (the 747-400 seems to slow very quickly if you have N1 at less than 36%
or so, even lightly loaded).

--
Transpose mxsmanic and gmail to reach me by e-mail.

Mxsmanic wrote:
Capt.Doug writes:


On the big jets, we stop at the gate, set the parking brake, check for
alternate electrical power, shutdown the engines, turn off the seatbelt
sign, wait for the signal that chocks are in place, and release the parking
brake for heat dissipation.


Is the parking brake on a large aircraft a separate mechanism from the regular
brakes, or does it use the same mechanism?

Which reminds me ... I once took off from LAX in my 747-400, and after a bit I
happened to look at the gear page on the EICAS, and it showed all the brakes
in the yellow range for temperature (9). I absolutely could not figure out
how I had heated them up, as I had rolled very gentle to the runway, and I had
generally slowed just by cutting the throttle rather than by applying the
brakes (the 747-400 seems to slow very quickly if you have N1 at less than 36%
or so, even lightly loaded).

Gracious, Anthony! First your spell checker fails, and now your grammar
is going by the wayside, too? Are you overdosing on Jolt and Galoise, or
is it just time to check the meds?

"Mxsmanic" wrote in message
Is the parking brake on a large aircraft a separate mechanism from the
regular
brakes, or does it use the same mechanism?

Typically alternate pucks in the calipers will be powered by different
hydraulic systems. The parking brake will use one set of pucks.

Which reminds me ... I once took off from LAX in my 747-400, and after a
bit I
happened to look at the gear page on the EICAS, and it showed all the
brakes
in the yellow range for temperature

Did you retrack the gear into the wheel-wells with elevated temperatures?
That could be a major fire hazard.

D.

Capt.Doug writes:

Typically alternate pucks in the calipers will be powered by different
hydraulic systems. The parking brake will use one set of pucks.

So setting the parking brake in a large aircraft has some of the same
disadvantages as in a small aircraft, if hydraulic pressure is being
maintained.

Did you retrack the gear into the wheel-wells with elevated temperatures?
That could be a major fire hazard.

Unfortunately, yes. I only found out that the brakes were very hot by
accident, and I was well into my departure by then.

--
Transpose mxsmanic and gmail to reach me by e-mail.

Mxsmanic wrote:

Unfortunately, yes. I only found out that the brakes were very hot by
accident, and I was well into my departure by then.

In what fantasy world was this? You are insane.

F--

Mxsmanic wrote in
:

Capt.Doug writes:

Typically alternate pucks in the calipers will be powered by
different hydraulic systems. The parking brake will use one set of
pucks.

So setting the parking brake in a large aircraft has some of the same
disadvantages as in a small aircraft, if hydraulic pressure is being
maintained.

Did you retrack the gear into the wheel-wells with elevated
temperatures? That could be a major fire hazard.

Unfortunately, yes. I only found out that the brakes were very hot by
accident, and I was well into my departure by then.


into your departure?


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hwhahwhhahwhahwhahwhhahwhahwhahwhhahwhahwhahwhhahw hahwhhahwhahwhahhwhahw
hhahwhahwhhawhhahwhahwh!



bertie

On Feb 23, 8:04 pm, Mxsmanic wrote:
Is it safe/advisable to board a small single- or twin-engined aircraft while
the prop(s) and engine(s) are turning? I'm just wondering if this is feasible
if you just have someone getting on or getting off (with the pilot being in
the aircraft the whole time).

On a related note, how long can you safely leave an aircraft (engines off)
with just the parking brake set, and when do you normally put chocks under the
wheels?

Use the pause button when boarding imaginary passengers. If you're
leaving the simulated aircraft for a longer period, power down the PC.

And don't think for a moment that the pretend controllers give a rats
ass about how long you leave the simulated plane on the pretend ramp
while boarding imaginary passengers.