[simpits-tech] Jetstream Update

[Darren Beaumont]

Roy,

Quite a few a/c have the roll/pitch disconnect system, Saab 340, Saab
2000, ERJ 13x/14x etc.  The idea is if there is a control
jam/restriction, you can either pull the handle for either pitch, roll
or both, so that the unaffected side maintains some sort of control - as
you've found out the only way to reset the system once on the ground is
to start opening up panels etc.  The system can also operate if a higher
than normal force is used, approx 45-50lbs of force for the Saab 340,
which temporarily disconnects the affected channel and is automatically
reset when the force returns to normal.

It should all be in Chapter 27 of the Maintenance Manual, how the system
works and how to reset the system.

Its an ingenious idea and has saved a few people and a/c from an
untimely end. 

Good luck on the Jetstream.

Darren

-----Original Message-----
From: simpits-tech-admin@simpits.org
[mailto:simpits-tech-admin@simpits.org] On Behalf Of Roy Coates
Sent: 21 July 2003 20:07
To: simpits-tech@simpits.org
Subject: Re: [simpits-tech] Jetstream Update


On Mon, 21 Jul 2003, Bubba wrote:

> > For some reason known only to BAe, there are two levers which - when
> > pulled disconnect the roll and pitch linkages between the two yokes.
>
> You could have just asked about that.

ah, I know now! The beauty of having all those lovely manuals. I've
never
had much interest in this type of aircraft, the fun here is the sim part
for me. It's also pretty cool having a 'pit you can work/play in and
then
stretch out in the back to have your lunch.


> I don't know a ton about the
> Jetstream, but that's one thing I do know. The disconnects are there
so that
> if something jams one yoke the other can be unlocked from it to regain
> control.

Yeah - I'm not sure if the system is very smart, or pretty weird. I
guess
only a real pilot can tell me that.


> My dad flew Jetstreams years ago when he first started with Eastern
> Metro Express in the 80's, then later when he moved to the left seat.
He got
> back to the Dash-8 as fast as humanly possible ;)

Interesting. I'd love to hear his comments on the 41.


> And just so people will call me a bastard I'll throw this in. One of
the
> perks of being a professional pilot's son is knowing the other pilots.
> Before the world went to shit I used to fly the jumpseat in Dash-8's
fairly
> regularly. The least comfortable seat on the plane, but one of the
best
> views. One time the FA just yanked the cockpit door open with no
warning
> while I was up there. For those of you that don't know, the jumpseat
folds
> down in the doorway and the door is the back of the seat. I fell back
and
> wound up getting quite a different view from the floor under her ;)

I won't call you a bastard steve - I'll call you a lucky bastard! ;)


> The only reason I haven't flown a Jetstream is bad timing. I never had
a
> chance to fly with a Capt. named Bucky. He said that if I ever managed
to
> get on the same plane as him he'd tell the FO to go take a nap and let
me
> fly for a bit. Highly illegal, but it's not like I didn't know what I
was
> doing ;)

Its always been a liability issue, and since 9/11 its justified paranoia

I'm not a big fan of the 41 - I'm just having fun getting to play with
one.

Roy.


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