Hi guys, I need some help trying to find some info on a Bell 214. Does flying with bubble doors/windows result in any air speed restrictions? I can't seem to find it in the flight manual...

Thanks

Normally 120 kts

the company you are working for will be able to confirm that

Thanks for the speedy reply :)

I assumed it was 120 kts, I just couldn't find anything specific in the Manual about them.

Cheers

Mmmmm ....

Should there not be a "supplement" for a "Bubble Window" installation in the RFM .... in which case variations to the Limitations would be there!


:confused:

There's nothing about bubble windows in the supplements (Section10). I'll do a bit more searching but it's not too big a drama.

Thanks again guys for your help.

There's nothing about bubble windows in the supplements (Section10)

Then either the RFM is not up to date or the aircraft has an unapproved modification.

Which 214 are you talking about B, B-1 or ST?

The VNE is 140 kts as per our flight supplement . If the helicopter your talking about is yellow and blue ,it won't be in there .

It's not for a job, I was lucky enough to be given a copy and I wanted to learn more about them - my curiosity's getting the better of me. It's a B1 model.

I have the flight manual on my hard drive as well as the m.m 's. ST one's as well .

I've got a few more questions about these awesome machines.

The maximum rate of climb is limited to 2000ft/min. Is this a strtuctural limit? e.g. Main GB stress limit or a Parasite Drag etc? I've never been in anything powerful enough to have a limit as such.

Why does the HYD System 1 run cooler? Does System 1 have less load, have longer piping or similar (which inadvertantly aids in heat conduction)??

When do the secondary nozzles open during starting? When N1 is 37%?

I don't expect them all to be answered, but nay help is greatly appreciated.

Thank you

Maximum rate of climb - think ballistics, how long will you wait after the engine fails for gravity to take over and enter autorotation? 6-7000 fpm can be achieved. i.e > 60 knots. Also it is possible for the greenhouse windows above your head to fall in on you.

HYD is similar to 212/412 the pump is turning faster. Design thing, the second pump came along later and is driven from a different part of the MGB.

When do the secondary nozzles open? Who cares, just that they do.

B1 means reduced internal gross weight over B and is only a flight manual change to be technically under 12,500 lbs.

Mmmmm ....


Yes ... the Hyd System 1 pump runs quite a bit slower (by nearly 2000 rpm I think) and as it also operates the Yaw system Hydraulics has more pipe work and thus runs much cooler.


:}

Cheers guys :)