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DHC-8 question

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Old 12-23-2006 | 08:44 AM
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Default DHC-8 question

I flew the airlines back from recurrent at FSI, and rode one leg on a Dash 8-300. Although I was seated aft of the props, It seemed very quiet.

I was curious as to the cruise RPM on a Dash?


(It was Dec. 22nd, the flight was late and needed to quick turn, so I did not bother the crew to ask.)
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Old 12-23-2006 | 08:45 AM
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The SAAB is 1230 rpm, the -8 is probably somewhere in that area as well.
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Old 12-23-2006 | 09:26 AM
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If you were riding on a PDT DHC8-300, its typically 900 RPM.

Lax
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Old 12-23-2006 | 09:56 AM
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Wow, what's the blade diameter for a prop to have to spin that slow?
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Old 12-23-2006 | 10:38 AM
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Originally Posted by KiloAlpha
Wow, what's the blade diameter for a prop to have to spin that slow?
Roughly 13', if memory serves.
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Old 12-23-2006 | 11:44 AM
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Originally Posted by Laxrox43
If you were riding on a PDT DHC8-300, its typically 900 RPM.

Lax
Yep, it was a PDT. Is that a PDT SOP or a DHC SOP?
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Old 12-23-2006 | 12:50 PM
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It's a PDT SOP for sure. (900 RPM for cruise) Other than that, I'm not too sure? Any Horizon, Island Air, Caribbean Star guys/gals want to chime in? Maybe even De Havilland/Bombardier people want to chime in?

Lax
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Old 12-23-2006 | 01:27 PM
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Originally Posted by Laxrox43
It's a PDT SOP for sure. (900 RPM for cruise) Other than that, I'm not too sure? Any Horizon, Island Air, Caribbean Star guys/gals want to chime in? Maybe even De Havilland/Bombardier people want to chime in?

Lax
I would be curious since you specified a PDT Dash. If it is not an aircraft SOP, is it a mod or something? For example, Raisbeck's prop mod for the BE-20 allows for a 1600 RPM cruise, instead of 1700.
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Old 12-23-2006 | 01:49 PM
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I'm pretty certain that's the standard cruise profile for the Dash. There is no mod that allows 900; that's just what the props are regulated to with the condition levers at "min."
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Old 12-23-2006 | 06:37 PM
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From: BE-20, RA390
Default Dash Pilots:

Thanks for the response guys:

How does the Dash fly? What does it do well and not so well?
Is it a typical deHavilland workhorse?

I know it is an old airplane that has been successful, but I was curious from a pilot standpoint.

Last edited by GauleyPilot; 12-23-2006 at 06:56 PM.
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