Pitch and Power table for PA28R?

IrishFlyer

Wacky and Waving
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Mar 22, 2004
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Hello,

Has anyone got any pitch and power settings that are useful for IR training in a PA28R? Such stuff as non precision, precision, holding settings would be helpful.

Thanks,

IF
 

Doc Holiday

Well-known member
Joined
Jul 10, 2005
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>1000
A general rule of thumb in single engine trainging aircraft is for a given airspeed, each change of 100 RPM will yield a 100 FPM rate of climb/descent.

For example, if you are flying an ILS approach at 90 KIAS, to start down the glide slope and maintain 90 KIAS, reduce your power by 500 RPM (this assumes a groundspeed of approx. 90 KIAS, as that groundspeed requires about 500 FPM. If your GS is much slower than that a slower rate of descent would be needed and require less of a power reduction to maintain 90 KIAS on the glide slope...you get the idea.

For a nonprecision approach, 700 FPM is commonly used to descend to MDA in training aircraft - that would require a power reduction of about 700 RPM.

As with any airplane there are no hard and fast rules for power/airspeed combinations. Density altitude and aircraft weight make it necessary to make slight adjustments to "rules of thumb" to get the desired results. This should get you pretty close, though.

From your profile, it looks like you are working toward your CFII. Something I would suggest is looking at the older Instrument Flying Handbook (blue cover, black and white pages). In the back are excersices, which include the "Vertical S" series. They are somewhat tedious, but if you can do them, and teach your students to do them well, they really increase the quality of the instrument scan and bring pitch/power/airspeed/rate of climb relationship up to a level where it almost becomes habit.

Hope this helps.
 

Douglas H

EMB145 FO
Joined
Nov 19, 2002
Posts
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4100
Try the following:

Holds - 20" 2400 rpm
ILS - 15" 2400 rpm Gear down and flaps 10 degrees
Non - precision IAP (700 fpm) - 13" 2400 rpm Gear down and flaps 10 degrees

Rule of thumb: 1" = 7.5 kts or 100 fpm change


Hope that helps.
 
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