Beech 400a Type

[StaticWick]

Getting ready for school studying my limitations. Under Engine Speed Limitations...
[FONT=&quot]Idle N2 Turbine, Engine EFC ON......................................................52% minimum
[/FONT][FONT=&quot]Idle N2 Turbine, Engine EFC OFF, in non-icing conditions ................46% minimum [/FONT][FONT=&quot]

What's stand for EFC?
My King Air brain says Engine Fuel Control if that's it why?

and dose anybody got a quick formula for figuring TAS on the ground? (Specifically,pertaining to tire speeds? )

Thanks
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[DC8 Flyer]

Getting ready for school studying my limitations. Under Engine Speed Limitations...
[FONT=&quot]Idle N2 Turbine, Engine EFC ON......................................................52% minimum
[/FONT][FONT=&quot]Idle N2 Turbine, Engine EFC OFF, in non-icing conditions ................46% minimum [/FONT]

What's stand for EFC?
My King Air brain says Engine Fuel Control if that's it why?

and dose anybody got a quick formula for figuring TAS on the ground? (Specifically,pertaining to tire speeds? )

Thanks

EFC=Electronic Fuel Control maybe

TAS on the ground, well at sea lvl IAS=TAS on a standard day. I've always used 2% per thousand (10,000 = 20%) multiply that by your IAS and gives you a pretty close TAS.

Examples

FL300 = 60%
IAS = 290 Knots

.6*290 = 174
174+290 =464 KTAS

 

[StaticWick]

Good deal. Thanks for the help.

 

[MauleSkinner]

Getting ready for school studying my limitations. Under Engine Speed Limitations...
[FONT=&quot]Idle N2 Turbine, Engine EFC ON......................................................52% minimum
[/FONT][FONT=&quot]Idle N2 Turbine, Engine EFC OFF, in non-icing conditions ................46% minimum [/FONT]

What's stand for EFC?
My King Air brain says Engine Fuel Control if that's it why?

and dose anybody got a quick formula for figuring TAS on the ground? (Specifically,pertaining to tire speeds? )

Thanks

EFC is the electronic fuel controller...it basically fine-tunes the mechanical fuel controller (HMU in the Beechjet).

TAS on the ground, with respect to tire speeds, is ground speed.

Fly safe!

David