Weight an Balance Queston for AVCANADA

Tholl · Post by **Tholl** » Sun Dec 11, 2005 5:22 pm

Just a quick question... I'm doing an question on a W&B on a super king air....Just need someone to explain what the LMAC figure is for the %MAC formula. Thanks guys!

%MAC= (ARM"-LMAC/MAC")*100

CG is 179"
MAC is from 160" to 240" AFT of the Datum, whats the CG in terms of %MAC?

And the main reason I wanted to post this was to know if this question could be something I see on the commercial exam?
Thanks
-Tholl

Snowgoose · Post by **Snowgoose** » Sun Dec 11, 2005 5:27 pm

MAC = (CG - LEMAC)/(TEMAC-LEMAC)*100%

MAC = (179-160)/(240-160)*100%

MAC = 23.75%

MAC= Mean aerodynamic chord
LEMAC = leading edge MAC
TEMAC = Trailing Edge MAC

Snowgoose · Post by **Snowgoose** » Sun Dec 11, 2005 5:29 pm

Might be a question more on the ATPL or IATRA than the commercial

Tholl · Post by **Tholl** » Sun Dec 11, 2005 5:32 pm

Thanks Snowgoose!
I think I got the right awnser...24%
I actually just used my CX-2 for that one! But it does help to know what they all mean! Thanks again
-Tholl

C-GPFG · Post by **C-GPFG** » Tue Dec 13, 2005 6:26 am

Good chance it will be on the SARON. Not asked on the CPAER.

co-joe · Post by **co-joe** » Tue Dec 13, 2005 1:21 pm

Study that one cold young grasshopper. We ALWAYS do a %MAC calculation on the super King Air before going flying where I work.

Redneck_pilot86 · Post by **Redneck_pilot86** » Tue Dec 13, 2005 3:27 pm

Just finished my commercial written, there were no questions on that, only 2 weight and balance questions at all actually.