Cessna 172N skyhawk
 

Hi,
I looked into the manual of Cessna 172N to find the stall speed and they are in Calibrated Airspeed. Flap up power off is 50 knots and full flap is 40 knots. How can I convert them to Indicated airspeed?
Cheers

There's either a table or graph near the front of the performance section of the POH.

The use of CAS instead of IAS in Cessnas from the the 1960s and thereabouts was a daft thing to do and thankfully got knocked on the head in the early 70s.

G

Apart from the 172N, then - which were in production in the latish 70s!

On one aircraft I fly, VMCA is marked on the ASI as it's CAS, with an associated warning in the POH that this should be ignored as an IAS. Not sure how they came up with that one. (any suggestions as to a good reason?)

There was never a GOOD reason. Every possible explanation involves stupidity.

G