pitot tube
Not sure wether this is the exact place for my question but in the past I've been very happy with the awnsers I got for other questions so here goes.
Our company has two nearly identical cessna 172 skyhawks. The difference between them is that one has aux tanks and an Isham conversion which I think is not of any importance for my question.
While I was flying these two regularly I noticed at some stage that in cruise flight with same powersetting and same cruise speed that if I looked outside I could see a big difference between the angle of the pitot tube and the horizon. In SLF in one plane the pitot tube is parrallel with the horizon and in the other plane the angle is about 5 degrees. (When I put the pitot tube of the second plane parrallel I have about a 5 degree climb angle).
This struck me as a bity strange and since one can't adjust the pitot tube I was left wondering where this difference came from? Maybe you guys can enlighten me. Thanks a lot in advance.
Greets
Peter