1957 C172 Pitot mast alignment question
Hi - I'm a new owner - The airspeed does not come alive on my 1957 C172 until after I have rotated, and continues to indicate a lower airspeed throughout the flight. On the older models, the pitot mast is only a piece of tubing sticking out of the front of the wing. I suspect that it might be bent slightly out of the airstream enough to read wrong. Should this tube be parallel with the chord line of the wing? Also, it comes out of the wing through an oblong opening that allows approximately an 1/8" to 1/4" of play. Is that common, or should there be a grommet? Do those with older models have any experience with this? Thank you for your thoughts!