The Cessna 120-140 Association Forum

I'm getting a little push back on the field approval for the Grove axles and 8.50 tires from the FSDO. Has anyone hired a DER to write up approved data? I spoke with one who quoted me $250 for the axles and $250 for the tires. It seems reasonable to me, but I'm new to this and wasn't sure, is this in line with anyone's experience?

Thanks as always.

That is very reasonable pricing. DER's can cost Zillions to have them engineer "fixes" for you.

Terry Bowden did mine I do not know who you are using he is A nice guy easy to work with