Originally Posted by Ron Stewart
The K model is the only aerobat that regains it aerobatic certification due to a paperwork mistake from what I have been told.

Just because it's legal, doesn't mean it's right.

"There were a couple of 150hp conversions that were later to receive a Supplemental Type Certificate in the USA, and the author was invited to fly one at nearby Agusta Airport. Before cranking up for a solo flight, the owner, Galen Means, suggested I might want to try a 6 turn spin. Although I had no parachute, I naively attempted one and noticed immediately that this was no longer a docile C-150. The extra inertia effects from the larger engine and the battery relocated to the tailcone (for balance) caused a noticeably flatter spin attitude. Sensing this impending danger, I broke off the prolonged spin at four turns, and noted a rather sluggish recovery." Later, I discovered that their test pilot had not yet gone this far in their spin program.
-William D. Thompson Cessna Test Pilot from his book Cessna Wings for the World

He was later told by an FAA rep that many large-engine A150 conversions are not approved for spins.


Are non-aerobat 150-150s and 180-150s prohibited from intentional spins?

Mark Buchner
East Coast Outkast Fearless Leader
and Cessna 150-152 Fly-In Foundation Director of Operations

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