Tomahawk
The Tomahawk gets its nicknames for valid reasons. Piper decided to change the aircraft design after the FAA certified it, and never bothered to have it retested and recertified. I really don't know how they got away with this.
NTSB:
"Originally, the wing was designed using the NASA GAW-1 airfoil and 11 full ribs from wingtip to wing root on each side...The reconfigured airplane retained the same airfoil but had its wing rib numbers reduced to four full sized ribs..."
"The design engineer said that removing wing ribs and changing the spar design would make the wing less rigid, i.e., "soften" the wing...the softened wing structure could change the airfoil shape, making the wing a new and unknown commodity in stalls and spins. He said he had inspected a PA-38 wing and found it to be very soft, and able to be torsionally twisted without substantial effort. "
"The aerodynamic performance of a GAW-1 wing is very sensitive to airfoil shape. If the shape became distorted, the performance would rapidly deteriorate...the use of a flexible surface representation of the profile sensitive GAW-1 design opens a Pandora's box regarding its performance. The effects of...[a] soft GAW-1 wing in stalls and spins would be impossible to resolve in a conventional flight test program."'
http://www.ntsb.gov/ntsb/brief2.asp?ev_id=20001206X00857&ntsbno=CHI94FA097&akey=1
If I were to pick one airplane as a dangerous trainer, that would be it. Definitely not a C152. Some of you may want to lose some weight.
Incidentally, I don't know what dougal means by the use of a 172 cutting training time by 15 hours. It is common for the FBO I learned to fly at, which uses 152s, to finish a student with flight time in the 40s. I soloed in a 152 at 12.5 hours and took my checkride at 45. So if I used a 172 I would have been ready at 30? And I could have soloed at (negative) -2.5 hours? Hrmmm, something is wrong with this picture.