Seem to remember in its later life that the Autair hangar was used to maintain 146's for a short while but the problem was that the T tail of the 146 was slightly too tall to get it into the hangar.
Some cleaver dick designed a small ramp for the nose wheel so as the aircraft's nose wheel went up the ramp the tail dropped by the required inches thus allowing it into the hangar.
Only airline I can think of would be Debonair.