Cessna 177 Cardinal

The resulting aircraft featured newer technology such as a cantilever wing lacking the lift struts of previous models, and a new laminar flow airfoil.

The engineers resolved this problem by placing the pilot forward of the wing's leading edge, but that led to a too-far-forward center of gravity.

The forward CG situation still existed even with the lighter engine, so a stabilator was chosen, to provide sufficient elevator control authority at low airspeeds.

[1] Soon after delivery of the first Cardinals to customers there were reported incidents of pilot-induced oscillation (PIO) that alarmed Cessna enough that the factory initiated a priority program to eliminate the problem.

(apparently, this was possible if one closed his eyes, used full back-pressure on the wheel at the flare and then sat rigidly waiting for the crashing noises to subside).

[1] The solution, which was provided at no cost to all aircraft already delivered, was known as Operation "Cardinal Rule" and included a series of 23 inspection, installation, and modification instructions.

[1][8] In 1978, Cessna built a deluxe version of the 177B, the Cardinal Classic, with leather upholstery, a table for the rear passengers, and a 28-Volt electrical system.

[10] To offset the 145 lb (66 kg) increase in empty weight, much of which was from the electrically powered hydraulic gear mechanism, the 177RG had a 200 hp (149 kW) Lycoming IO-360 engine.

Designated Model 1023, a single 177B was modified with a 185 hp (138 kW) Wankel engine with a large three bladed 100 inch diameter propeller with a belt driven gear reduction unit and a fuselage-length exhaust canted upward.

Cardinal logo seen on many 177s and 177RGs
An original 1968 model fixed pitch 150 hp Cessna 177 Cardinal
Cessna 177B Cardinal
Cessna 177RG Cardinal
3-view line drawing of the Cessna 177 Cardinal
3-view line drawing of the Cessna 177 Cardinal