Cessna has historically used model years like the U.S. automobile industry, with new models typically being introduced a few months prior to the actual calendar year. ; :The sole Model 142 prototype, registered N34258 (c/n 617), was built in 1957 as a
tricycle landing gear development of the
Cessna 140. Other changes included the addition of "
Para-Lift" flaps and squared wingtips and tail surfaces. The aircraft was powered by a
Continental O-200-A engine, was of an all-metal construction, and had a gross weight of . First flown on September 12, 1957, the aircraft was subsequently redesignated to
Model 150. 332 built. :Because of the higher gross weight with the same engine power, Cessna's claimed performance figures for the 150D and later models are worse than for earlier models: maximum and cruise speeds are reduced, range is shortened, takeoff and landing distances are lengthened, and climb rate and service ceiling are lower. Such changes are only to be expected, because performance is weight-dependent and is normally specified at maximum gross weight. Cruise performance may also have been lessened because the new rear window made the 150D's rear fuselage less well streamlined than the former "fastback" fuselage. :The 150D retained the straight tailfin and rudder of previous years. However, to lighten control loads,
aerodynamic balance horns were added to the rudder and the elevator. These horns also contained weights (mass balances) to eliminate any possible
control flutter that might be induced by the changed aerodynamics of the rear fuselage. :The 150D moved the heavy electrical battery from the previous rear location, behind the baggage compartment, to the front, just ahead of the engine firewall. It had a broader range for its
center of gravity than earlier models, which allowed more flexibility in loading. The 150D also had more permissive
airspeed limits for its never-exceed speed, its
maneuvering speed, and particularly its maximum flaps-extended speed, which was raised from to . :Partway through the 150D's production, an option was added for a heavy-duty nose landing gear with a larger 6.00×6 inch (150×150 mm) nosewheel; this had a tire whose tread was wider than standard but was only slightly larger in diameter. The folding torque links on this heavy-duty nose gear were also reversed, being mounted in front of the nosewheel strut instead of behind it. :A total of 686 aircraft were built; one prototype (c/n 644) ; :1966 model year with a new vertical tail that was swept back 35 degrees, with a short dorsal strake at its base, matching the styling of the
Cessna 172 and other models. The cabin doors were widened, with 23% more area, and while the old doors were tapered at the bottom, the new doors were square, making it easier to get in and out of the cabin. The new doors also had larger windows and better latches. The baggage compartment was extended aft to the bottom of the rear window, giving 50% more room, although its load limit remained at . The cabin floor was now flat, with no hump for routing control cables. The old manual flaps were replaced by electrically driven flaps activated by a switch on the instrument panel; other former floor controls (the elevator trim wheel and fuel shutoff valve) were now on a small vertical console beneath the panel. The electric flaps now had a flap position indicator above the left door. The 6.00×6 inch (150×150 mm) main wheels with large low-pressure tires were now standard rather than optional, and they had new brakes. The stall warning alert, previously an electric beeper, was now a pneumatic reed horn that would work even if electrical power failed. The pointed propeller
spinner and rear-view mirror options became standard for the Commuter and Trainer. Other newly standard features for the Commuter were dual controls (previously restricted to the Trainer), wheel speed fairings, and an electric heater for the
pitot tube and stall warning sensor. The old optional Patroller-type door (with an extra window in the lower half) was dropped along with the name "Patroller", though long-range fuel tanks were still offered. The courtesy light option was also discontinued. :Cessna greatly expanded 150 production for the 150F; a total of 3,000 of this model were produced. ; :1967 model year with the doors bowed outward to make the cabin about wider, and a lowered floor to add head room. Rubber
sound isolators were added to the engine cowling to reduce vibration and noise in the cabin. The cabin heating system now allowed heated air to be mixed with fresh air and had a new windshield defroster outlet. The instrument panel's layout was changed, and the
control yokes now had open tops. The stroke of the nosewheel's
oleo strut was shortened from to . Both of the old electrical generators, 20-ampere and 35-ampere, were replaced by a new 60-ampere
alternator. The anti-collision beacon (standard on the Commuter, optional elsewhere) was changed from the old motorized revolving type to a new flashing type. Separately adjustable bucket seats were now standard for the Commuter and could be either fabric or vinyl-covered. The Commuter got standard wall-to-wall carpet. Tinted windows were a new option. The 150G was also the first Cessna 150 variant certified for floats. For floatplane operation it used a larger diameter propeller and had a gross weight of . :A total of 2,666 150G models were built by Cessna; one prototype (c/n 649) Unlike the F150F, which was powered by a Continental-built engine, the engines of the F150G and subsequent Reims-built F150s were license-built by
Rolls-Royce. The flap position indicator was now vertical, on the left front doorpost, and the center console was narrowed to improve legroom. A new wing leveler option could automatically control the ailerons and rudder to keep the aircraft on course. 2,110 were built, plus one prototype converted from the 150G prototype (c/n 649). Reims also built 170 aircraft as the
F150H. The new starter was more "car-like" but not as reliable as the old one and also more expensive to repair. New options were a map light under the control wheel and a ground power plug, and extra steps and handles were added to the floatplane version to make fueling easier. 1,820 built, plus 140 built by Reims as the
F150J. a ground-adjustable rudder
trim tab, a new molded cabin
headliner, and new seats with greater legroom. New options included tinted dual overhead skylights for upward visibility, extra steps and handles to aid in fueling, whitewall tires, and "conically cambered" wingtips that curved downward toward the trailing edge. On the 150K Commuter, the cambered wingtips were standard. :In addition to the standard 150K, the 1970 model year introduced a version certified for
aerobatics as the
A150K Aerobat. The Aerobat retained the normal 150's
Continental O-200 engine, but structurally it was stronger than the normal 150K, being rated for
load factors of +6.0/−3.0
g (vs. +4.4/–1.76
g for the normal 150K) and having higher limits for its
maneuvering and never-exceed speeds. Other Aerobat standard features included the dual skylights already mentioned, shoulder harnesses for both occupants, removable seat backs and cushions to make room for a back-pack or seat-pack parachute, jettisonable doors, and a special checkerboard paint scheme; there was also an optional accelerometer for the instrument panel. The Aerobat was approved for a variety of maneuvers that were not permitted for normal 150s, but it still had the normal 150's gravity-fed fuel system, so sustained inverted flight was not possible. A 1970 A150K Aerobat cost $12,000 as opposed to the $11,450 price for a 150K Commuter model. :A total of 1101 were built; 875 as the 150K and 226 as the A150K. ; :()
Royal Thai Armed Forces designation for the 150H. ==Modifications available==