Get extra lift from AOPA. Start your free membership trial today! Click here

Mooney M20


Most pilots would say they like and enjoy their airplanes, while still others would profess to nothing less than a passionate love affair. Forget the cost of flying, the commitment to maintenance and pilot proficiency, or any individual shortcomings of the make and model. For these owners, the airplane experience is the ideal combination of a lust for flying and the stewardship of a finely honed machine, a relationship guaranteed to swell the heart at its mere mention.

And then there are the Mooney owners.

Few marques seem to call together such a diverse group of fanatics as Mooney. Arguments often fly between Mooney types and, well, everyone else: They are almost always spirited, occasionally caustic, and offer some interesting insight into the psyche of the Type-M personality. This psychological profile might read as follows: Wants to travel quickly, efficiently, no need to carry anvils. And while it's a bit far-fetched to say all Mooneys are fast and fuel-thrifty — and to say that none is a full-seats, full-fuel affair — the M20 line has distinguished itself as one that gets the most speed out of the least horsepower.

Philosophies aside, Mooney history is at once intriguing and frustrating. The company has been owned by several entities over the years, each one changing the model names and making changes both minor and major. A somewhat less tortured way to differentiate among the many models is to follow the numeric designations, like M20, M20A, and so on.

An outgrowth of the single-seat M18 Mite, the M20 series emerged in 1955 with a 150-horsepower Lycoming, constant-speed propeller, and an unusual combination of airframe materials. That first M20 model, like all those after, employs a steel-tube frame surrounding the cockpit, which is in turn sheathed by thin aluminum skins. In the early, straight-M20 model, the wing and tail both were wooden. These versions are becoming more and more rare because the wooden components require extensive inspections and often expensive maintenance. As such, keeping a wood Mooney alive could be cost-prohibitive, especially in light of the few mechanics who know how to or are willing to work on a "composite" Mooney; in fact, several prominent shops said they would not even touch a wood-wing, wood-tail model.

A metal tail came with the 1958 model, as did a 180-hp Lycoming, but the big change to the M20 came in 1961 with the B model, which sported a metal wing. It lasted one year and was followed in 1962 with the M20C, essentially the same airframe with a slightly different 180-hp Lycoming and its maximum gross weight boosted to 2,575 pounds from the B's 2,400-pound limit. This is the most common of the early Mooney models, largely because it remained in production through 1978, briefly sharing the showroom with a then-new and significantly improved M20J, the 201.

Looking for still more speed, Mooney bolted a fuel-injected 200-hp Lycoming onto the C model, and the M20E was born. Both the C- and E-model Mooneys are called the short bodies, to differentiate them from the M20F, brought out in 1967, which received a 10-inch cabin stretch.

Where the F had the E's 200-hp Lycoming, Mooney also flirted with the smaller engine hung on the longer cabin and christened it the M20G when the model debuted in 1968. The G didn't last two seasons, though; the bulk of the pre-201 Mooneys are divided among the short-body, small-engine M20C (with 1,680 registered), the short-body big-engine M20E (1,121 on the books), and the stretched, 200-hp M20F (930 in the Federal Aviation Administration's logs). For comparison, the FAA had just more than 2,500 of the 201, 231, 252, PFM, and TLS models registered

It's usually speed, not systems, Mooney lovers dwell upon. Owners of 180-hp, short-body airplanes say to count on a maximum cruise speed of 140 to 147 knots, with the company claiming 150 as the 75-percent-power cruise. With the smaller fuselage and the larger engine, the M20E is supposed to turn in nearly 160 knots at optimum altitude, although owners admit that 155 knots is about right for an unmodified airplane. The long-fuselage airplanes, by the way, are 4 to 6 knots slower.

Those Mooney owners also like to boast of range and endurance. In the early airplanes, fuel capacity is 48 gallons usable, which, at a typical fuel burn of 8.5 gallons per hour, provides 5.6 hours' endurance with no reserves. The last of the 200-hp airplanes had the larger 64-gallon tanks. Larger tanks can be fitted to either series.

Among the high points of the Mooney's handling qualities is excellent longitudinal stability. Trim it for an airspeed, and it tends to hold it without much work on the pilot's part. Most models made in the 1960s used what Mooney called "PC," or positive control. It was a simple vacuum-based wing leveler that was always on; you had to press a button on the control wheel to interrupt it for maneuvering.

Pitch trim is accomplished by moving the entire empennage just aft of the horizontal stabilizer's leading edge, which is why the trim is often a bit stiff — you're moving more than just a little tab back there, after all — and the electric trim in later models can be painfully slow. You'll notice this especially during deployment of the last third of the flaps; there's a strong nose-down pitching moment that should be countered with trim. Watch the go- around, too because you'll need a hefty push on the yoke to counteract the trim change with flap retraction.

If you decide to join the Mooney fraternity, two peripheral items should be considered. First, find a reputable Mooney shop; the airplanes are different in construction and maintenance than most makes, and you'll be financing some A&P's education if yours is the first Mooney he's seen in awhile. Second, get in touch with the Mooney Aircraft Pilots Association (210/525-8008). This is a group that can provide tremendous advice to the Mooney owner, hosts pilot proficiency programs, and can help with difficult-to-find parts.

Performance Summary

The M20J is a 4 place, all-metal, low wing, high performance, single-engine airplane, with retractable landing gear.

This airplane must be operated as a Normal Category Airplane, aerobatic maneuvers, including spins, are prohibited. The airplane is approved for day and night VFR/IFR when in accordance with F.A.R. 91 or F.A.R. 135.

The engine is a Lycoming Model IO-360-A3B6 and is rated at 200 hp at 2700 RPM. It is a four cylinder, direct drive, normally aspirated, air-cooled, horizontally opposed, fuel injected engine.

Fuel is carried in an integrally sealed section of the forward, inboard area of each wing. Total useable fuel capacity is 64 gallons. Both tanks have fuel level indicators (tabs) visible through the filler ports. These indicators show the 25-gallon level in each tank. Fuel feeds from one tank at a time to the selector valve and through the electric fuel pump enroute to the engine-driven pump and the fuel injector unit. The electric fuel pump is capable of supplying sufficient pressure and fuel flow for rated engine performance should the engine driven pump fail. Electro/mechanical fuel-level transmitters in the tanks operate the fuel gauges. Vents in each fuel tank allow for overflow and ventilation.

A 24 volt/10-ampere-hour storage battery and a 28 volt/70-ampere self-rectifying alternator supply electrical power for equipment operation. The voltage regulator adjusts alternator output to current load while maintaining a constant voltage level.


  1967 Mooney M20C 1986 Mooney M20K 1996 Mooney M20J
Model Lyc. O-360-A1D Cont. TSIO-360-MB1 Lyc. IO-360-A3B6
No. Cylinders 4 6 4
Displacement  361 cu. in. 360 cu. in. 361 cu. in.
HP 180 210 200
Carbureted Or Fuel Injected Carbureted Fuel Injected Fuel Injected
Fixed Pitch/ Constant Speed Propeller Constant Speed Constant Speed Constant Speed
Fuel Capacity 52 gallons 78.6 gallons 66.5 gallons
Min. Octane Fuel 100 100 100
Avg. Fuel Burn at 75% power in standard conditions per hour Unknown 12.4 gallons 10.3-12.5 gallons
Weights and Capacities:      
Takeoff/Landing Weight Normal Category 2,575 lbs. 2,900 lbs. 2,900 lbs.
Takeoff/Landing Weight Utility Category N/A N/A N/A
Standard Empty Weight 1,525 lbs. 1,800 lbs. Data Not Available
Max. Useful Load Normal Category 1,050 lbs. 1,100 lbs. Data Not Available
Max. Useful Load Utility Category N/A N/A N/A
Baggage Capacity 120 lbs. Baggage Area
Hat rack- Unknown
Cargo area- Unknown
120 lbs. Baggage Area
10 lbs. Hat rack
340 lbs. cargo area with rear seats folded down
120 lbs. Baggage Area
10 lbs. Hat rack
340 lbs. cargo area with rear seats folded down
Oil Capacity 8 quarts 8 quarts 8 quarts
Do Not Exceed Speed 164 Knots 195 KCAS 195 KCAS
Max. Structural Cruising Speed 130 Knots 174 KCAS 174 KCAS
Stall Speed Clean Unknown 61 KIAS 62 Knots
Stall Speed Landing Configuration Unknown 59 KIAS 58 Knots
Climb Best Rate 1010 FPM 1080 FPM 780 FPM
Wing Loading Unknown 16.6 lbs./sq. ft. 16.59 lbs./sq. ft.
Power Loading Unknown 13.8 lbs./hp 14.5 lbs./hp
Service Ceiling 17,200 ft. 28,000 ft. (Max Operating Altitude) Data Not Available