Mooney · 1963–1966
Mooney M20D Master (1963-1966)
Specifications
Cruise
130KTAS
Range
600nm
Seats
4
Useful Load
1085lbs
Full-fuel payload
773lbs
Fuel Burn
9.5gph
Fuel Cap.
52gal
MPG
15.7mpg
Stall (Vs0)
52KIAS
T/O roll
850ft
Ldg roll
480ft
Power
180hp
Engine
piston single
Gear
Fixed
IFR
Yes
Category
certified
Pricing
Typical
$55k
Range
$35k – $75k
Annual all-in
~$12k/yr
All-in estimate at ~100 flying hours a year — fuel, annual inspection, engine reserve, insurance, and hangar. It scales with your actual hours, and insurance and hangar vary most by region and pilot.
Cost to own — estimate
Set your yearly hours and local fuel price. Fixed costs (insurance, hangar, annual inspection) don't change with hours; fuel and the engine reserve do.
- Fuel (9.5 gph)
- $6,175
- Engine reserve (toward overhaul)
- $1,250
- Fixed (insurance, hangar, annual, subscriptions)
- $4,575
- Total per year
- $12,000
- Per flight hour
- $120
- Miles flown / year (at cruise)
- 14,960 mi
- Cost per mile
- $0.80/mi
Estimate, not a quote — insurance and hangar (the fixed bucket) vary most by region and pilot. Anchored to our model figure at 100 hrs and $6.50/gal.
Strengths
- Only fixed-gear Mooney ever made — rare collector appeal
- Lowest insurance and maintenance costs in Mooney lineup (no retractable gear hydraulics)
- 130 KTAS cruise adequate for 4-seat trainer market
- Useful load of 1,085 lbs supports typical mission profiles
Weaknesses
- Only ~79 produced (1963-1966); parts and mechanic familiarity scarce
- Fixed gear kills speed advantage Mooney brand is known for vs. Cherokee/172
- Most examples field-converted to retractable M20C; unconverted airframes extremely rare
- Higher purchase price than comparable fixed-gear competitors (Cherokee 180, Cessna 172)
Overview
The 1963 Mooney M20D Master is the only fixed-gear Mooney ever produced -- a market experiment where Mooney converted the retractable M20C/E into a fixed-gear airframe to compete with the Piper Cherokee and Cessna 172 in the budget 4-seat trainer market. Production: approximately 79 units across 1963-1966, making it the rarest M20 variant by a wide margin.
The M20D failed in the market for predictable reasons: fixed gear defeated the purpose of a Mooney. Without the retractable gear's drag reduction, the M20D cruises at only 130 KTAS -- faster than a 172 but barely faster than a Cherokee 180, and at a higher purchase and operating cost. Mooney discontinued the variant in 1966 and refocused on retractable models.
The Conversion
Most M20Ds have been field-converted to M20C retractable configuration under a Mooney-approved STC. The conversion involves:
- Installing retractable main and nose gear
- Replacing fixed-gear wheel fairings with gear doors
- Modifying the wing structure for gear retraction
- Updating the aircraft type plate to reflect M20D-converted-to-M20C status
Of the original ~79 M20D production, fewer than 20 unconverted examples remain in service as fixed-gear airplanes. The remainder fly as field-modified M20Cs.
Performance (Unconverted M20D)
- Cruise: 130 KTAS at 7,500 ft (75% power)
- Climb: 925 FPM at gross
- Fuel burn: 9.5 GPH cruise
- Range: 600 NM with reserves at 52 gal fuel
- Useful load: 1,085 lbs
The M20D's only practical advantage over the retractable M20C is lower insurance and maintenance cost (no gear hydraulics to maintain). For pilots without complex/HP endorsements, the M20D is the cheapest Mooney to insure and operate.
Valuation Factors
| Configuration | Price Range |
|---|---|
| M20D unconverted (rare) | $35,000-$60,000 |
| M20D converted to M20C (most examples) | $55,000-$100,000 (per M20C pricing) |
Unconverted M20Ds appeal to a narrow collector market and pilots seeking the cheapest Mooney to insure. Converted M20Ds trade at standard M20C prices.
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ADs & Common Problems
- Conversion documentation: Verify M20D-to-M20C conversion paperwork including STC compliance and airworthiness directive completion.
- Wing structure inspection: M20D-to-M20C conversion involves wing modifications; verify post-conversion structural integrity.
- Universal Mooney concerns: Steel tube tail rust, fuel bladders, O-360 cylinder condition.
- Rarity premium: Don't pay more than $60,000 for an unconverted M20D unless it has exceptional restoration condition.
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