Mooney M20 buyer's guide:
what the records reveal

The U.S. fleet at a glance

The FAA registry lists 6,174 Mooney M20 aircraft, built between 1956 and 2020. The largest concentrations are registered in TX (756), CA (628), FL (452). A large, active fleet works in a buyer's favor: parts supply, mechanic familiarity and comparable sale prices are all easier to establish than on a rare type.

Type specifications (FAA Type Certificate)

Representative type specifications — values can vary by serial/variant. Verify against the official FAA Type Certificate Data Sheet (drs.faa.gov, document 2A3).

Where this fleet reports maintenance difficulties

FAA Service Difficulty Reports are filed by mechanics and operators when a component fails or malfunctions in service. Across the Mooney M20 fleet, 346 reports have been filed against this type since 1995 — most airframes have zero reports on file, with a mean of 0.1 per airframe. The systems mechanics report most on this type:

• JASC 85 — Reciprocating Engine : 58 reports fleet-wide
• JASC 32 — Landing Gear : 50 reports fleet-wide
• JASC 74 — Ignition : 27 reports fleet-wide
• JASC 28 — Fuel : 23 reports fleet-wide
• JASC 71 — Powerplant : 21 reports fleet-wide

Filing is voluntary, so these figures understate reality — but the RELATIVE weight of each system is exactly where an experienced buyer points the pre-buy inspection first. Reconciliation note: 993 further reports filed under these registrations were excluded because the aircraft model declared in the report shows they belong to previous holders of the same N-numbers.

The accident record, in numbers

The NTSB database holds 135 accident or incident records serial-matched to Mooney M20 airframes in this fleet since 2008 — about 2.2 per 100 currently registered aircraft, of which 17 involved fatal injuries (most recent record: 2026). A further 9 records filed under the same N-numbers belong to different airframes (reused registrations) and are excluded.

Method: the denominator is the fleet currently on the FAA registry. Airframes destroyed and later deregistered leave that denominator, so this ratio understates lifetime accident history — read it as a fleet-profile indicator, not an accident rate. Fleet totals also reflect how the type is flown (training and commercial work versus private use), not just the machine itself. 1 record without a usable serial could not be verified and remain included.

Fleet-level counts tell you about the TYPE; what matters for your purchase is whether the specific airframe you are considering appears in that database — and U.S. registrations get reused, so a serial-number check matters. That per-aircraft lookup is exactly what a TailGuard report does.

Airworthiness directives to know about

11 airworthiness directives published since 1994 in our Federal Register database and matched to this type are currently open, including 3 recurring directives that must be re-complied with at set intervals. The full list of directives applicable to an older airframe is longer — build it at drs.faa.gov. The most recent in our database:

• AD 2023-02-04 recurring · effective 2023-02-13 — reports of the hybrid material elevator balance weight cracking
• AD 2021-10-17 · effective 2021-07-07 — reports of short circuit and arcing of the alternator main power cable in the engine compartment
• AD 2014-15-18 · effective 2014-08-20 — discovery of empennage attach fittings (Lugs) that do not meet the approved design dimensional requirements, which could result in possible reduction in fatigue
• AD 2012-05-09 · effective 2012-03-20 — We are issuing an airworthiness directive (AD) for all Mooney Aviation Company, Inc. (Mooney) Models M20B, M20C, M20D, M20E, M20F, M20G, M20J, M20K, M20L, M20M, M20R, M20S, and M20TN airplanes that supersedes an existing AD that is applicable to certain Model M20R and M20TN airplanes. The existing AD currently requires inspecting the tail pitch trim assembly for correct positioning and proper attachment and inspecting the Huck Bolt fasteners for proper security with repair as necessary for certain Models M20R and M20TN. That AD also requires sending the inspection results to the FAA and Mooney
• AD 2007-05-04 · effective 2007-04-09 — firewall insulation and upholstery being compressed between the fuselage tubu
• AD 2004-23-17 · effective 2004-12-01 — The FAA is adopting a new airworthiness directive (AD) to supersede Airworthiness Directive 91-03-15, which applies to certain Mooney Airplane Company, Inc., (Mooney) Model M20M airplanes. AD 91-03- 15 currently requires you to replace the tailpipe coupling with improved tailpipe coupling. Since we issued AD 91-03-15, a fire erupted in the lower left cockpit area on one of the airplanes affected by AD 91-03-15. The V-clamp that attaches the exhaust tailpipe to the turbocharger fell off, which allowed the exhaust tailpipe to detach from the turbocharger. Hot exhaust gases from the turbocharger

Superseded directives are excluded from these counts. Directives apply by type — no database can tell you whether a given airframe complied. Only its logbooks can, and that is the single most important paperwork check of your pre-buy.

Ownership turnover

Comparing monthly FAA registry snapshots from Aug 2023 to Jun 2026, 1,308 of the 6,174 observed Mooney M20 airframes — 21.2% — changed registrant at least once. This includes registrant-name changes that are not market sales — such as a transfer to an owner's LLC or trust — and newly delivered aircraft registered to their first buyer within the window. A recent ownership change is not a red flag by itself, but a rapid succession of owners deserves a direct question to the seller, and the registration timeline of the specific aircraft is worth reading before you negotiate.

Before you buy a Mooney M20

A records-driven starting checklist for this type — derived from the figures above, to hand to your mechanic:

1. Inspect the reciprocating engine closely — it is among the most-reported systems for this type in FAA Service Difficulty Reports (58 reports fleet-wide).
2. Inspect the landing gear closely — it is among the most-reported systems for this type in FAA Service Difficulty Reports (50 reports fleet-wide).
3. Inspect the ignition closely — it is among the most-reported systems for this type in FAA Service Difficulty Reports (27 reports fleet-wide).
4. Verify in the logbooks that the 3 recurring airworthiness directives matched to this type are signed off at the required intervals.
5. Confirm engine and airframe times against the logbooks and the most recent annual inspection.
6. Have a licensed A&P/IA perform a physical pre-purchase inspection — no records check replaces it.