How many Piper PA-11s are registered in the US?

440, in the FAA aircraft registry.

When was the Piper PA-11 built?

From about 1946 to 1956. Half of those registered today were built by 1947.

What engine does the Piper PA-11 have?

Most have the Continental C90 (45% of those registered); others have the Continental A65, Continental C85, Lycoming O-235, Continental O-200.

How many accidents has the Piper PA-11 had?

22 in the NTSB's database since 2008, 6 of them fatal. The most common defining event was loss of control in flight. These are counts, not rates: how many hours the fleet flew is not published.

How many Airworthiness Directives does the Piper PA-11 have?

10 current ADs name the PA-11 airframe, 0 of them with a repeat action, and 27 more name its engines. Whether each applies to one aircraft depends on its serial number and installed equipment.

Ownership guide

Piper PA-11

440 registered in the US, built from about 1946 to 1956, 2 seats, most with the Continental C90. Its Airworthiness Directives, its engines', and what to check before buying one.

The fleet

Registered in the US: 440
Built: 1946 to 1956
Half built by: 1947
Seats: 2
Engine type: Piston
Most common engine: Continental C90

Engines installed

Continental C90197 aircraft (45%) · 5 ADs, 0 with a repeat action
Continental A6595 aircraft (22%)
Continental C8567 aircraft (15%) · 4 ADs, 0 with a repeat action
Lycoming O-23525 aircraft (6%) · 10 ADs, 1 with a repeat action
Continental O-20010 aircraft (2%) · 8 ADs, 0 with a repeat action

From the FAA aircraft registry, rebuilt daily. Years are those recorded on each registration.

Airworthiness Directives

10 current ADs name the PA-11 airframe, 0 with a repeat action; 2 more were superseded. Its engines carry 27 more. 4 equipment ADs name the model.

No current airframe AD mentions a repeat action.

Every AD for the Piper PA-11

Accident record

22 accidents since 2008, 6 fatal (10 people killed in them, a midair counting both aircraft), 2 aircraft destroyed.

What happened

Loss of control in flight5
Loss of control on ground5
Nose over/nose down3
Low altitude operation/event2
Aerodynamic stall/spin2
Collision during takeoff/land1

Phase of flight

Landing8
Maneuvering4
Taxi2
Takeoff2
Approach2

The latest

Date	Where	What happened	Injuries	NTSB number
2026-05-16	Susitna, AK	Taxi: Nose over/nose down	None	ANC26LA041
2025-09-10	Lake louise, AK	Takeoff: Loss of control in flight	Serious	ANC25LA103
2024-10-19	Rexburg, ID	Approach: Collision during takeoff/land	Serious	WPR25LA021
2024-03-09	Death valley, CA	Landing: Loss of control on ground	None	WPR24LA107
2019-06-16	Copperopolis, CA	Maneuvering: Low altitude operation/event	Fatal	WPR19FA173
2019-06-05	Paducah, TX	Landing: Loss of control on ground	None	GAA19CA317

From the NTSB's aviation accident database, refreshed monthly; accidents only, homebuilts left out. Counts, not rates: nobody publishes how many hours each model flies, and a training fleet flies far more than a private one. Look up any case by its number in the NTSB's CAROL.

What it costs to run

Per hour flown

Hours flown a yearhr/yrFuel burngal/hrTypical cruise; your POH and how you fly decide it.Fuel price$/galEngine overhaul$A quote from an engine shop.Hours to overhaulhrThe engine maker's published time between overhauls.Maintenance reserve$/hrEverything else that wears: tires, brakes, avionics, the unexpected.

Per year, flown or not

Insurance$/yrHangar or tiedown$/yrAnnual inspection$/yrLoan payments$/yrEverything else$/yrSubscriptions, database updates, the property tax some states charge.

Fuel: $0/hr
Engine reserve: $0/hr
A year: $0
All in, per hour: $0/hr

Filled in for a Piper PA-11 with the Continental C90: the engine maker's published overhaul time. Everything else is yours to fill in: insurance, hangar and overhaul prices vary too much by pilot, airport and shop for a default to mean anything. Nothing you type leaves this page.

Before you buy one

Run its N-number through the AD check: every AD that names its airframe and engine, as a checklist to take to the logbooks.
For each repeat-action AD, find the last compliance in the logbooks and when the next one is due.
Compare the engine's time since overhaul with its maker's published overhaul time, and look for the reason behind any long gap in flying.
4 equipment ADs name the PA-11 (a muffler, a seat belt, a display): find out which of that equipment is installed.
Check the registration, the airworthiness certificate and the date of the last annual inspection.
Work out the sales or use tax your state will charge with the aircraft tax calculator.

Questions

How many Piper PA-11s are registered in the US?: 440, in the FAA aircraft registry.
When was the Piper PA-11 built?: From about 1946 to 1956. Half of those registered today were built by 1947.
What engine does the Piper PA-11 have?: Most have the Continental C90 (45% of those registered); others have the Continental A65, Continental C85, Lycoming O-235, Continental O-200.
How many accidents has the Piper PA-11 had?: 22 in the NTSB's database since 2008, 6 of them fatal. The most common defining event was loss of control in flight. These are counts, not rates: how many hours the fleet flew is not published.
How many Airworthiness Directives does the Piper PA-11 have?: 10 current ADs name the PA-11 airframe, 0 of them with a repeat action, and 27 more name its engines. Whether each applies to one aircraft depends on its serial number and installed equipment.

Figures from the FAA aircraft registry and the FAA's Airworthiness Directives, rebuilt daily. An AD listed for a model is one to read; whether it applies to one aircraft depends on its serial number, equipment and records.