How many Aeronca 11ACs are registered in the US?

591, in the FAA aircraft registry.

When was the Aeronca 11AC built?

From about 1946 to 1951. Half of those registered today were built by 1946.

What engine does the Aeronca 11AC have?

Most have the Continental A65 (86% of those registered); others have the Continental C85, Continental A75.

How many accidents has the Aeronca 11AC had?

32 in the NTSB's database since 2009, 2 of them fatal. The most common defining event was loss of control on ground. These are counts, not rates: how many hours the fleet flew is not published.

How many Airworthiness Directives does the Aeronca 11AC have?

8 current ADs name the 11AC airframe, 1 of them with a repeat action, and 5 more name its engines. Whether each applies to one aircraft depends on its serial number and installed equipment.

Ownership guide

Aeronca 11AC Chief

591 registered in the US, built from about 1946 to 1951, 2 seats, most with the Continental A65. Its Airworthiness Directives, its engines', and what to check before buying one.

The fleet

Registered in the US: 591
Built: 1946 to 1951
Half built by: 1946
Seats: 2
Engine type: Piston
Most common engine: Continental A65

Engines installed

Continental A65506 aircraft (86%)
Continental C8527 aircraft (5%) · 4 ADs, 0 with a repeat action
Continental A7519 aircraft (3%) · 1 ADs, 0 with a repeat action

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

Airworthiness Directives

8 current ADs name the 11AC airframe, 1 with a repeat action; 1 more were superseded. Its engines carry 5 more. 3 equipment ADs name the model.

The ones that come back

ADs with a repeat action: an inspection or replacement at an interval, for as long as the AD applies. These are the airworthiness costs an owner keeps paying.

2000-25-02 R1American Champion Aircraft Corporation 7, 8, and 11 Series AirplanesAirplaneSupersedes 2000-25-02Repeat actionJun 6, 2001

Every AD for the Aeronca 11AC

Accident record

32 accidents since 2009, 2 fatal (4 people killed in them, a midair counting both aircraft), 1 aircraft destroyed.

What happened

Loss of control on ground11
Fuel related4
Loss of control in flight3
System or component failure (not the engine)2
Fuel exhaustion1
Powerplant sys/comp failure1

Phase of flight

Landing9
Enroute7
Takeoff5
Approach4
Maneuvering3

The latest

Date	Where	What happened	Injuries	NTSB number
2025-09-29	Longmont, CO	Enroute: Fuel exhaustion	None	CEN25LA403
2024-07-27	Winchester, CA	Enroute: Powerplant sys/comp failure	None	WPR24LA261
2024-06-01	Geneseo, NY	Takeoff: Loss of control on ground	None	ERA24LA238
2024-03-31	Conyers, GA	Takeoff: Runway excursion	Minor	ERA24LA183
2023-09-16	Apple, ID	Enroute: Fuel starvation	Minor	WPR23LA346
2023-06-23	Pence springs, WV	Maneuvering: Fuel related	None	ERA23LA275

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 Aeronca 11AC with the Continental A65: 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 (1 on the airframe), 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.
3 equipment ADs name the 11AC (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 Aeronca 11ACs are registered in the US?: 591, in the FAA aircraft registry.
When was the Aeronca 11AC built?: From about 1946 to 1951. Half of those registered today were built by 1946.
What engine does the Aeronca 11AC have?: Most have the Continental A65 (86% of those registered); others have the Continental C85, Continental A75.
How many accidents has the Aeronca 11AC had?: 32 in the NTSB's database since 2009, 2 of them fatal. The most common defining event was loss of control on ground. These are counts, not rates: how many hours the fleet flew is not published.
How many Airworthiness Directives does the Aeronca 11AC have?: 8 current ADs name the 11AC airframe, 1 of them with a repeat action, and 5 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.