Piper J-3 Cub

The gross-weight rows are the important ones and they are not cosmetic. A-691 gives the J3C-65 three different maximum weights depending on serial number and on which of two Piper drawing sets has been embodied. The page stores 1,220 lb because Section IV grants it outright to "Serial Nos. 10339 and up and 2356-A and up", and because 6,320 airframes came off the line in 1946 alone — but a 1940 Cub is a 1,100 lb airplane unless its logbooks show the strut and gear revisions, and that is 120 lb of useful load. A-691 gives serial ranges rather than counts, so no percentage is claimed here.

Every figure in this section is single-sourced and hedged in its original. The J-3 is not a performance airplane in any conventional sense; its virtues are predictability, simplicity and the ability to operate from absurdly short strips at absurdly low speeds.

Cruise, and a disagreement. Aviation Consumer says "Typical cruise speed is about 70 MPH with the 65 HP and 75 HP engines while those sporting the 85 horse motors can streak along at 80 MPH" — 70 mph is 61 knots, and it is scoped explicitly to the engine this page describes. Budd Davisson, flying one for Sport Aviation in 1997, writes "be suspicious of any speed above 80 mph indicated. 75 mph is a pretty standard Cub cross-country speed." The catalogue follows Aviation Consumer, because Davisson's figure is expressly indicated and this field holds true airspeed, and because his 75 mph is the more optimistic of the two. Plan on somewhere between the two and remember that any meaningful headwind turns a cross-country into an endurance test.

Range is a practical figure, not a book figure. Aviation Consumer: "With only 12 gallons aboard, they arent continent spanners, either. Or even state spanners, for that matter. Practical unrefuled range is about 150 miles, after which youll want to get out a stretch anyway." That is 130 nautical miles and it already has whatever reserve the writer thought sensible folded into it. Twelve gallons at the maximum 5 gph is 2.4 hours; 150 statute miles at 70 mph is 2.1 hours. The two reconcile, which is the only check available.

The fuel burn is a ceiling. AOPA says the airplane "burns at the very most 5 gallons per hour — and can be coaxed to sip less", and its own specification table marks the 75%-power burn "Unknown". Budget the 5; expect less.

Climb, and a second disagreement. AOPA's table says 540 fpm. Davisson, with one aboard on a 75-degree day, reports "as much as 400-500 fpm". Those are not really in conflict — one is a specification figure and one is an observation — but on a warm day at gross weight, plan on Davisson's. At 5,000 ft density altitude expect materially less again: the 65 hp engine has no margin at altitude and this is the airplane's genuine limitation.

The stall is 30 knots and there is only one of them. The J-3 has no flaps, so the clean and landing-configuration stalls are the same number. Aviation Consumer describes it loosely — "The fat wing delivers stall speeds somewhere around 40 MPH range" — but gives no weight or CG, so AOPA's 30 knots is what the page stores. The stall itself is benign: the Cub mushes and nods rather than breaking sharply, which is precisely why it was chosen as a mass-market trainer.

And the benign stall is part of a genuine safety problem. Aviation Consumer: "the Cub has a very high stall/spin fatality rate, probably because it invites pilots to horse around at low altitude, where recovery is unlikely." A docile stall in an airplane that tempts its pilot to fly slow and low is not the same thing as a safe one.

No takeoff or landing distance is published anywhere. The Cub's short-field ability is real and celebrated, and this catalogue will not put a number on it that no document supports. Davisson's account of what it feels like is the best available: "Even on a calm day, the Cub will fly off the ground long before you can get in serious trouble. If there is just a few knots of wind on the nose, it'll leave the ground almost as soon as the tail is up. Solo it leaps off. Dual it takes much longer. The airplane really reacts to extra weight."

The tension is between a 540 lb useful load and a 12-gallon tank. The J-3 is fuel-limited far more than weight-limited, which is the reverse of most airplanes in this catalogue.

Scenario 1: Solo (maximum range)

Solo, the Cub has enormous weight margin and no range. This is the training and local-flying configuration, and the spare 268 lb is best spent by simply not carrying it — a light Cub climbs noticeably better.

Scenario 2: Two occupants

Two average adults, full fuel and the full baggage allowance leaves 68 lb. Two large adults at 200 lb each exceed 1,220 lb gross before the baggage goes in. This is a real constraint every Cub pilot manages on every flight.

Scenario 3: Two heavy occupants, reduced fuel

Fuel comes out to make the weight legal, and with it goes any pretense of cross-country utility.

The weight reality, and the serial number that changes it

The J-3 was designed when the standard pilot weighed 170 lb. Every scenario above assumes the 1,220 lb gross weight, which A-691 grants outright only to S/N 10339 and up and to the 2356-A series. On a 1,100 lb airframe, subtract 120 lb from every "remaining useful load" figure above — which turns Scenario 2 into an overweight airplane. Check the serial number and the logbooks for the Piper Dwg. 12352 / 13233 / 21642 strut revision and the Dwg. 31472 / 31423 gear revision before you plan a flight in one.

Flight Training (7/10): Among history's most effective primary trainers, and still excellent for tailwheel transition. Tandem seating, stick and rudder, and forgiving slow-speed handling teach coordination that a tricycle-gear trainer cannot — Davisson: "The airplane has noticeably adverse yaw and the pilot who doesn't coordinate will polish the bottom of his jeans smooth. That's one of the things that makes it such a great trainer." Docked points because no electrical system means no radios and no instruments: uncontrolled fields and VFR basics only. For the tailwheel endorsement alone it is a 10.

Backcountry (6/10): The spiritual ancestor of all backcountry flying, and Cubs do reach remote strips. But 65 hp limits payload severely: solo with light gear is realistic, two occupants plus camping equipment is not. The PA-12 Super Cruiser and Cessna 170 are more practical. With a certificated C-85 or C-90 under Item 311C it improves substantially, which is precisely why so many have one.

Business Travel (1/10): No electrical system, no radios, 20 lb of baggage, a 61-knot cruise and two tandem seats.

Aerobatics (1/10): Not approved. A-691 grants no aerobatic category to Section IV. The Reed clipped-wing conversion is a different airplane and is approved for loops, rolls and spins; a standard J-3 is not.

Cross-Country (2/10): 12 gallons, 61 knots, no radio and 130 nm of practical range. People have flown Cubs coast to coast. It is an adventure, not transportation.

Cargo Hauling (1/10): A-691 allows 20 lb of baggage at station +49. That is the whole of it.

Local Fun (10/10): This is the airplane's reason for being, and nothing in the catalogue scores higher.

Surveying (2/10): Slow is an advantage; no electrical system, no panel space and tandem seating are not.

Most J-3s have no electrical system, and that is a feature rather than a deficiency. Three approaches:

Purist ($0): Hand-prop start, no transponder, no panel radio. A handheld (Icom A25) and an iPad running ForeFlight. This is how most Cubs are flown and it works perfectly at uncontrolled grass strips. ADS-B Out is not required below 10,000 ft MSL outside Mode C veils and Class B/C airspace.

Minimal electrical ($2,000-$5,000): A lightweight battery or alternator system supporting one COM and a wingtip ADS-B Out device. Opens up towered fields and Mode C veils.

Panel-mounted ($5,000-$12,000): A full electrical system with a COM, a transponder with ADS-B Out and perhaps a GPS. Uncommon, and it changes the character of the airplane.

The constraint is weight, and on a 540 lb useful load every pound of avionics is a pound less of pilot, passenger or fuel.

The engine options are in the certificate table above and are not STCs. Beyond those:

No STC number is quoted anywhere on this page, because no source read in this pass gives one. A previous version named specific SA-numbers; they are removed rather than repeated.

Parts Availability -- Excellent

AOPA states it plainly: "While the manufacturer no longer fabricates J-3s or Cub parts, the airplane is well supported by Univair and The Wag-Aero Group, which manufacture and vend parts for just about the entire airplane." With 14,125 built and an enormous salvage pool behind them, this is the best-supported vintage airplane in the catalogue.

Mechanic Familiarity -- Common

Any A&P with fabric experience can work on a J-3: steel tube fuselage, fabric, bungee gear, mechanical brakes, a small Continental with magneto ignition. No hydraulics, no retractable gear, no constant-speed propeller, usually no electrical system.

Annual Cost Range

The J-3 remains one of the least expensive certified airplanes to own. The overhaul reserve line is deliberately expressed per hour against a band rather than a TBO, because no TBO exists for the A-65.

Expensive Maintenance Items

• Fabric re-cover. The largest expense in a Cub's life, and it comes around every 15-25 years depending on covering system and whether it is hangared.
• Engine overhaul. $16,000 for an A-65 per the house reference; more for a C-85 or C-90, which Davisson notes are getting harder to overhaul at all.
• Wing lift struts, if AD 2015-08-04 cannot be answered by inspection.
• Rudder replacement, AD 2025-02-11: $3,000 on the FAA's own estimate.

These are asking prices observed on 7 September 2026, not transaction prices — no Vref or Aircraft Bluebook value is obtainable without a subscription. The J-3 market is emotionally driven to a degree unusual in general aviation.

Eight priced listings of fifteen active on AeroGurus, ranging $55,000 to $98,240 with a median of $74,000. The four US listings were $55,000 (California), $64,700 (Virginia), $77,500 (Nebraska) and $80,000 (Wisconsin); the cheaper listings on the page were an Irish project at $41,839 and an Italian airplane at $44,163, and are excluded. Controller.com had no J-3 listing at all on that date.

Recently-sold prices, from the same source, run higher than the stored typical: $78,811, $87,210 and $90,000 for three of four transactions. Read the stored $64,000 as a conservative floor for a good airplane rather than a midpoint.

One historical figure worth having, and it does not reconcile. Aviation Consumer, 25 August 2021: "The Summer 2021 Aircraft Bluebook suggests that a 1947 J-3 has an average retail value of $20,000 ... Expert restorations can increase that value more than 50 percent. On the other hand, tired Cubs begging for love may be worth half of Bluebook value." Against a 2026 median asking of $71,100 that is a factor of three and a half in five years. Either the classic market has run very hard — which the same article anticipated, "the market may be changing" — or the Bluebook sits far below asking for this type. A subscription would settle it and nothing else will.

Key Value Drivers

• Fabric condition. Fresh Poly-Fiber or Ceconite against marginal fabric is the largest single swing in the price of a Cub.
• Engine. Aviation Consumer puts the larger Continentals at "$500 to $1,000" of value in its era; the market spread is far wider now, and a certificated C-85 or C-90 is worth real money over an A-65. The Lycoming and Franklin 65s "carry a price penalty of $2000".
• Metal spars over wood, for the reduced inspection burden.
• Sealed struts, which answer the current wing AD.
• AD 2025-02-11 compliance. A rudder already replaced with a 4130N post is $3,000 of work the buyer does not have to do, and this is new enough that most sellers have not done it.
• Serial number. An airframe eligible for 1,220 lb outright is worth more than one that needs two drawing sets embodied to get there.
• Provenance. L-4 history, documented chain of ownership, original data plate.
• Color. Cub Yellow commands a premium, purely on sentiment. It is real.

Airworthiness Directives

Every number below comes from the FAA's own AD index (adlistpipercubs), which gives each AD's subject and its applicable-model list in the regulator's words. The page's previous "AD 47-30-02" and "AD 85-02-01" do not exist and have been removed.

AD 2025-02-11 — rudder posts — is the live one, and it is new. Effective 20 March 2025, docket FAA-2023-1893, it applies to every J3C-65 "not equipped with a rudder having a rudder post made from 4130N low-alloy steel" and requires that the rudder be replaced. The FAA estimates $3,000 per airplane (8 work-hours plus $2,320 in parts) across 30,992 US-registered airplanes. The J-3 falls in Category IV — no rudder-post beacon, 100 hp or below — which is the longest compliance time in the rule: ten years, so 20 March 2035. Piper Service Bulletin 1379B of 7 May 2024 explains how to tell which steel a given rudder post is. A Cub with a 100+ hp conversion or a beacon on the rudder post moves to a shorter category.

The type clubs fought this rule hard and specifically asked for the J-3 and PA-11 to be removed, on the grounds that they use a different rudder assembly and have never had a failure. The FAA agreed about the assembly, disagreed about the post — "the part number of the rudder post itself is the same for both rudder assemblies" — and created Category IV in response. Worth knowing when a seller tells you the AD is overreach: the argument is real and it lost.

AD 2015-08-04 — "Wings" — is the current wing lift strut AD. Effective 3 June 2015, docket FAA-2014-1083, it supersedes 99-01-05 R1 which superseded 99-01-05 which superseded 93-10-06, "Corroded Wing Lift Struts or Cracked Forks". The J3C-65 is named in its model list. Sources written before 2015 — including some still online — cite 93-10-06; that chain has moved twice since. Sealed replacement struts are the usual terminating answer.

AD 85-06-04 — "Fuel Tank" — effective 4 May 1985. This is the one AOPA describes without numbering: rainwater entering the tank through the stainless-steel wire fuel gauge. AOPA notes what to look for on a specific airframe: "Airplanes that are in compliance with the AD have fuel drains installed at the low point of each tank — those drains are not original equipment."

Others naming the J3C-65 in the FAA's index, by subject: 78-10-03 Fuel Venting, 68-05-01 Exhaust Mufflers, 52-07-03 Lift Strut Rework, 47-50-06 Shock Strut Cracks, 58-12-02 Aileron Hinge Brackets, 49-14-01 Elevator Connector Tube Fitting, 50-05-01 Nicopress Sleeve Rework and 46-37-01 Fuel Strainer Gasket.

This is not a compliance list. Applicability turns on serials, part numbers and previously embodied modifications that only the AD text and the airplane's logbooks settle, and engine ADs are not included — those are issued against the Continental type certificate and were not searched in this pass.

Common Problems and Pre-Buy Concerns

Fabric condition is the single largest variable. Have it punch-tested at multiple points on wings, fuselage and control surfaces; marginal fabric means a re-cover, and a re-cover is the most expensive thing that happens to a Cub.

Wood spars against metal spars. Davisson: "Wing spars come in two varieties, wood and extruded aluminum. Wood spars are seen in every variation from a single plank, to laminated, to laminated with the individual laminates made up of different length pieces scarfed together. Properly varnished and cared for, all variations are fine, but need inspection before buying. Beware gray, flaking varnish or dark wood." Metal spars need only "corrosion on the top side of the lower caps which can trap moisture. Also inspect for extraneous screw holes." This distinction shows up on the paperwork too: A-691's auxiliary tank option is metal-spar airplanes only.

Longeron rust at the tail post. Davisson: "the fuselage is prone to longeron rust at the tail post from water running to the low point. Remember, these airplanes weren't always hangar queens, so most have had, or need, repairs in that area." Open the inspection panels.

Struts and strut forks — the subject of the current AD. Internal corrosion from the bottom end where moisture collects, plus fork integrity.

Brakes. The original expander-tube brakes are, in Davisson's words, "very expensive to rebuild. The tubes and blocks have sky rocketed." Aviation Consumer adds that "For pilots used to toe brakes, the Cubs heel brakes are weak and awkward and many a pilot has gotten to them a split second too late to stop a groundloop."

Leading edges. ".016, soft aluminum and won't take much abuse before assuming the visual character of a plowed field."

The fuel gauge is a wire. A float on a wire sticking out of the cowling. Experienced Cub pilots fly on time and a dipstick.

Cockpit size. Aviation Consumer: "The cockpit is absurdly small for anyone taller than 5-feet 10 inches or so." Sit in one before you buy one.

Low hull values, slow speeds and fixed gear keep premiums modest; tailwheel configuration and hand-propping are the underwriting concerns.

Typical Premiums (2025-2026)

These bands are the April 2026 generated pass, from reference/insurance-costs.md's tailwheel fixed-gear class. They are not quotes for this type and were not re-sourced in this research pass.

• Tailwheel time is the primary premium driver: 25+ hours is a typical minimum, 100+ yields the best rates.
• Hand-propping is an insurance concern; some carriers restrict who may prop.
• Hull values have risen faster than these bands. A $90,000 J-3 will not insure at a $40,000 hull rate.

See GA Insurance Underwriting for context.