The Grumman G-21 Goose is a twin engine amphibious aircraft developed in the United States for civil transport and later adapted for military transport and utility roles. Discover Grumman G-21 Goose aircraft for sale worldwide on AvPay. Browse active Grumman G-21 Goose listings and find available aircraft across the USA, North America, UK, Europe, Asia, Africa, Australia and South America. Connect directly with aircraft brokers, private sellers, flying clubs, flight schools and manufacturers. Explore the full inventory of aircraft for sale on AvPay here!
There are currently no aircraft listed for Grumman G-21 Goose. Showing all Grumman aircraft.
Finding a Grumman G-21 Goose for Sale on AvPay
AvPay offers a global marketplace for the Grumman G-21 Goose, connecting buyers and sellers across the USA, North America, UK, Europe, Asia, Africa, Australia, South America and beyond. Discover your ideal new or used Grumman G-21 Goose amphibious aircraft in our extensive online selection.
Refine your Grumman G-21 Goose search on AvPay with our easy-to-use filters. Quickly find your perfect aircraft by condition, year, total time, location, price and seller.
As a leading aviation marketplace, AvPay features a diverse range of aircraft for sale including the legendary Grumman G-21 Goose. Explore our full Grumman selection here, or browse all aircraft from various manufacturers here.
Found your ideal Grumman G-21 Goose? Connect directly with sellers on AvPay via WhatsApp, private message or phone to discuss pricing, maintenance history and specifications of the Grumman G-21 Goose Aircraft For Sale.
Interesting facts about the Grumman G-21 Goose
✈ Grumman developed the G-21 Goose as a modern amphibious transport in the late 1930s, aiming to deliver landplane-like performance with true water capability.
✈ The aircraft uses a flying boat hull with retractable landing gear, letting owners move between runways, lakes and coastal harbours without changing the airframe.
✈ Grumman mounted the engines on the wing leading edge rather than above the wing, a design choice that reduced drag and improved visibility compared with many earlier amphibians.
✈ The standard airframe uses two Pratt and Whitney R-985 Wasp Junior radial engines, a widely supported powerplant family with strong parts knowledge across classic operators.
✈ Grumman divided the hull into watertight compartments, an engineering feature that matters to buyers assessing safety margins and restoration quality.
✈ The Goose entered military service in multiple countries, with the United States Navy operating the type under the JRF designation in utility transport roles.
✈ McKinnon Enterprises produced well known conversion programs for the Goose that changed engines, cabin glazing and systems, which can materially affect maintenance planning and insurability.
✈ Operators have used the Goose for decades in remote transport, island shuttle work and special missions where amphibious access outweighs outright cruise speed.
Model Variants for buyers to consider when purchasing a Grumman G-21 Goose
Buyers will see the Grumman G-21 Goose described through several recognised variant families that influence capability and paperwork. The early production models include the G-21 and the improved G-21A. Military versions appear under designations such as the XJ3F prototype and the JRF series operated by the United States Navy and others. Later, specialist modification houses produced major conversion programs, including McKinnon variants such as the G-21C, G-21D, G-21E and G-21G, which can change engines, systems and operating economics. When comparing aircraft, confirm the exact variant on the data plate and review the associated approvals, STCs and maintenance records since these details strongly affect ownership complexity and resale.
Grumman G-21 Goose Specifications
Information provided here is as a guide only. This information should not be used for flight planning or other aircraft operations. Aircraft model variations, custom specifications, modifications, upgrades and age will have a considerable impact on the details listed below. Please check with the seller, manufacturer or aviation authority for the precise aircraft specifications.
Wingspan: 14.94 m (49 ft 0 in)
Height: 4.93 m (16 ft 2 in)
Empty Weight: 2,461 kg (5,425 lb)
Max Take Off Weight (MTOW): 3,629 kg (8,000 lb)
Powerplant: 2 × Pratt and Whitney R-985 Wasp Junior air-cooled radial piston engines, 450 hp each
Cruise Speed: 307 km/h (191 mph, 166 kn) at 5,000 ft (1,500 m)
Service Ceiling: 6,500 m (21,300 ft)
Rate of Climb: 5.6 m/s (1,100 ft/min)
FAQs About the Grumman G-21 Goose
Is the Grumman G-21 Goose a true amphibious flying boat?
Yes. The G-21 Goose combines a boat hull fuselage with retractable landing gear so it can operate from water and from conventional runways.
What engines power the Grumman G-21 Goose?
Many aircraft retain the original Pratt and Whitney R-985 Wasp Junior radial engines, while some aircraft have approved conversions that change the powerplant and systems.
What should buyers look for when inspecting the hull?
Focus on corrosion history, repairs and hull integrity around step areas, keel sections and fittings, since water operations and storage conditions can drive long term airframe work.
How do McKinnon conversions affect ownership?
McKinnon conversions can add performance and cabin utility but they also add configuration complexity, so confirm the exact conversion status, approved data and parts support before committing.
What missions does the Grumman G-21 Goose suit today?
Owners typically choose the Goose for specialist transport and utility roles where amphibious access matters, especially in coastal, island and remote regions.
Get help buying a Grumman G-21 Goose
Can’t find the Grumman G-21 Goose aircraft you’re looking for? Get in touch with an Aircraft Broker to help you buy an aircraft via the Aircraft Broker Directory. Alternatively you can browse Aircraft Brokerage and Aircraft Acquisition Services through the aviation marketplace to help you with the purchase of a Grumman G-21 Goose airplane.
Sell your Grumman G-21 Goose on AvPay
Do you have a Grumman G-21 Goose Aircraft for Sale? Get your aircraft listed on AvPay and get in front of buyers searching for a Grumman G-21 Goose around the world. AvPay is a Zero Workload Website so you will never have to make your own updates and each aircraft listing will be featured on our Social Media Pages, giving you extra visibility in front of our 190,000+ followers. With AvPay you will not just generate enquiries on your Aircraft Listings. You will also generate enquiries through your Aircraft Broker Profile and through each of the Service Listings you include on our Aviation Marketplace Pages. Let AvPay promote your Grumman G-21 Goose aircraft for sale.
Get Your Grumman G-21 Goose Aircraft Listed for Sale on AvPay
Find Finance for buying a Grumman G-21 Goose
Financing a Grumman G-21 Goose often depends on the aircraft’s exact variant and its maintenance and restoration history.
Specialist lenders can factor in hull condition, engine time and approved conversions when assessing risk.
They can also advise on survey expectations, deposit levels and timelines for closing on a classic amphibian purchase.
Speak with aviation finance experts who understand vintage twin engine aircraft and seaplane operations.
Explore Grumman G-21 Goose Aircraft Financing Options
Find Insurance for a Grumman G-21 Goose
Insurance for a Grumman G-21 Goose needs to reflect amphibious operations and the aircraft’s configuration and usage profile.
Aviation brokers can arrange hull and liability cover that accounts for water landings, seaplane bases and pilot experience requirements.
They can also help you document approved modifications and set an agreed value that matches restoration quality where applicable.
Work with specialist aviation insurers who understand classic flying boats and twin engine piston aircraft.
Buy Insurance for Grumman G-21 Goose Aircraft