Grumman G-21
35 on the U.S. register across 2 versions the FAA records separately. Built from 1939 to 1962; half of them date from 1944 or earlier. California has the most (6). 60% are registered to companies, flight schools, clubs and other organisations; the rest to individuals, who are not named here at this time.
About the G-21 from the FAA's model table
- Type
- Fixed-wing, multi-engine · Piston twins
- Power
- Piston (reciprocating), 2 engines
- Common engines
- P&W R-985 Series (29), P & W R-985-An-6B (1), P & W R-985-14B (1)
- Fuel
- 100LL avgasUnleaded: car gasoline under STC SA1966CE
- Seats
- 8
- Cruise speed
- about 150 mph
- Built of
- aluminium
- Maker on the register
- Grumman
- Registered
- earliest certificate July 25, 1991; newest October 8, 2026
Where they are owner's state
Who owns them registrant type
By owner type, as a table
| aircraft | share | |
|---|---|---|
| Individual | 12 | 34% |
| Corporation | 12 | 34% |
| LLC | 9 | 26% |
| Co-owned | 2 | 6% |
Versions as the FAA records them · click one to list only those aircraft
When they were built by decade · 7 with no year on file
Registration status
Airworthiness certificate class
Biggest operators companies, schools and clubs
Largest fleets, as a table
| aircraft | |
|---|---|
| Stage One Associates LLC | 2 |
| Yanks Air Museum | 1 |
| Valadez Goose LLC | 1 |
| Uss Alabama Battleship Foundation INC | 1 |
| Tongass Historical Society INC | 1 |
| Stick and Rudder Aviation INC | 1 |
| Southern Cross Aviation LLC | 1 |
| Runyon Aviation LLC | 1 |
| Ozark Management INC | 1 |
| Mike Rinker Aircraft LLC | 1 |
| L-13 LLC | 1 |
| International Air Services INC Trustee | 1 |
Fleet pages: Stage One Associates LLC · Yanks Air Museum · Ozark Management INC · Mike Rinker Aircraft LLC · International Air Services INC Trustee
Accident history NTSB records · 17 cases since 1982, 4 fatal
The 8 most recent of 17 cases where the NTSB's make and model match this family's versions. Each aircraft's own page also shows its record. How this model compares with others, with the fleet taken into account: Accidents by model in Aviation Analytics.
Questions people ask answers refresh every morning
How many Grumman G-21 aircraft are registered in the U.S.?
35 as of November 12, 2026, counting 2 versions the FAA records separately.
Which state has the most Grumman G-21s?
California, with 6.
Who owns the Grumman G-21?
60% are registered to companies, flight schools, clubs and other organisations; the rest to individuals and co-owners, who are not named on this site at this time.
When were the Grumman G-21s on the register built?
Between 1939 and 1962; half of them in 1944 or earlier.
How many Grumman G-21 accidents has the NTSB recorded?
17 accidents and incidents since 1982, 4 of them fatal. A model flown more shows more; the accident analytics compare models per thousand registered.
What is the Grumman G-21 made of?
The airframe is aluminium: sheet metal over a riveted frame, the way most aircraft have been built since the 1940s. The FAA's type certificate data sheet is the authority for any one model.
What the FAA has certified, ordered and been told about the Grumman G-21 the component layer
The airframe is aluminium: sheet metal over a riveted frame, the way most aircraft have been built since the 1940s. The FAA has issued 10 airworthiness directives (orders that owners must comply with) that name this model, most of them about flight controls. 40 approved modifications exist for it, the most by Atlantic Coast Sea Planes LLC.
FAA orders 10 airworthiness directives · newest first
All orders naming the Grumman G-21
By system
Orders by system, as a table
| orders | share | |
|---|---|---|
| Flight controls | 3 | 30% |
| Landing gear | 2 | 20% |
| Engine | 2 | 20% |
| Heating, ice protection and utility systems | 1 | 10% |
| Other and general | 1 | 10% |
| Fuel system | 1 | 10% |
Approved replacement parts 94 parts manufacturer approvals
Parts a company other than the maker may make for this design and sell as FAA-approved. The companies holding the most:
Most often: clips (30), bulkhead (17), stringer (12), bulkhead web (10), bracket (4), hand hole (3), hull chine (2), fuel tank (2), coupling (2), center bulkhead (2).
Approved modifications 40 supplemental type certificates
Changes the FAA has approved for this design, from new avionics and engines to floats and parachutes. The companies holding the most:
Latest
Sources: the FAA's type certificate data sheets, airworthiness directives, supplemental type certificates, special conditions and special airworthiness information bulletins (Dynamic Regulatory System), and the FAA's service difficulty reports. A failure report is what an operator or repair station chose to file; the counts show reporting as much as reliability, and larger and commercial fleets report more. How the systems are grouped.
Connections how the G-21 links to the rest of the register
- Grumman 443 aircraft on the register
- Grumman G-21A 34 registered
- Grumman G-21 1 registered
- Built of aluminium
- Pratt & Whitney R-985 series 29 of these aircraft · 450 hp
- Pratt & Whitney R-985-AN-6B 1 of these aircraft · 400 hp
- Pratt & Whitney R-985-14B 1 of these aircraft · 400 hp
- California 6 of these aircraft
- Alaska 4 of these aircraft
- Texas 3 of these aircraft
- Delaware 3 of these aircraft
- New York 2 of these aircraft
- Stage One Associates LLC 2 of these aircraft
- Yanks Air Museum 1 of these aircraft
- Valadez Goose LLC 1 of these aircraft
- Uss Alabama Battleship Foundation INC 1 of these aircraft
- Tongass Historical Society INC 1 of these aircraft
- NTSB accidents and incidents involving the G-21 17 cases since 1982 · 4 fatal
- FAA filings this year on these aircraft 4 filings · 2 loan or lien, 2 bill of sale
- FAA orders naming the G-21 10 airworthiness directives
- Approved modifications for the G-21 40 supplemental type certificates
The whole map of how records connect · these connections as data: /graph/model/grumman/g-21.json.
Aircraft newest certificates first · 35
| Tail no. | Maker and model | Owner and base | Certificate | Registered | Status |
|---|---|---|---|---|---|
| N4575C | Grumman G-21A |
International Air Services INC Trustee Carson City, Nevada |
Standard | 2026-10-08 | ValidFAA registration status code V: Valid registration. All codes |
| N7211 | Grumman G-21A |
Stage One Associates LLC Oxford, Connecticut |
Standard | 2026-04-14 | ValidFAA registration status code V: Valid registration. All codes |
| N5548A | Grumman G-21A |
Stage One Associates LLC Oxford, Connecticut |
Standard | 2026-04-01 | ValidFAA registration status code V: Valid registration. All codes |
| N22932 | Grumman G-21A |
Runyon Aviation LLC Fort Worth, Texas |
Standard | 2025-10-09 | ValidFAA registration status code V: Valid registration. All codes |
| N9074N | Grumman G-21A |
Individual owner California |
None on file | 2023-09-30 | ValidFAA registration status code V: Valid registration. All codes |
| N270DB | Grumman G-21A |
Individual owner Pennsylvania |
Standard | 2023-07-27 | ValidFAA registration status code V: Valid registration. All codes |
| N9074U | Grumman G-21A |
Individual owner Michigan |
None on file | 2023-05-31 | ValidFAA registration status code V: Valid registration. All codes |
| N42GL | Grumman G-21A |
Valadez Goose LLC Helena, Montana |
Standard | 2023-05-05 | ValidFAA registration status code V: Valid registration. All codes |
| N74588 | Grumman G-21A |
Southern Cross Aviation LLC Roanoke, Texas |
Standard | 2022-07-28 | ValidFAA registration status code V: Valid registration. All codes |
| N1019N | Grumman G-21A |
Individual owner Florida |
Standard | 2022-06-15 | ValidFAA registration status code V: Valid registration. All codes |
| N48550 | Grumman G-21A |
Uss Alabama Battleship Foundation INC Mobile, Alabama |
Standard | 2022-04-21 | ValidFAA registration status code V: Valid registration. All codes |
| N9750Z | Grumman G-21A |
Individual owner Iowa |
Standard | 2022-02-26 | ValidFAA registration status code V: Valid registration. All codes |
| N345GG | Grumman G-21A |
3G Classic Aviation INC Wilmington, Delaware |
None on file | 2022-02-03 | ValidFAA registration status code V: Valid registration. All codes |
| N69263 | Grumman G-21A |
Individual owner Michigan |
Standard | 2021-09-14 | ValidFAA registration status code V: Valid registration. All codes |
| N778 | Grumman G-21A |
L-13 LLC Blaine, Minnesota |
Multiple | 2021-09-09 | ValidFAA registration status code V: Valid registration. All codes |
| N985R | Grumman G-21A |
Collings Foundation INC DBA Hudson, Massachusetts |
Standard | 2019-12-12 | ValidFAA registration status code V: Valid registration. All codes |
| N329 | Grumman G-21A |
Individual owner California |
Standard | 2018-12-17 | ValidFAA registration status code V: Valid registration. All codes |
| N600ZE | Grumman G-21A |
Mike Rinker Aircraft LLC Union City, Tennessee |
Standard | 2016-04-07 | ValidFAA registration status code V: Valid registration. All codes |
| N7821 | Grumman G-21A |
Yanks Air Museum Baldwin Park, California |
Standard | 2016-01-21 | ValidFAA registration status code V: Valid registration. All codes |
| N291VW | Grumman G-21A |
Co-owned owner California |
Standard | 2015-06-10 | ValidFAA registration status code V: Valid registration. All codes |
| N401SJ | Grumman G-21A |
Individual owner California |
Standard | 2014-05-22 | ValidFAA registration status code V: Valid registration. All codes |
| N7811 | Grumman G-21A |
Evergreen Aviation & Space Museum Mcninnville, Oregon |
Multiple | 2014-01-07 | ValidFAA registration status code V: Valid registration. All codes |
| N703 | Grumman G-21A |
B-81 LLC Anchorage, Alaska |
Standard | 2013-07-22 | ValidFAA registration status code V: Valid registration. All codes |
| N789 | Grumman G-21A |
Alaska Aviation Museum Anchorage, Alaska |
Standard | 2012-07-09 | ValidFAA registration status code V: Valid registration. All codes |
| N159F | Grumman G-21 |
Freshwater Adventures INC Dillingham, Alaska |
None on file | 2012-05-21 | ValidFAA registration status code V: Valid registration. All codes |
| N121SR | Grumman G-21A |
Stick and Rudder Aviation INC Middletown, Delaware |
Standard | 2012-04-14 | ValidFAA registration status code V: Valid registration. All codes |
| N95467 | Grumman G-21A |
Co-owned owner Washington |
Standard | 2012-01-24 | ValidFAA registration status code V: Valid registration. All codes |
| N39FG | Grumman G-21A |
Diesel Acquisitions LLC Milpitas, California |
Standard | 2011-04-25 | ValidFAA registration status code V: Valid registration. All codes |
| N21A | Grumman G-21A |
D B Aero INC Wilmington, Delaware |
Standard | 2011-04-13 | Renewal notice sentFAA registration status code 25: First notice for registration renewal. All codes |
| N741 | Grumman G-21A |
Individual owner New York |
Standard | 2010-01-07 | ValidFAA registration status code V: Valid registration. All codes |
| N327 | Grumman G-21A |
Individual owner New York |
Standard | 2005-05-02 | ValidFAA registration status code V: Valid registration. All codes |
| N9KL | Grumman G-21A |
Ozark Management INC Jefferson City, Missouri |
Standard | 2005-04-22 | Renewal notice sentFAA registration status code 25: First notice for registration renewal. All codes |
| N88821 | Grumman G-21A |
Tongass Historical Society INC Ketchikan, Alaska |
Standard | 1993-03-08 | ValidFAA registration status code V: Valid registration. All codes |
| N6DF | Grumman G-21A |
Individual owner Idaho |
Standard | 1991-07-25 | ValidFAA registration status code V: Valid registration. All codes |
| N68157 | Grumman G-21A |
Individual owner Texas |
Standard | PendingFAA registration status code R: Registration pending. All codes |