Type Record · As of May 3, 2026
WEATHERLY AVIATION CO INC 620B
Fixed Wing Single Engine
Registered
24
Year Range
1992–1997
NTSB Events
12
Airworthiness Directives
0
01 / Distribution
Where the fleet lives and was built
Counts of currently-registered WEATHERLY AVIATION CO INC 620B aircraft by US state and decade of manufacture, sourced from the FAA Aircraft Registry.
By State (top 10)
- NE 12.5% 3
- IA 8.3% 2
- ND 8.3% 2
- NC 8.3% 2
- MN 8.3% 2
- MT 8.3% 2
- OR 8.3% 2
- SC 4.2% 1
- AL 4.2% 1
- NJ 4.2% 1
+6 more states
By Decade of Manufacture
- 1990s 87.5% 21
- Unknown 12.5% 3
02 / NTSB Records
Events involving WEATHERLY AVIATION CO INC 620B aircraft
12 event(s) on file. Showing the most recent 12.
-
Jul 23, 2025
N2032JRushmore, Minnesota Minor
NTSB Docket → -
May 29, 2025
N90393Lewiston, Montana
NTSB Docket → -
Jul 30, 2011
N90181Hettinger, North Dakota
NTSB Docket → -
Aug 8, 1999
N197SKOBERLIN, Kansas
NTSB Docket → -
Jun 5, 1993
N2002ECROWLEY, Louisiana
NTSB Docket → -
Dec 21, 1991
N1999RWATSONVILLE, California
NTSB Docket → -
Jan 18, 1989
N9021MRONKONKOMA, New York Serious
NTSB Docket → -
Dec 31, 1988
N90393SOMERVILLE, New Jersey Serious
NTSB Docket → -
May 31, 1986
N2002EGOODYEAR, Arizona Serious
NTSB Docket → -
May 1, 1980
N9021MSHREVEPORT, Louisiana
NTSB Docket → -
Apr 7, 1973
N20122HASTINGS, Michigan
NTSB Docket → -
Dec 19, 1970
N2035NVERGENNES, Illinois Fatal
NTSB Docket →
03 / Airworthiness Directives
FAA directives applicable to WEATHERLY AVIATION CO INC 620B
No matching airworthiness directives are on file for this make and model in the Federal Register.
04 / Type Certificate Data Sheets
FAA TCDS for WEATHERLY AVIATION CO INC 620B
The TCDS is the legal certification document — weight limits, performance, equipment, AD compliance times, operating limitations. 1 match in the FAA catalog.
- A26WE Current Rev 7 · 12/03/2001
Weatherly Aircraft Company
Models: 620B-TG, 620, 620A, 620TP + 1 more
06 / Supplemental Type Certificates
Modifications approved for WEATHERLY AVIATION CO INC 620B
60 STCs on file — every FAA-approved modification, alteration, or installation for this aircraft. STOL kits, avionics, fuel systems, floats, engine swaps, you name it.
-
08/21/2024
STC SA01757WI
To allow the use of UL91 or UL94 (minimum) grade aviation fuel
Swift Fuels LLC
-
09/01/2022
STC SA01967WI (3 OF3)
Use of GAMI G100UL High Octane Unleaded Avgas
General Aviation Modifications Inc.
-
07/27/2022
STC SA01757WI
To allow the use of UL91 or UL94 (minimum) grade aviation fuel
Swift Fuels LLC
-
07/27/2020
STC SA01831WI
To allow the use of UL91 (minimum) grade aviation fuel
Petersen Aviation Inc
-
06/04/2020
STC SA02268CH (PAGE 6)
Installation of Airwolf Filter Corp. Air Oil Separator
Airwolf Filter Corporation
-
09/25/2019
STC SA5190NM
Installation of Gustin Aviation chip detector light system.
A & L Aircraft Parts Inc
-
02/11/2019
STC SA01831WI
To allow the use of UL91 (minimum) grade aviation fuel
ADI LLC
-
09/07/2018
STC SA01435SE
Installation of J.P. Instruments (JPI) Primary Engine Data Management System
J. P. Instruments
-
08/27/2018
STC SA5190NM
Installation of Gustin Aviation chip detector light system.
A & L Aircraft Parts, Inc
-
08/20/2018
STC SA01435SE
Installation of J.P. Instruments (JPI) Primary Engine Data Management System
J. P. Instruments
-
08/13/2018
STC SA01435SE
Installation of J.P. Instruments (JPI) Primary Engine Data Management System
J. P. Instruments
-
01/22/2018
STC SA01435SE
Installation of J.P. Instruments (JPI) Primary Engine Data Management System
J. P. Instruments
-
12/20/2017
STC SA02268CH (PAGE 6)
Installation of Airwolf Filter Corp. Air Oil Separator
Airwolf Filter Corporation
-
12/20/2017
STC SA01282NY
Installation of Airwolf remote mounted engine oil filter kit AFC-K015 on aircraft powered by Pratt & Whitney radial reciprocating engine Series R-985, R-1340 and R-1830.
Airwolf Filter Corporation
-
03/29/2017
STC SA5190NM
Installation of Gustin Aviation chip detector light system.
A & L Aircraft Parts, Inc
-
01/24/2017
STC SA01831WI
To allow the use of UL91 (minimum) grade aviation fuel
Petersen Aviation Inc
-
08/27/2016
STC SA01240SE (5 OF 5)
Installation of secondary voltage indication system
Visual Instruments LLC
-
08/02/2016
STC SA01435SE
Installation of J.P. Instruments (JPI) Primary Engine Data Management System
J. P. Instruments
-
05/20/2016
STC SA01757WI
To allow the use of UL91 or UL94 (minimum) grade aviation fuel
Swift Fuels LLC
-
03/09/2016
STC SA01757WI
To allow the use of UL91 or UL94 (minimum) grade aviation fuel
Petersen Aviation Inc
-
10/28/2015
STC SA01757WI
To allow the use of UL91 (minimum) grade aviation fuel
Petersen Aviation Inc
-
06/18/2015
STC SA01435SE
Installation of J.P. Instruments (JPI) Primary Engine Data Management System
J. P. Instruments
-
08/20/2014
STC SA01435SE
Installation of J.P. Instruments (JPI) Primary Engine Data Management System
J. P. Instruments
-
06/30/2014
STC SA02283SE Page 2
Installation of Electronics International Inc. Glass Panel Engine Monitor (with In Flight Data) CGR-30P
Electronics International Inc.
-
06/24/2014
STC SA02402SE Page 2
Installation of Electronics International Inc. Glass Panel Engine Monitor (with In-Flight Data) CGR-30C
Electronics International Inc.
-
12/10/2013
STC SA02283SE Page 2
Installation of Electronics International Inc. Glass Panel Engine Monitor (with In Flight Data) CGR-30P
Electronics International Inc.
-
08/27/2013
STC SA02283SE Page 2
Installation of Electronics International Inc. Glass Panel Engine Monitor (with In Flight Data) CGR-30P
Electronics International Inc.
-
07/25/2013
STC SA02283SE Page 2
Installation of Electronics International Inc. Glass Panel Engine Monitor (with In Flight Data) CGR-30P
Electronics International Inc.
-
10/31/2012
STC SA01282NY
Installation of Airwolf remote mounted engine oil filter kit AFC-K015 on aircraft powered by Pratt & Whitney radial reciprocating engine Series R-985, R-1340 and R-1830.
Airwolf Filter Corporation
-
08/28/2011
STC SA02268CH (PAGE 6)
Installation of Airwolf Filter Corp. Air Oil Separator
Airwolf Filter Corporation
+ 30 more STCs on file
07 / PMA replacement parts
FAA-approved replacement parts for WEATHERLY AVIATION CO INC 620B
14 parts on file from the FAA Parts Manufacturer Approval database. Each is a non-OEM part the FAA has authorized for use as a replacement on this aircraft type.
-
W/XT-2705-LH#https://drs.faa.gov/browse/excelExternalWindow/639068A84E2F945B86257B2C005F8668.0001##
Weatherly 620 Rear Side Windows - RH or LH (Left Any Tint)
Great Lakes Aero Products Inc replaces 10010-105
PMA holder → -
W/G-2705-RH#https://drs.faa.gov/browse/excelExternalWindow/A40F86F99A3FC49F86257B2C005F866F.0001##
Weatherly 620 Rear Side Windows - RH or LH (Right Gray)
Great Lakes Aero Products Inc replaces 10010-106
PMA holder → -
W-2705-RH#https://drs.faa.gov/browse/excelExternalWindow/E607E2B8EDB2D58F86257B2C005F866D.0001##
Weatherly 620 Rear Side Windows - RH or LH (Right Clear)
Great Lakes Aero Products Inc replaces 10010-106
PMA holder → -
W-2705-LH#https://drs.faa.gov/browse/excelExternalWindow/EEF7448EA3709CC086257B2C005F8665.0001##
Weatherly 620 Rear Side Windows - RH or LH (Left Clear)
Great Lakes Aero Products Inc replaces 10010-105
PMA holder → -
SC-W/XT-2705-RH#https://drs.faa.gov/browse/excelExternalWindow/E8E4BDF04704F9CA86257B2C005F8677.0001##
Weatherly 620 Rear Side Windows - RH or LH (Right SC Any Tint)
Great Lakes Aero Products Inc replaces 10010-106
PMA holder → -
SC-W/G-2705-RH#https://drs.faa.gov/browse/excelExternalWindow/ED6DCA51E558B7D886257B2C005F8674.0001##
Weatherly 620 Rear Side Windows - RH or LH (Right SC Gray)
Great Lakes Aero Products Inc replaces 10010-106
PMA holder → -
SC-W/G-2705-LH#https://drs.faa.gov/browse/excelExternalWindow/6808D1C3680027EA86257B2C005F866B.0001##
Weatherly 620 Rear Side Windows - RH or LH (Left SC Gray)
Great Lakes Aero Products Inc replaces 10010-105
PMA holder → -
W/XT-2705-RH#https://drs.faa.gov/browse/excelExternalWindow/412B1CD52D0A58B386257B2C005F8671.0001##
Weatherly 620 Rear Side Windows - RH or LH (Right Any Tint)
Great Lakes Aero Products Inc replaces 10010-106
PMA holder → -
SC-W/T-2705-LH#https://drs.faa.gov/browse/excelExternalWindow/6B8369CD09A9E75886257B2C005F8669.0001##
Weatherly 620 Rear Side Windows - RH or LH (Left SC Green)
Great Lakes Aero Products Inc replaces 10010-105
PMA holder → -
W/T-2705-RH#https://drs.faa.gov/browse/excelExternalWindow/DE36B4273B5A988A86257B2C005F866E.0001##
Weatherly 620 Rear Side Windows - RH or LH (Right Green)
Great Lakes Aero Products Inc replaces 10010-106
PMA holder → -
W/T-2705-LH#https://drs.faa.gov/browse/excelExternalWindow/92169EA5FC7B642186257B2C005F8666.0001##
Weatherly 620 Rear Side Windows - RH or LH (Left Green)
Great Lakes Aero Products Inc replaces 10010-105
PMA holder → -
SC-W/T-2705-RH#https://drs.faa.gov/browse/excelExternalWindow/62692F8954F9D94486257B2C005F8672.0001##
Weatherly 620 Rear Side Windows - RH or LH (Right SC Green)
Great Lakes Aero Products Inc replaces 10010-106
PMA holder → -
W/G-2705-LH#https://drs.faa.gov/browse/excelExternalWindow/370FFAC1A4700ABB86257B2C005F8667.0001##
Weatherly 620 Rear Side Windows - RH or LH (Left Gray)
Great Lakes Aero Products Inc replaces 10010-105
PMA holder → -
SC-W/XT-2705-LH#https://drs.faa.gov/browse/excelExternalWindow/4582A868B139C3E686257B2C005F866C.0001##
Weatherly 620 Rear Side Windows - RH or LH (Left SC Any Tint)
Great Lakes Aero Products Inc replaces 10010-105
PMA holder →
04 / Regulations watching this type
Advisory Circulars and Federal Register activity for WEATHERLY AVIATION CO INC 620B
Advisory Circulars
No ACs explicitly mention this type. Showing universal operating-rule ACs that apply to all aircraft.
Recent Federal Register activity
Latest rulemakings touching general operating rules (Part 91) and maintenance rules (Part 43).
- 2026-04-17 Settlement Policy for Small Unmanned Aircraft System (UAS) Cases FR ↗
- 2026-02-10 Normalizing Unmanned Aircraft Systems Beyond Visual Line of Sight Operations; Reopening of Comment Period; Denial of Extension FR ↗
- 2026-02-02 25-Hour Cockpit Voice Recorder (CVR) Requirement, New Aircraft Production FR ↗
- 2026-01-28 Normalizing Unmanned Aircraft Systems Beyond Visual Line of Sight Operations; Reopening of Comment Period FR ↗
- 2026-01-07 Requirements for Interference-Tolerant Radio Altimeter Systems FR ↗
05 / Aircraft of this type
All 24 registered N-numbers
Every tail currently on the FAA registry for this make/model. Click an N-number to query the FAA Aircraft Inquiry; rows flagged ● have NTSB events on file. Tails seeded with full TallyAero pages link directly.
| N-number | St | Year | NTSB | FAA |
|---|---|---|---|---|
| N197SK | IA | — | ● | Look up ↗ |
| N1999R | NE | 1997 | ● | Look up ↗ |
| N20003 | SC | 1992 | · | Look up ↗ |
| N2002E | IA | 1992 | ● | Look up ↗ |
| N2009W | AL | 1993 | · | Look up ↗ |
| N20122 | ND | 1994 | ● | Look up ↗ |
| N2015N | NC | 1993 | · | Look up ↗ |
| N2021S | NJ | 1993 | · | Look up ↗ |
| N20263 | NE | 1994 | · | Look up ↗ |
| N2032J | MN | 1994 | ● | Look up ↗ |
| N2034M | NE | 1995 | · | Look up ↗ |
| N2035N | MT | 1995 | ● | Look up ↗ |
| N620RS | KS | 1996 | · | Look up ↗ |
| N620SA | WY | 1997 | · | Look up ↗ |
| N65876 | TX | — | · | Look up ↗ |
| N9000P | MN | 1995 | · | Look up ↗ |
| N90181 | ND | 1996 | ● | Look up ↗ |
| N90182 | MO | — | · | Look up ↗ |
| N9021M | WA | 1996 | ● | Look up ↗ |
| N90225 | NC | 1996 | · | Look up ↗ |
| N90275 | CO | 1996 | · | Look up ↗ |
| N90393 | MT | 1995 | ● | Look up ↗ |
| N9057G | OR | 1997 | · | Look up ↗ |
| N9057T | OR | 1997 | · | Look up ↗ |
Source — FAA Aircraft Registry · click "Look up" to query the live registry record (owner, address, last airworthiness)
05 / Sources & Methodology
Every count traces back to a primary US-government source
- FAA Aircraft Registry →
Refreshed Apr 27, 2026
Available
- NTSB CAROL →
Refreshed Apr 27, 2026
Available
- Federal Register (FAA Airworthiness Directives) →
Refreshed Apr 27, 2026
Available
We render counts and lists as the agency publishes them. Read the methodology →