Type Record · As of May 3, 2026
GRUMMAN G-73T
Fixed Wing Multi Engine · U/A CANADA PT6A-34
Registered
2
Year Range
1949–1949
NTSB Events
0
Airworthiness Directives
1
01 / Distribution
Where the fleet lives and was built
Counts of currently-registered GRUMMAN G-73T aircraft by US state and decade of manufacture, sourced from the FAA Aircraft Registry.
By State (top 10)
- TX 50.0% 1
- DE 50.0% 1
By Decade of Manufacture
- 1940s 50.0% 1
- Unknown 50.0% 1
02 / NTSB Records
Events involving GRUMMAN G-73T aircraft
No NTSB-recorded events match GRUMMAN G-73T in the indexed corpus.
03 / Airworthiness Directives
FAA directives applicable to GRUMMAN G-73T
1 directive(s) on file. Showing the most recent 1.
-
Feb 18, 1998
Airworthiness Directives; Gulfstream Model G-159 Series Airplanes
This amendment adopts a new airworthiness directive (AD), applicable to all Gulfstream Model G-159 series airplanes, that requires revising the Airplane Flight Manual (AFM) to specify procedures that would prohibit flight in severe icing conditions (as determined by certain visual cues), limit or prohibit the use of v…
06 / Supplemental Type Certificates
Modifications approved for GRUMMAN G-73T
24 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
-
05/17/2024
STC SA4503NM (PAGE 1)
Remove original cloth covering and install Ceconite covering
Ceconite Division of Poly-Fiber Inc.
-
09/09/2022
STC SA4503NM (PAGE 1)
Install Ceconite covering material.
Ceconite Division of Poly-Fiber Inc
-
07/27/2022
STC SA01757WI
To allow the use of UL91 or UL94 (minimum) grade aviation fuel
Swift Fuels LLC
-
05/19/2022
STC SA04776NY (1 OF 2)
The HIPEC Covering and Finishing System must be performed and maintained
HIPEC Aircraft Coatings Inc.
-
05/18/2022
STC SA04776NY (2 OF2)
The HIPEC Covering and Finishing System must be performed and maintained
HIPEC Aircraft Coatings Inc.
-
07/27/2020
STC SA01831WI
To allow the use of UL91 (minimum) grade aviation fuel
Petersen Aviation Inc
-
06/04/2020
STC SA02268CH (PAGE 5)
Installation of Airwolf Filter Corp. Air Oil Separator
Airwolf Filter Corporation
-
02/11/2019
STC SA01831WI
To allow the use of UL91 (minimum) grade aviation fuel
ADI LLC
-
12/20/2017
STC SA02268CH (PAGE 5)
Installation of Airwolf Filter Corp. Air Oil Separator
Airwolf Filter Corporation
-
01/24/2017
STC SA01831WI
To allow the use of UL91 (minimum) grade aviation fuel
Petersen Aviation Inc
-
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
-
06/04/2015
STC SA00478CH
Installation of Cooper Superflite 102 Fabric.
Aviation Products Systems Inc.
-
05/10/2012
STC SA00478CH
Installation of Cooper Superflite 102 Fabric.
Aviation Products Systems Inc.
-
09/14/2011
STC SA00478CH (PAGE 3)
Installation of Cooper Superflite 102 Fabric.
Aviation Products Systems Inc.
-
08/28/2011
STC SA02268CH (PAGE 5)
Installation of Airwolf Filter Corp. Air Oil Separator
Airwolf Filter Corporation
-
02/25/2011
STC SA4503NM (Page 1)
Install Ceconite covering material.
Ceconite Division of Poly-Fiber Inc
-
06/26/2009
STC SA01734SE (PG 2)
Application of Stewart Systems synthetic fabric covering system to aircraft fuselage, wings, tail surfaces, control surfaces and related parts.
Stewart Thomas D. and Stewart Dan R.
-
02/01/2009
STC SA00478CH (PAGE 3)
Installation of Cooper Superflite 102 Fabric.
Aviation Products Systems Inc.
-
05/23/2008
STC SA00478CH (PAGE 3)
Installation of Cooper Superflite 102 Fabric.
Aviation Products Systems Inc.
-
05/14/2007
STC SA00478CH (PAGE 3)
Installation of Cooper Superflite 102 Fabric.
Aviation Products Systems Inc.
-
08/19/1980
STC SA4-1210
Installation of Eonnex cover on aircraft surfaces.
Ceconite, Inc
04 / Regulations watching this type
Advisory Circulars and Federal Register activity for GRUMMAN G-73T
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 2 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.
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 →