SOCATA TB21

01 /  Distribution

Where the fleet lives and was built

Counts of currently-registered SOCATA TB21 aircraft by US state and decade of manufacture, sourced from the FAA Aircraft Registry.

02 /  NTSB Records

Events involving SOCATA TB21 aircraft

4 event(s) on file. Showing the most recent 4.

• Feb 4, 2026

  N967WM

  Prescott, Arizona Fatal

  NTSB Docket →

• Mar 11, 2023

  N789TB

  Eden Prairie, Minnesota Serious

  NTSB Docket →

• Nov 22, 1988

  N20GF

  CLINTON, Iowa

  NTSB Docket →

• Jul 13, 1976

  N9934P

  MEMPHIS, Tennessee

  NTSB Docket →

03 /  Airworthiness Directives

FAA directives applicable to SOCATA TB21

16 directive(s) on file. Showing the most recent 16.

• Jun 7, 2005

  Airworthiness Directives; Precise Flight, Inc. Models SVS I and SVS IA Standby Vacuum Systems

  The FAA adopts a new airworthiness directive (AD) for all airplanes equipped with Precise Flight, Inc. (Precise Flight) Models SVS I and SVS IA standby vacuum systems (SVS) installed under certain supplemental type certificates or through field approval. This AD requires you to replace the airplane flight manual suppl…

  Atlas AD → Federal Register ↗

• Mar 4, 2005

  Airworthiness Directives; Precise Flight, Inc. Models SVS I and SVS IA Standby Vacuum Systems

  The FAA proposes to adopt a new airworthiness directive (AD) for all airplanes equipped with Precise Flight, Inc. (Precise Flight) Models SVS I and SVS IA standby vacuum systems (SVS) installed under certain supplemental type certificates or through field approval. This proposed AD would require you to replace the air…

  Atlas AD → Federal Register ↗

• Jan 19, 2005

  Airworthiness Directives; GARMIN International Inc. GTX 33, GTX 33D, GTX 330, and GTX 330D Mode S Transponders

  The FAA is adopting a new airworthiness directive (AD) to supersede Airworthiness Directive 2004-10-15, which applies to certain GTX 330 and GTX 330D Mode S transponders that are installed on airplanes. AD 2004-10-15 currently requires you to install GTX 330/330D Software Upgrade Version 3.03, 3.04, or 3.05. This AD a…

  Atlas AD → Federal Register ↗

• Oct 7, 2004

  Airworthiness Directives; GARMIN International Inc. GTX 33, GTX 33D, GTX 330, and GTX 330D Mode S Transponders

  The FAA proposes to supersede Airworthiness Directive (AD) 2004-10-15, which applies to certain GTX 330 and GTX 330D Mode S transponders that are installed on airplanes. AD 2004-10-15 currently requires you to install GTX 330/330D Software Upgrade Version 3.03, 3.04, or 3.05. This proposed AD applies to certain GTX 33…

  Atlas AD → Federal Register ↗

• May 21, 2004

  Airworthiness Directives; GARMIN International Inc. GTX 330 Mode S Transponders and GTX 330D Diversity Mode S Transponders

  The FAA adopts a new airworthiness directive (AD) for certain GARMIN International Inc. GTX 330/GTX 330D Mode S transponders that are installed on aircraft. This AD requires you to install GTX 330/330D Software Upgrade Version 3.03, 3.04, or 3.05. This AD is the result of observations that the GTX 330 and GTX 330D may…

  Atlas AD → Federal Register ↗

• Dec 30, 2003

  Airworthiness Directives; GARMIN International Inc. GTX 330 Mode S Transponders and GTX 330D Diversity Mode S Transponders

  The FAA proposes to adopt a new airworthiness directive (AD) for certain GARMIN International Inc. GTX 330/GTX 330D Mode S transponders. This proposed AD would require you to install GTX 330/ 330D Software Upgrade Version 3.03. This proposed AD is the result of observations that the GTX 330 and GTX 330D may detect, fr…

  Atlas AD → Federal Register ↗

• Oct 3, 2002

  Airworthiness Directives; SOCATA-Groupe AEROSPATIALE Model TB 21 Airplanes

  This amendment adopts a new airworthiness directive (AD) that applies to certain SOCATA--Groupe AEROSPATIALE (Socata) Model TB 21 airplanes. This AD requires you to modify the exhaust system. This AD is the result of mandatory continuing airworthiness information (MCAI) issued by the airworthiness authority for France…

  Atlas AD → Federal Register ↗

• Jul 2, 2002

  Airworthiness Directives; SOCATA-Groupe AEROSPATIALE Model TB 21 Airplanes

  This document proposes to adopt a new airworthiness directive (AD) that would apply to certain SOCATA--Groupe AEROSPATIALE (Socata) Model TB 21 airplanes. This proposed AD would require you to modify the exhaust system. This proposed AD is the result of mandatory continuing airworthiness information (MCAI) issued by t…

  Atlas AD → Federal Register ↗

• May 23, 2001

  Airworthiness Directives; Honeywell KC 225 Automatic Flight Control Systems

  This amendment adopts a new airworthiness directive (AD) that applies to certain Honeywell KC 225 automatic flight control systems (AFCS) that are installed on airplanes. This AD requires you to inspect the KC 225 AFCS to determine the computer modifications (Mods) that are incorporated, deactivate any units with only…

  Atlas AD → Federal Register ↗

• Nov 30, 1999

  Airworthiness Directives; Precise Flight, Inc. Model SVS III Standby Vacuum Systems

  This amendment adopts a new airworthiness directive (AD) that applies to all aircraft equipped with Precise Flight, Inc. Model SVS III standby vacuum systems installed in accordance with the applicable supplemental type certificate (STC) or through field approval. This AD requires incorporating revised operating limit…

  Atlas AD → Federal Register ↗

• Jul 7, 1999

  Airworthiness Directives; Precise Flight, Inc. Model SVS III Standby Vacuum Systems

  This document proposes to adopt a new airworthiness directive (AD) that would apply to all U.S. owners and operators of aircraft equipped with Precise Flight, Inc. Model SVS III standby vacuum systems installed in accordance with the applicable supplemental type certificate (STC) or through field approval. The propose…

  Atlas AD → Federal Register ↗

• Sep 3, 1998

  Airworthiness Directives; SOCATAGroupe AEROSPATIALE Models TB20 and TB21 Airplanes

  This amendment adopts a new airworthiness directive (AD) that applies to certain SOCATA--Groupe AEROSPATIALE (Socata) Models TB20 and TB21 airplanes. This AD requires repetitively inspecting the main landing gear (MLG) attachment bearing (using a dye penetrant method) for cracks, and if cracks are found, replacing the…

  Atlas AD → Federal Register ↗

• Jun 26, 1998

  Airworthiness Directives; SOCATAGroupe AEROSPATIALE Models TB20, and TB21 Airplanes

  This document proposes to adopt a new airworthiness directive (AD) that would apply to certain SOCATA--Groupe AEROSPATIALE (Socata) Models TB20 and TB21 airplanes. The proposed action would require repetitively inspecting the main landing gear (MLG) attachment bearing (using a dye penetrant method) for cracks, and if…

  Atlas AD → Federal Register ↗

• Feb 10, 1998

  Airworthiness Directives; SOCATA-Groupe AEROSPATIALE Models TB9, TB10, TB20, TB21, and TB200 Airplanes

  This amendment adopts a new airworthiness directive (AD) that applies to certain Socata-Groupe Aerospatiale (Socata) Models TB9, TB10, TB20, TB21, and TB200 airplanes. This AD requires inspecting the bolts and spacers of the upper attachments of the front belts for cracks, dents, etc. (damage); replacing any damaged b…

  Atlas AD → Federal Register ↗

• Nov 7, 1997

  Airworthiness Directives; SOCATAGroupe AEROSPATIALE Models TB9, TB10, TB20, TB21, and TB200 Airplanes

  This document proposes to adopt a new airworthiness directive (AD) that would apply to certain SOCATA--Groupe AEROSPATIALE (Socata) Models TB9, TB10, TB20, TB21, and TB200 airplanes. The proposed AD would require inspecting the bolts and spacers of the upper attachments of the front belts for cracks, dents, etc. (dama…

  Atlas AD → Federal Register ↗

• Mar 28, 1995

  Airworthiness Directives; Textron Lycoming O-360, LO-360, HO-360, HIO-360, TIO-360, LIO-360, AEIO-360, O-540, IO-540, TIO-540, LTIO-540, IVO-540, AEIO-540, TIO-541, and IO-720 Series Reciprocating Engines

  This document publishes in the Federal Register an amendment adopting Airworthiness Directive (AD) 95-07-01 that was sent previously to all known U.S. owners and operators of Textron Lycoming O-360, LO- 360, HO-360, HIO-360, TIO-360, LIO-360, AEIO-360, O-540, IO-540, TIO- 540, LTIO-540, IVO-540, AEIO-540, TIO-541, and…

  Atlas AD → Federal Register ↗

05 /  Special Airworthiness Information Bulletins

Advisories applicable to SOCATA TB21

1 SAIB on file. SAIBs are FAA advisory notices — not mandatory like ADs, but worth reviewing for service bulletins and emerging issues.

• 08/14/2006

  SAIB CE-06-63

  SAIB CE-06-63 —

  Read → DRS ↗

06 /  Supplemental Type Certificates

Modifications approved for SOCATA TB21

47 STCs on file — every FAA-approved modification, alteration, or installation for this aircraft. STOL kits, avionics, fuel systems, floats, engine swaps, you name it.

• 04/16/2020

  STC SA00826WI-D

  Installation of Bendix/King KFC 225 automatic flight control system

  Honeywell International Inc

  Atlas STC → DRS ↗

• 04/16/2020

  STC SA00827WI-D

  Installation of Bendix/King KMD 150 MFD Multi-Function Display.

  Honeywell International Inc

  Atlas STC → DRS ↗

• 07/08/2008

  STC SA00156WI

  Installation of TKS anti-icing system components, with placard stating 'Flight into known icing conditions is prohibited.'

  CAV Aerospace Inc.

  Atlas STC → DRS ↗

• 06/08/2006

  STC SA1346GL

  Installation of a Shadin Company Digital Fuel Flow Indicating System.

  Shadin Avionics

  Atlas STC → DRS ↗

• 11/17/2005

  STC SA6017NM

  Installation of an electronic digital engine tachometer.

  Horizon Instruments Inc

  Atlas STC → DRS ↗

• 11/07/2003

  STC SA4005NM (Page 2)

  Precise Flight Inc. Pulselite Control System

  Precise Flight Inc

  Atlas STC → DRS ↗

• 11/03/2003

  STC SA2683NM

  Installation of Precise Flight, Inc. stand-by vacuum system (SVS)

  Precise Flight Inc

  Atlas STC → DRS ↗

• 08/11/2003

  STC SA00954SE (1 OF 2)

  Installation of J.P. Instruments (JPI) Primary Temperature Indicating System in accordance with JPI Installation Manual for the EDM 711, Report 106P, Revision B, dated August 2, 20…

  J P Instruments

  Atlas STC → DRS ↗

• 02/26/2003

  STC SA02154AK

  Installation of the UPS Aviation Technologies, Inc, Apollo MX20 multi-function display, P/N 430-0270-500.

  UPS Aviation Technologies

  Atlas STC → DRS ↗

• 10/15/2002

  STC SA00068SE

  Installation of fuel flow/pressure instruments. (W/TSIO-360-MB1)

  Electronics International Inc.

  Atlas STC → DRS ↗

• 08/14/2002

  STC SA02154AK

  Installation of the UPS Aviation Technologies, Inc, Apollo MX20 multi-function display, P/N 430-0270-500.

  UPS Aviation Technologies

  Atlas STC → DRS ↗

• 04/19/2002

  STC SA00432SE (PG 1)

  Installation of EGT 701 series fuel flow instrument.

  J P Instruments

  Atlas STC → DRS ↗

• 01/14/2002

  STC SA6017NM

  Installation of an electronic digital engine tachometer.

  Horizon Instruments Inc

  Atlas STC → DRS ↗

• 10/19/2001

  STC SA02214AT

  Installation of flap and aileron gap seals.

  Madisonville Flying Service

  Atlas STC → DRS ↗

• 08/28/2001

  STC SA8401SW-D

  Installation of S-TEC System 55/55X Two Axis Automatic Flight Guidance System, Model ST-547

  S-TEC Corporation

  Atlas STC → DRS ↗

• 08/23/2001

  STC SA8400SW-D

  Installation of S-TEC System 55/55X Two Axis Automatic Flight Guidance System, Model ST-546

  S-TEC Corporation

  Atlas STC → DRS ↗

• 08/10/2001

  STC SA00954SE

  Installation of J.P. Instruments (JPI) Primary Temperature Indicating System in accordance with JPI Installation Manual for the EDM 711, Report 106P, Revision B, dated August 2, 20…

  J P Instruments

  Atlas STC → DRS ↗

• 06/19/2001

  STC SA2683NM

  Installation of Precise Flight, Inc. stand-by vacuum system (SVS)

  Precise Flight Inc

  Atlas STC → DRS ↗

• 06/04/2001

  STC SA4005NM (Page 2)

  Precise Flight Inc. Pulselite Control System

  Precise Flight Inc

  Atlas STC → DRS ↗

• 08/29/2000

  STC SA01280CH

  Installation of Challenger Spin-On Oil Filters.(For Cessna 182 model, s/n 67042 and up) (For Cessna 421C model, s/n 1017 thru 1404)

  D & K Aviation

  Atlas STC → DRS ↗

• 04/05/2000

  STC SA01192CH

  Installation of a Hartzell HC-C3YR-1RF/F7693F(B) propeller, A-2295-3(P) spinner, and C-4686 anti-icing kit.

  Hartzell Propeller Inc

  Atlas STC → DRS ↗

• 01/24/2000

  STC SA00826WI-D

  Installation of Bendix/King KFC 225 automatic flight control system

  Honeywell International Inc

  Atlas STC → DRS ↗

• 01/20/2000

  STC SA00827WI-D

  Installation of Bendix/King KMD 150 MFD Multi-Function Display.

  Honeywell International Inc

  Atlas STC → DRS ↗

• 05/02/1997

  STC SA00432SE (PG 1)

  Installation of EGT 701 series fuel flow instrument.

  J P Instruments

  Atlas STC → DRS ↗

• 10/18/1996

  STC SA157NE

  Installation of Graphic Engine Monitor System Model GEM-602 S/N 403 and GEM-603 S/N001126and subsequent.

  Insight Instrument Corp

  Atlas STC → DRS ↗

• 10/09/1996

  STC SA7125SW-D

  Installation of S-TEC System 40/50, Single and Two Axis Automatic Flight Guidance System, ST-352-40/50.

  S-TEC Corporation

  Atlas STC → DRS ↗

• 09/15/1995

  STC SA7214SW-D

  Installation of S-TEC system 40/50, single and two axis automatic flight guidance systems, Model ST-462

  S-TEC Corporation

  Atlas STC → DRS ↗

• 09/14/1995

  STC SA7215SW-D

  Installation of S-TEC System 60 two axis automatic flight guidance system, model ST-460, with optional automatic electric trim system.

  S-TEC Corporation

  Atlas STC → DRS ↗

• 06/03/1994

  STC SA5924NM

  Installation of RPM instrument.

  Electronics International

  Atlas STC → DRS ↗

• 05/03/1994

  STC SA00156WI

  Installation of TKS anti-icing system components, with placard stating 'Flight into known icing conditions is prohibited.'

  Aerospace Systems & Technologies Inc.

  Atlas STC → DRS ↗

+ 17 more STCs on file

04 /  Regulations watching this type

Advisory Circulars and Federal Register activity for SOCATA TB21

05 /  Aircraft of this type

All 50 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 →