# N922MC: 1970 Bell 206A-1

- Status: Valid registration
- Airframe: [Bell 206A-1](https://openairdocs.org/model/bell-206a-1) (registry code 1181510, 5 seats)
- Engine: [Allison 250-C20 series](https://openairdocs.org/engine/allison-250-c20-series) (registry code 03020)
- Data sheets: [TCDS H2SW](https://openairdocs.org/tcds/H2SW) (Bell Textron Canada Limited), [TCDS E4CE](https://openairdocs.org/tcds/E4CE) (Rolls-Royce Corporation) (OpenAirDocs)
- Serial number: 68-16829
- Year built: 1970
- Type: Rotorcraft
- Engine type: Turbo-shaft
- Airworthiness: Experimental, exhibition
- Airworthiness date: May 25, 2004
- Certificate issued: February 25, 2025
- Expires: February 29, 2032
- Mode S code: ACC6AE
- Registered owner: [Geco Inc](https://openairdocs.org/faa-owner/GECO%20INC)
- Location: [Wilmington, DE](https://openairdocs.org/faa-place/DE/Wilmington)
- Owner type: Corporation
- Owner's area on the map: 39.8187° N, 75.5062° W: Placed by OpenAirDocs at the center of ZIP code 19810, within about 2 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=922MC
- Page: https://openairdocs.org/aircraft/N922MC

From the FAA registry file of October 24, 2026. ADs below are matched by the registry's airframe and engine model codes. They may apply; each AD's applicability can narrow it by serial number, part number or installed equipment. This is not a compliance determination. The registry lists only the engine series, so ADs for every Allison 250-C20 model are included.

## ADs that may apply (OpenAirDocs): 56 in force

### Matched by airframe (Bell 206A-1)

- [AD 2023-11-07](https://openairdocs.org/ad/2023-11-07): Ground Proximity System · Airbus Helicopters 47, 206, 210 and 237 more. Effective Jun 22, 2023
- [AD 2023-06-05](https://openairdocs.org/ad/2023-06-05): Tail Rotor Drive Shaft · Bell Textron Canada 206A, 206A-1 (OH-58A), 206B and 5 more. Effective May 19, 2023
- [AD 2022-20-04](https://openairdocs.org/ad/2022-20-04): Tail Rotor Drive Shaft · Bell Textron Canada 206, 206A, 206A-1 (OH-58A) and 6 more. Effective Dec 23, 2022
- [AD 2021-19-01](https://openairdocs.org/ad/2021-19-01): Cabin Equipment/Furnishings · Shoulder harness restraint system (Bell Helicopter Textron STC SH2073SO or SH2751SO). Effective Oct 13, 2021
- [AD 2012-12-11](https://openairdocs.org/ad/2012-12-11): Engine EFT/TOT Indicating System · Supplemental lighting system (Aviation Specialties Unlimited STC SR01383SE). Effective Jul 24, 2012
- [AD 2009-07-52](https://openairdocs.org/ad/2009-07-52): Cyclic control lever assembly · Bell Helicopter Textron Canada 206A, 206A-1 (OH-58A), 206B and 7 more. Effective May 1, 2009
- [AD 2005-21-03](https://openairdocs.org/ad/2005-21-03): Tail rotor blade (blade) root doublers (doublers) · Bell Helicopter Textron Canada 206A, 206A-1 (OH-58A), 206B and 5 more. Effective Nov 21, 2005
- [AD 2003-13-14](https://openairdocs.org/ad/2003-13-14): Chip detector · Bell Helicopter Textron Canada 206A, 206A-1 (OH-58A), 206B and 5 more. Effective Aug 12, 2003
- [AD 2002-20-05](https://openairdocs.org/ad/2002-20-05): Rescue hoists · Agusta A109, A109A, A109A II and 31 more. Effective Nov 7, 2002
- [AD 81-18-01 R1](https://openairdocs.org/ad/81-18-01-R1): Trunnion · Bell Helicopter Textron Canada 206A, 206A-1 (OH-58A), 206B and 3 more. Effective Jan 15, 2002
- [AD 96-06-04](https://openairdocs.org/ad/96-06-04): Driveshaft Assembly  Inspection · Bell Helicopter Textron Canada 206A, 206A-1 (OH-58A), 206B and 1 more. Effective Apr 25, 1996
- [AD 95-11-14](https://openairdocs.org/ad/95-11-14): Crosstubes · Bell Helicopter Textron Canada 206A, 206A-1 (OH-58A), 206B and 5 more. Effective Jun 30, 1995
- [AD 95-09-06](https://openairdocs.org/ad/95-09-06): Fuel Valve Switch · Bell Helicopter Textron Canada 206A, 206A-1 (OH-58A), 206B and 4 more. Effective Jun 8, 1995
- [AD 94-19-02](https://openairdocs.org/ad/94-19-02): Swashplate Support Assembly · Bell Helicopter Textron Canada 206A, 206A-1 (OH-58A), 206B and 4 more. Effective Sep 28, 1994
- [AD 92-09-07](https://openairdocs.org/ad/92-09-07): Vertical Fin Supports · Bell Helicopter Textron Canada 206A, 206A-1 (OH-58A), 206B and 1 more. Effective Jun 29, 1992
- [AD 90-21-03](https://openairdocs.org/ad/90-21-03): Tail Rotor Blade Assembly · Bell Helicopter Textron Canada 206A, 206A-1 (OH-58A), 206B and 4 more. Effective Aug 14, 1991
- [AD 78-11-02 R1](https://openairdocs.org/ad/78-11-02-R1): Rotor Blade Straps · Bell Helicopter Textron Canada 206A, 206A-1 (OH-58A), 206B and 4 more. Effective Dec 15, 1988
- [AD 85-26-06](https://openairdocs.org/ad/85-26-06): Tail Rotor Blades · Bell Helicopter Textron Canada 206A, 206A-1 (OH-58A), 206B and 4 more. Effective Jan 31, 1986
- [AD 80-18-04 R1](https://openairdocs.org/ad/80-18-04-R1): Main Rotor Trunnion · Bell Helicopter Textron Canada 206A, 206A-1 (OH-58A), 206B and 3 more. Effective Nov 24, 1980
- [AD 80-17-05](https://openairdocs.org/ad/80-17-05): Tail Rotor Blades · Bell Helicopter Textron Canada 206A, 206A-1 (OH-58A), 206B and 2 more. Effective Sep 10, 1980
- [AD 80-08-04](https://openairdocs.org/ad/80-08-04): Auxiliary Fuel System · Chadwick C-20 auxiliary fuel system (Phoenix Air-Atlanta STC SH129WE or SH139WE). Effective Apr 17, 1980
- [AD 76-15-03](https://openairdocs.org/ad/76-15-03): Main Rotor Blade Tension-Torsion Straps · Bell Helicopter Textron Canada 206A, 206A-1 (OH-58A), 206B and 1 more. Effective Jul 29, 1976
- [AD 76-04-09](https://openairdocs.org/ad/76-04-09): Main Rotor Hub Yokes · Bell Helicopter Textron Canada 206A, 206A-1 (OH-58A), 206B and 1 more. Effective Mar 30, 1976
- [AD 75-06-03](https://openairdocs.org/ad/75-06-03): Pitch Link Assembly · Bell Helicopter Textron Canada 206A, 206A-1 (OH-58A), 206B and 1 more. Effective Oct 20, 1975
- [AD 75-18-07](https://openairdocs.org/ad/75-18-07): Rotor Blade Pillow Block Assemblies · Bell Helicopter Textron Canada 206A, 206A-1 (OH-58A), 206B and 1 more. Effective Sep 19, 1975
- [AD 75-09-09](https://openairdocs.org/ad/75-09-09): Tail Rotor Control Tube · Bell Helicopter Textron Canada 206A, 206A-1 (OH-58A), 206B and 1 more. Effective Apr 23, 1975
- [AD 74-24-01](https://openairdocs.org/ad/74-24-01): Main Rotor Blade Grips · Bell Helicopter Textron Canada 206A, 206A-1 (OH-58A), 206B and 1 more. Effective Nov 15, 1974
- [AD 74-08-12](https://openairdocs.org/ad/74-08-12): Tail Boom Skin Splice · Bell Helicopter Textron Canada 206A, 206A-1 (OH-58A), 206B and 1 more. Effective May 14, 1974
- [AD 73-19-09](https://openairdocs.org/ad/73-19-09): Pitch Link Assemblies · Bell Helicopter Textron Canada 206A, 206A-1 (OH-58A), 206B and 1 more. Effective Sep 17, 1973
- [AD 73-19-08](https://openairdocs.org/ad/73-19-08): Strap Fittings and Pins · Bell Helicopter Textron Canada 206A, 206A-1 (OH-58A), 206B and 1 more. Effective Sep 15, 1973
- [AD 73-12-01](https://openairdocs.org/ad/73-12-01): Vertical Fin Skin Cracks · Bell Helicopter Textron Canada 206A, 206A-1 (OH-58A), 206B and 1 more. Effective Jul 1, 1973
- [AD 73-08-03](https://openairdocs.org/ad/73-08-03): Pylon Support Link · Bell Helicopter Textron Canada 206A, 206A-1 (OH-58A), 206B and 1 more. Effective Apr 18, 1973
- [AD 72-19-01](https://openairdocs.org/ad/72-19-01): Main Rotor Retention Straps · Bell Helicopter Textron Canada 206A, 206A-1 (OH-58A), 206B and 1 more. Effective Sep 15, 1972
- [AD 71-08-03](https://openairdocs.org/ad/71-08-03): Particle Separation Kit · Bell Helicopter Textron Canada 206A and 206A-1 (OH-58A). Effective Nov 18, 1971
- [AD 89-22-01 R1 L](https://openairdocs.org/ad/89-22-01-R1-L): Main Rotor Blades · Bell Helicopter Textron Canada 206A, 206A-1 (OH-58A), 206B and 4 more

### Matched by engine (Allison 250-C20 series)

- [AD 2022-10-06](https://openairdocs.org/ad/2022-10-06): Turbine Section · Rolls-Royce 250-C20, 250-C20B, 250-C20C (T63-A-720) and 9 more. Effective Jun 28, 2022
- [AD 2018-13-01](https://openairdocs.org/ad/2018-13-01): Turbine Governor · Rolls-Royce 250-C10 (T63-A-5), 250-C18, 250-C18A and 24 more. Effective Aug 16, 2018
- [AD 2006-16-04](https://openairdocs.org/ad/2006-16-04): Inspection of the fuel nozzle screen · Rolls-Royce 250-B15A, 250-B15E, 250-B15G and 43 more. Effective Sep 7, 2006
- [AD 2006-13-06](https://openairdocs.org/ad/2006-13-06): Gas producer rotor assembly tie bolts · Rolls-Royce 250-B17, 250-B17B, 250-B17C and 16 more. Effective Jul 26, 2006
- [AD 2005-10-13](https://openairdocs.org/ad/2005-10-13): Turbine energy absorbing ring · Rolls-Royce 250-B17B, 250-B17C, 250-B17D and 7 more. Effective Jun 22, 2005
- [AD 2004-26-09](https://openairdocs.org/ad/2004-26-09): Compressor Adaptor Couplings · Rolls-Royce 250-B17, 250-B17B, 250-B17C and 8 more. Effective Feb 8, 2005
- [AD 2001-24-12](https://openairdocs.org/ad/2001-24-12): Helical Torquemeter Gearshaft Assembly · Rolls-Royce 250-B17, 250-B17C, 250-B17D and 13 more. Effective Dec 19, 2001
- [AD 98-24-28](https://openairdocs.org/ad/98-24-28): Main Fuel Control Bellows · Rolls-Royce 250-B15A, 250-B15E, 250-B15G and 36 more. Effective Jan 7, 1999
- [AD 96-19-01](https://openairdocs.org/ad/96-19-01): Superior Air Parts Manufacture Approval (PMA) Bearings · Rolls-Royce 250-B15G, 250-B17F, 250-B17F/1 and 17 more. Effective Sep 26, 1996
- [AD 93-25-05](https://openairdocs.org/ad/93-25-05): Driveshaft Flex Coupling Bolts, Bushings, and Nuts · Rolls-Royce 250-C20S with STC SE2352NM. Effective Feb 22, 1994
- [AD 88-17-01](https://openairdocs.org/ad/88-17-01): Fuel Controls · Rolls-Royce 250-B17, 250-B17B, 250-B17C and 26 more. Effective Mar 1, 1989
- [AD 83-03-02 R1](https://openairdocs.org/ad/83-03-02-R1): Slotted Third Stage Turbine Wheels · Rolls-Royce 250-B17, 250-B17B, 250-B17C and 5 more. Effective Feb 28, 1984
- [AD 82-24-05](https://openairdocs.org/ad/82-24-05): Control Assembly and Power Turbine Governor Assembly · Rolls-Royce 250-B15A, 250-B15E, 250-B15G and 43 more. Effective Nov 26, 1982
- [AD 82-13-03](https://openairdocs.org/ad/82-13-03): Modify Engine High Pressure Fuel Control Filter Assembly · Rolls-Royce 250-C20 and 250-C20B. Effective Jul 1, 1982
- [AD 79-21-01 R1](https://openairdocs.org/ad/79-21-01-R1): Third Stage Turbine Wheel Blade · Rolls-Royce 250-B17, 250-B17B, 250-B17C and 3 more. Effective Jun 3, 1981
- [AD 78-14-08](https://openairdocs.org/ad/78-14-08): Fuel Pump Drive Spline · Rolls-Royce 250-C18, 250-C18A, 250-C18B and 3 more. Effective Oct 24, 1979
- [AD 77-15-12](https://openairdocs.org/ad/77-15-12): Power Turbine Coupling Nut · Rolls-Royce 250-B15A, 250-B15E, 250-B15G and 23 more. Effective Sep 23, 1977
- [AD 77-09-08](https://openairdocs.org/ad/77-09-08): Bleed Valve Diaphragm · Rolls-Royce 250-B17, 250-B17B, 250-C20 and 2 more. Effective Jul 18, 1977
- [AD 74-14-03](https://openairdocs.org/ad/74-14-03): Fuel Control Rigging · Rolls-Royce 250-C20. Effective Jul 10, 1974
- [AD 73-19-07](https://openairdocs.org/ad/73-19-07): Turbine Governor-To-Fuel Control Tube · Rolls-Royce 250-C20. Effective Sep 14, 1973
- [AD 72-03-06](https://openairdocs.org/ad/72-03-06): Turbine Wheels · Rolls-Royce 250-B15A, 250-B15E, 250-B15G and 9 more. Effective Feb 8, 1972

### Historical (superseded or no longer in force)

- [AD 2021-26-08](https://openairdocs.org/ad/2021-26-08) (historical): Tail Rotor Drive Shaft · Bell Textron Canada 206, 206A, 206A-1 and 7 more. Effective Jan 27, 2022
- [AD 2021-23-13](https://openairdocs.org/ad/2021-23-13) (historical): Ground Proximity System · Airbus Helicopters K-225, K-190A, K-240 and 237 more. Effective Dec 9, 2021
- [AD 2009-07-51](https://openairdocs.org/ad/2009-07-51) (historical): Lever assembly bearing · Bell Helicopter Textron 206A, 206A-1 (OH-58A), 206B and 7 more
- [AD 81-18-01](https://openairdocs.org/ad/81-18-01) (historical): Main Rotor Trunnions · Bell Helicopter Textron 206A, 206A-1 (OH-58A), 206B and 3 more. Effective Sep 22, 1981
- [AD 2017-18-14](https://openairdocs.org/ad/2017-18-14) (historical): Turbine Section · Rolls-Royce 250-C20, 250-C20B, 250-C20F and 8 more. Effective Oct 13, 2017
- [AD 2015-02-22](https://openairdocs.org/ad/2015-02-22) (historical): Repetitive visual inspections · Rolls-Royce 250-B17, 250-B17B, 250-B17C and 15 more. Effective Mar 9, 2015
- [AD 2012-14-06](https://openairdocs.org/ad/2012-14-06) (historical): Released turbine blades and shrouds · Rolls-Royce 250-C20, 250-C20B and 250-C20R/2. Effective Aug 14, 2012
- [AD 2004-24-09](https://openairdocs.org/ad/2004-24-09) (historical): Fuel nozzle · Rolls-Royce 250-B15A, 250-B15E, 250-B15G and 40 more. Effective Jan 5, 2005
- [AD 2001-20-51](https://openairdocs.org/ad/2001-20-51) (historical): Helical Torquemeter Gearshaft Assembly · 250-B17, 250-B17C, 250-B17D and 12 more

## Information bulletins (advisory) (2 in force)

- [SAIB SW-12-45](https://openairdocs.org/saib/SW-12-45): Garmin Model 400W/500W Series GPS-WAAS Navigation System. Issued Oct 3, 2012
- [SAIB CE-01-10](https://openairdocs.org/saib/CE-01-10): . Issued Jan 24, 2001

## NTSB investigations

None matched to N922MC.

## FAA accident and incident reports

None matched to N922MC.

## Service difficulty reports

None filed for this aircraft. Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model.

## STCs that may be installed (OpenAirDocs) (125, first 50)

Approved for this aircraft's airframe or engine model, in force first, then newest. The registry doesn't record which STCs an aircraft has; its records do.

### Approved for the airframe (Bell 206A-1)

- [STC SR00368SE](https://openairdocs.org/stc/SR00368SE): Installation of a color video camera on either the left, right or both horizontal stabilizers. Turbolyft USA Corporation
- [STC SR00643SE](https://openairdocs.org/stc/SR00643SE): Installation of Geneva Aviation Video System. Turbolyft USA Corporation
- [STC SR12375NY](https://openairdocs.org/stc/SR12375NY): Demonstration of Aircraft Equipment Configurations Tolerance to Transmitting Portable Electronic Devices (TPED) in Part 27 Aircraft in accordance with the FAA-approved Rotorcraft Equipment Compatibility List (RECL). Kilroy Aviation, LLC
- [STC SR04464NY](https://openairdocs.org/stc/SR04464NY): Installation of the iPad Mount. Avio Design Group Inc
- [STC SR00521SE](https://openairdocs.org/stc/SR00521SE): Installation of Geneva Aviation Audio System. AEM USA Inc
- [STC SR02301SE](https://openairdocs.org/stc/SR02301SE): Installation of Geneva Aviation 28 - 14 VDC Power Converter. AEM USA Inc
- [STC SR02445SE](https://openairdocs.org/stc/SR02445SE): Installation of P178 Failsafe Audio Mixer. AEM USA Inc
- [STC SR11898NY](https://openairdocs.org/stc/SR11898NY): Installation of Outerlink Corporation Air IP system. Sterling Helicopter
- [STC SR04842NY](https://openairdocs.org/stc/SR04842NY): Installation of RMCI Inc. Expandable Rotorcraft Diagnostic System (XRDS). Sterling Helicopter
- [STC SR00532SE](https://openairdocs.org/stc/SR00532SE): Installation of Certified Technology quick release door pins. Certified Technology
- [STC SR00425SE](https://openairdocs.org/stc/SR00425SE): Installation of a satellite phone. Turbolyft USA Corporation
- [STC SR00891LA](https://openairdocs.org/stc/SR00891LA): Installation of aft utility mount. Airfilm Camera Systems LLC
- [STC SR04637CH](https://openairdocs.org/stc/SR04637CH): Replacement of existing main ship battery with Lithium Ion Battery and installation of Annunciator Control Panel. Airwolf Aerospace LLC
- [STC SH3319NM](https://openairdocs.org/stc/SH3319NM): Installation of Precise Flight Pulselite Control Unit in the Landing /Taxi Recognition Visual Control Light system,. Precise Flight Inc
- [STC SR03948NY](https://openairdocs.org/stc/SR03948NY): Installation of Frameless Crew Seat Cushion. HELIFAB East LLC
- [STC SR03512AT](https://openairdocs.org/stc/SR03512AT): Installation of HID Landing and Taxi Lights. Whelen Aerospace Technologies
- [STC SR04458NY](https://openairdocs.org/stc/SR04458NY): Astronics (Max-Viz) 1200 or 1400 EVS Installation. Avio Design Group Inc
- [STC SH1152NW](https://openairdocs.org/stc/SH1152NW): Installation of the Automatic Flagman Model 135 Control Stick Grip. Air Products & Parts LLC
- [STC SR04145AT](https://openairdocs.org/stc/SR04145AT): Installation of a Talon Retractable Searchlight and Landing Light using LED lamps. Aaxico Technical Services Inc
- [STC SR04584NY](https://openairdocs.org/stc/SR04584NY): Installation of the COVID Barrier. Avio Design Group Inc
- [STC SR02704SE](https://openairdocs.org/stc/SR02704SE): Installation and maintenance of the Sunspot 36 and 46 series lights. AeroLED's Holdings LLC
- [STC SR04453CH](https://openairdocs.org/stc/SR04453CH): Installation of Appareo Systems LLC Stratus ES & Stratus ESG ADS-B transponder. Appareo Systems LLC
- [STC SR02295LA](https://openairdocs.org/stc/SR02295LA): Installation of Garmin Model G500H Flight Display System. Garmin International Inc
- [STC SR01508SE](https://openairdocs.org/stc/SR01508SE): Fabrication of Dual Tail Boom Strake System. BLR Aerospace LLC
- [STC SR00359BO](https://openairdocs.org/stc/SR00359BO): Installation of Parmetheus Plus LED PAR36 and PAR46 taxi and landing lights. Whelen Aerospace Technologies
- [STC SR00708SE](https://openairdocs.org/stc/SR00708SE): Installation and inspection of emergency medical oxygen and electical system (MedPak). LifePort LLC
- [STC SR00821DE](https://openairdocs.org/stc/SR00821DE): Installation of Automatic Dependent Surveillance - Broadcast (ADS-B) Out and in functionality using the BendixKing KT74 Transponder and qualified position sensor and ADS-B In Receiver. Peregrine
- [STC SA00475SE](https://openairdocs.org/stc/SA00475SE): Replacement of the original land gear skid tubes and saddles with DART Aerospace Model D206-642 skid tubes and saddles. Dart Aerospace USA Inc
- [STC SR02253SE](https://openairdocs.org/stc/SR02253SE): Fabrication of Geneva Aviation P162 Cross-Tube Antenna Mounts. Dart Aerospace USA Inc
- [STC SR02258SE](https://openairdocs.org/stc/SR02258SE): Installation of a tail rotor pedal lockout kit. Dart Aerospace USA Inc
- [STC SR00812DE](https://openairdocs.org/stc/SR00812DE): Installation of Honeywell Sky Connect Tracker III system. Cert Works LLC
- [STC SH2828SW](https://openairdocs.org/stc/SH2828SW): Sloping pedestal and instrument. Associated Air Center, Inc. - c/o CT Corporation System
- [STC SR02657LA](https://openairdocs.org/stc/SR02657LA): Installation of a Trakkabeam A800 Searchlight on the Aero Pacific AP407UM01 Aft Utility Mount (STC SR00891LA) of the affected helicopters. Meeker Aviation Services Ltd
- [STC SR02413LA](https://openairdocs.org/stc/SR02413LA): Installation of an AKV, Inc Exceedence and Trend Monitoring System kit P/N ETM1000. AKV Inc
- [STC SR02487AK](https://openairdocs.org/stc/SR02487AK): Installation of L-3 Communications Avionics Systems ESI-500 Standby Instrument System. ADS-B Technologies, LLC
- [STC SH1018EA](https://openairdocs.org/stc/SH1018EA): Installation of Casey shroud type heater. Rilpa Enterprises, Ltd
- [STC SA00780SE](https://openairdocs.org/stc/SA00780SE): Installation of the True Lock Safety Retention Axle Lock Nut System. True Lock LLC
- [STC SR03448NY](https://openairdocs.org/stc/SR03448NY): Installation of a TDFM-9000 Multiband Transceiver. Technisonic Industries Limited
- [STC SR02964CH](https://openairdocs.org/stc/SR02964CH): Install Airwolf Aerospace, LLC Tension-Torsion Strap Assemblies, P/N AA-206-011-154-105/-107. Airwolf Filter Corporation
- [STC SR02394AK](https://openairdocs.org/stc/SR02394AK): Replacement of existing landing and/or hover light bulbs with Light Emitting Diode (LED) lighting system. Seaplanes North LLC
- [STC SR04172AT](https://openairdocs.org/stc/SR04172AT): Installation of replacement fuel cell assemblies. FFC Manufacturing
- [STC SR03465NY](https://openairdocs.org/stc/SR03465NY): Installation of Replacement Engine Mount Kits. Dart Aerospace Limited
- [STC SR03383NY](https://openairdocs.org/stc/SR03383NY): Installation of a Latitude Technologies IONODE Flight Data Monitoring (FDM). Latitude Technologies Corporation
- [STC SR01866CH](https://openairdocs.org/stc/SR01866CH): Install Electrically Actuated Retractable Microwave Antenna on Landing Gear Skid. Broadcast Microwave Services Inc
- [STC SR03352NY](https://openairdocs.org/stc/SR03352NY): Installation of Skynode S200 SATPHONE/TRACKER. SKYTRAC Systems Ltd
- [STC SR03272NY](https://openairdocs.org/stc/SR03272NY): Installation of a Technisonic Industries Limited TDFM-136B Transceiver. Technisonic Industries Limited
- [STC SH3592SW](https://openairdocs.org/stc/SH3592SW): Installation of rubber mounted crew windows. Bell Helicopter Textron Inc
- [STC SH3593SW](https://openairdocs.org/stc/SH3593SW): Installation of rubber mounted passenger windows. Bell Helicopter Textron Inc
- [STC SR00313AT](https://openairdocs.org/stc/SR00313AT): Installation of B.A.P. Full-Length Hard Surface Skid Shoes, P/N 206-112-401-N.T.H. Brauer Aerospace Products, Inc. Lists 206 Series
- [STC SR03059NY](https://openairdocs.org/stc/SR03059NY): Installation of an A790 Loud Hailer Controller. Technisonic Industries Limited

All 125: https://openairdocs.org/aircraft/N922MC/stcs.md

## Related

- Other Bell 206A-1 aircraft: https://openairdocs.org/model/bell-206a-1/aircraft.md
- The Allison 250-C20 series engine: https://openairdocs.org/engine/allison-250-c20-series.md

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