The STC search system is a complimentary service provided to the aviation community. We hope you find it useful. We do not provide access to STC engineering. For that you need to contact the STC holder directly. Our primary product is a comprehensive library of aviation regulations and standards, including tools for generating Airworthiness Directive compliance reports.

No. of STCs: 11

STC Holder: Midwest Aerospace TC LLC 9465 Joliet Street, St. John, IN 46373		If you are an STC Holder, Contact us to have your company added here!
STC No.: SR00026DE	Status: Current	App Date: 02/05/1991	Rev Date: 02/08/2023
Description: Installation of tailboom 24 inch plug extension, commercial style main rotor blades, and rotorhead.
TC Nos.: H13WE, H1RM, H3NM, H3SO, H5SO, H7SO
Models: Garlick Helicopters Inc.UH-1B, UH-1B Hawkins & Powers Aviation Inc.UH-1B International Helicopters Inc.UH-1B Richards Heavylift Helo Inc.UH-1B Williams Helicopter CorporationUH-1B
ACO: AIR-760: Central Certification Branch CHI

STC Holder: Midwest Aerospace TC LLC 9465 Joliet Street, St. John, IN 46373		If you are an STC Holder, Contact us to have your company added here!
STC No.: SR00073DE	Status: Current	App Date: 08/11/1993	Rev Date: 02/08/2023
Description: Replacement of Lycoming T53-L-13 series powerplant
TC Nos.: H13WE, H1RM, H3NM, H3SO, H5SO, H7SO
Models: Garlick Helicopters Inc.UH-1B, UH-1B Hawkins & Powers Aviation Inc.UH-1B International Helicopters Inc.UH-1B Richards Heavylift Helo Inc.UH-1B Williams Helicopter CorporationUH-1B
ACO: AIR-760: Central Certification Branch CHI

STC Holder: Midwest Aerospace TC LLC 9465 Joliet Street, St. John, IN 46373		If you are an STC Holder, Contact us to have your company added here!
STC No.: SR00119DE	Status: Current	App Date: 11/08/1993	Rev Date: 02/08/2023
Description: Installation of an upgraded 42 degree Tail Rotor gearbox, P/N 212-040-003, and Control Cables
TC Nos.: H13WE, H1RM, H3NM, H3SO, H4NM, H5NM, H5SO, H7SO, H8NM, H9NM
Models: Bell Helicopter Textron Inc.TH-1L, UH-1E, UH-1L Hawkins & Powers Aviation Inc.UH-1B International Helicopters Inc.UH-1B Overseas Aircraft Support IncTH-1L, UH-1E, UH-1L Richards Heavylift Helo Inc.UH-1B Rotorcraft Development CorporationHH-1K, TH-1L, UH-1B, UH-1B, UH-1E, UH-1L Smith HelicoptersUH-1E West Coast FabricationsUH-1E
ACO: AIR-760: Central Certification Branch CHI

STC Holder: Midwest Aerospace TC LLC 9465 Joliet Street, St. John, IN 46373		If you are an STC Holder, Contact us to have your company added here!
STC No.: SR00143DE	Status: Current	App Date: 11/08/1993	Rev Date: 02/08/2023
Description: Installation of an upgraded 42 degree Tail Rotor gearbox, P/N 212-040-003
TC Nos.: H13WE, H15NM, H2NM, H6SO, H7NE, H7SO, R00002RC, R00005SE, R00007DE
Models: Arrow Falcon Exporters Inc.UH-1H California Department of ForestryUH-1F Global Helicopter Technology Inc.UH-1H Hagglund Helicopters LLCUH-1H Northwest Rotorcraft LLCUH-1H Overseas Aircraft Support IncUH-1H Rotorcraft Development CorporationUH-1H Southwest Florida Aviation InternationalUH-1H Tamarack Helicopters Inc.UH-1F
ACO: AIR-760: Central Certification Branch CHI

STC Holder: Midwest Aerospace TC LLC 9465 Joliet Street, St. John, IN 46373		If you are an STC Holder, Contact us to have your company added here!
STC No.: SR00144DE	Status: Current	App Date: 11/08/1993	Rev Date: 02/08/2023
Description: Installation of an upgraded 42 degree tail rotor gearbox.
TC Nos.: H1SW
Models: Bell Helicopter Textron Inc.204B
ACO: AIR-760: Central Certification Branch CHI

STC Holder: Midwest Aerospace TC LLC 9465 Joliet Street, St. John, IN 46373		If you are an STC Holder, Contact us to have your company added here!
STC No.: SR09167RC	Status: Current	App Date: 03/19/1997	Rev Date: 02/08/2023
Description: Replacement of tail rotor control roller chain.
TC Nos.: H13WE, H3NM, H5NM
Models: Garlick Helicopters Inc.HH-1K, TH-1L, UH-1B, UH-1B, UH-1E, UH-1H, UH-1L
ACO: AIR-760: Central Certification Branch CHI

STC Holder: Midwest Aerospace TC LLC 9465 Joliet Street, St. John, IN 46373		If you are an STC Holder, Contact us to have your company added here!
STC No.: SR09176RC	Status: Current	App Date: 03/19/1997	Rev Date: 02/08/2023
Description: Modification of the vertical fin spar
TC Nos.: H13WE, H15NM, H3SO, H6SO
Models: Garlick Helicopters Inc.UH-1H Hagglund Helicopters LLCUH-1H Richards Heavylift Helo Inc.UH-1H Southwest Florida Aviation InternationalSW205 (UH-1H)
ACO: AIR-760: Central Certification Branch CHI

STC Holder: Midwest Aerospace TC LLC 9465 Joliet Street, St. John, IN 46373		If you are an STC Holder, Contact us to have your company added here!
STC No.: SR09177RC	Status: Current	App Date: 04/07/1997	Rev Date: 02/08/2023
Description: Modification of the vertical fin spar
TC Nos.: H13WE, H1RM, H3NM, H3SO, H4NM, H5NM, H5SO, H6SO, H7SO, H8NM, R00012AT
Models: Bell Textron Inc.TH-1L, UH-1E, UH-1L Garlick Helicopters Inc.UH-1B, UH-1B International Helicopters Inc.UH-1B Overseas Aircraft Support Inc.TH-1L, UH-1E, UH-1L Red Tail Flying Services LLCUH-1B Richards Heavylift Helo Inc.UH-1B Rotorcraft Development CorporationHH-1K, TH-1L, UH-1E, UH-1L Smith HelicoptersUH-1E Southwest Florida Aviation InternationalUH-1B WSH LLCUH-1B
ACO: AIR-760: Central Certification Branch CHI

STC Holder: Midwest Aerospace TC LLC 9465 Joliet Street, St. John, IN 46373		If you are an STC Holder, Contact us to have your company added here!
STC No.: SR09202RC	Status: Current	App Date: 10/19/1998	Rev Date: 02/08/2023
Description: Installation of a vertical fin spar.
TC Nos.: H1SW
Models: Bell Helicopter Textron Inc.204B
ACO: AIR-760: Central Certification Branch CHI

STC Holder: Midwest Aerospace TC LLC 9465 Joliet Street, St. John, IN 46373		If you are an STC Holder, Contact us to have your company added here!
STC No.: SR09222RC	Status: Current	App Date: 10/19/1998	Rev Date: 02/02/2009
Description: Installation of a modified fin spar
TC Nos.: H12NM
Models: Rotorcraft Development CorporationTH-1F, UH-1F, UH-1P
ACO: AIR-760: Central Certification Branch CHI

STC Holder: Midwest Aerospace TC LLC 9465 Joliet Street, St. John, IN 46373		If you are an STC Holder, Contact us to have your company added here!
STC No.: SR09224RC	Status: Current	App Date: 03/14/1997	Rev Date: 02/08/2023
Description: Modification of the lift beam on the Model UH-1H
TC Nos.: H13WE, H15NM, H3SO, H6SO
Models: Garlick Helicopters Inc.UH-1B, UH-1H Hagglund Helicopters LLCUH-1H Richards Heavylift Helo Inc.UH-1B, UH-1H Southwest Florida Aviation InternationalUH-1B, UH-1H
ACO: AIR-760: Central Certification Branch CHI