The U.S. aircraft register, updated daily
Approved modifications · supplemental type certificate · current · amended

SH201WE

Installation of stirrup assemblies to directional control pedals for operation by handicapped pilot. (US ARMY OH-13E 205A). Held by Dallwig Barry C, which holds 4 approved modifications in all. Last revised March 15, 2001. System: other and general.

What it applies to

Kind of product
Aircraft
Design holder
Bell Helicopter Textron; Bell Helicopter Textron; Bell Helicopter Textron; Bell Helicopter Textron; Bell Helicopter Textron; Bell Helicopter Textron; Bell Helicopter Textron; Bell Helicopter Textron; Bell Helicopter Textron; Bell Helicopter Textron; Bell Helicopter Textron; Bell Helicopter Textron (Canada); Bell Helicopter Textron (Canada); Bell Helicopter Textron (Canada); Eurocopter Deutschland GmbH; Eurocopter Deutschland GmbH; Eurocopter Deutschland GmbH; Eurocopter Deutschland GmbH; Eurocopter Deutschland GmbH; Eurocopter Deutschland GmbH; Eurocopter Deutschland GmbH; Eurocopter Deutschland GmbH; Eurocopter Deutschland GmbH; Eurocopter Deutschland GmbH; Eurocopter France; Eurocopter France; Eurocopter France; Eurocopter France; Eurocopter France; Eurocopter France; Eurocopter France; Eurocopter France; Eurocopter France; Eurocopter France; Eurocopter France; Eurocopter France; Eurocopter France; MD Helicopter Inc.; MD Helicopter Inc.; MD Helicopter Inc.; MD Helicopter Inc.; MD Helicopter Inc.; MD Helicopter Inc.; MD Helicopter Inc.; MD Helicopter Inc.; MD Helicopter Inc.; MD Helicopter Inc.; Rogerson Hiller Corporation; Rogerson Hiller Corporation
Models
UH-1B, 204B, 205A-1, 205A, UH-1F, UH-1B, UH-1B, 412, 212, UH-1B, U.S. Army OH-13E, 430, 230, 222U, MBB-BK 117 A-4, MBB-BK 117 C-1, MBB-BK 117 B-1, MBB-BK 117 A-3, MBB-BK 117 A-1, MBB-BK 117 B-2, BO-105LS A-1, BO-105S, BO-105C, BO-105A, AS355F, AS355E, AS355F1, AS355F2, AS355N, AS-350D, AS-350B2, AS-350B1, AS-350B3, AS-350BA, AS-350D1, AS-350C, AS-350B, 369HE, 369FF, 500N, 369HS, 369HM, 369H, 369F, 369E, 369A (Army OH-6A), 369D, UH-12E-L, UH-12E
Type certificates
H1RM, H1SW, H1SW, H1SW, H2NM, H3NM, H3SO, H4SW, H4SW, H5SO, H7SW, H9SW, H9SW, H9SW, H13EU, H13EU, H13EU, H13EU, H13EU, H13EU, H3EU, H3EU, H3EU, H3EU, H11EU, H11EU, H11EU, H11EU, H11EU, H9EU, H9EU, H9EU, H9EU, H9EU, H9EU, H9EU, H9EU, H3WE, H3WE, H3WE, H3WE, H3WE, H3WE, H3WE, H3WE, H3WE, H3WE, 4H11, 4H11
On this site
Aerospatiale AS-355 23 registered
Airbus Helicopters AS350 AStar (Écureuil), now H125 891 registered
Airbus Helicopters AS355 TwinStar 6 registered
Airbus Helicopters MBB-BK 117 C-1 9 registered
Bell 204 7 registered
Bell 205 58 registered
Bell 212 59 registered
Bell 222 21 registered
Bell 230 13 registered
Bell 412 87 registered
Bell 430 30 registered
Bell UH-1 Huey (Iroquois) 404 registered
Hiller UH-12 217 registered
Hughes 369 500 series helicopters 122 registered
Md Helicopters Inc 369 108 registered
Md Helicopters Inc 500 15 registered
Md Helicopters Llc 369 34 registered
Messerschmitt-Boelkow-Blohm BO-105 11 registered
The FAA's record
On the FAA's site

What an approved modification is

A supplemental type certificate is the FAA's approval of a change to a certified design: a new engine or propeller, avionics, an autopilot, floats, a parachute, a larger fuel tank, an ice-protection kit. The company holding it may sell the kit and the paperwork to owners of the listed models; the modification then becomes part of that aircraft's record. The FAA's list says what was approved and for which models, not how many aircraft carry it.

Source: FAA supplemental type certificates (Dynamic Regulatory System). Register counts from the FAA register of October 7, 2026.