SA01944CH (2 OF 2)
Modify airplane to fly on unleaded automotive gasoline, 87 minimum antiknock index, per ASTM Specification D-439 or D-4818 of any volatility class, A through E, or 82UL AVGAS per ASTM D-6227. Held by Experimental Aircraft Association INC., which holds 3 approved modifications in all. Last revised March 4, 2004. System: other and general.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Arizona Aerospace Foundation; Arizona Aerospace Foundation; Augustair Inc.; Augustair Inc.; Augustair Inc.; Consolidated Vultee Aircraft Corporation Stinson Division; Consolidated Vultee Aircraft Corporation Stinson Division; Dynac Aerospace Corporation; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; Superior Aircraft Company; Superior Aircraft Company; Taylorcraft Aviation LLC; Taylorcraft Aviation LLC; Taylorcraft Aviation LLC; Taylorcraft Aviation LLC; Taylorcraft Aviation LLC; Taylorcraft Aviation LLC; Taylorcraft Aviation LLC; Taylorcraft Aviation LLC; Taylorcraft Aviation LLC; Taylorcraft Aviation LLC; Taylorcraft Aviation LLC; Taylorcraft Aviation LLC; Taylorcraft Aviation LLC; Taylorcraft Aviation LLC; Taylorcraft Aviation LLC; Taylorcraft Aviation LLC; Taylorcraft Inc.; Univair Aircraft Corporation; Univair Aircraft Corporation; Univair Aircraft Corporation; Univair Aircraft Corporation; Univair Aircraft Corporation; Univair Aircraft Corporation; Univair Aircraft Corporation; Univair Aircraft Corporation; Univair Aircraft Corporation; Univair Aircraft Corporation; Univair Aircraft Corporation; Univair Aircraft Corporation; Univair Aircraft Corporation; Univair Aircraft Corporation; Univair Aircraft Corporation; Gores William; Gores William; Gores William; Gores William; Gores William; Gores William; Gores William
- Models
- DC-65, DCO-65, 2150, 2150A, 2180, 10, HW-75, Aero Commander 100, PA-16, PA-18, PA-18-105 (Special), PA-18-125 (Army L-21A), PA-18-135, PA-18-150, PA-18A, PA-18A-135, PA-18A-150, PA-18AS-125, PA-18AS-135, PA-18AS-150, PA-18S, PA-18S-105 (Special), PA-18S-125, PA-18S-135, PA-18S-150, PA-19 (Army L-18C), PA-19S, PA-20, PA-20-115, PA-20-135, PA-20S, PA-20S-115, PA-20S-135, PA-22, PA-22-108, PA-22-135, PA-22-150, PA-22-160, PA-22S-135, PA-22S-150, PA-22S-160, PA-28-140, PA-28-150, PA-28-151, J3C-40, J3C-50, J3C-50S, J3C-65 (Army L-4; L-4A; L-4B (Navy NE-1); L-4H; L-4J (Navy NE-2)), J3C-65S,...
- Type certificates
- A-746, A-746, 4A19, 4A19, 4A19, A-709, A-709, 1A21, 1A1, 1A2, 1A2, 1A2, 1A2, 1A2, 1A2, 1A2, 1A2, 1A2, 1A2, 1A2, 1A2, 1A2, 1A2, 1A2, 1A2, 1A2, 1A2, 1A4, 1A4, 1A4, 1A4, 1A4, 1A4, 1A6, 1A6, 1A6, 1A6, 1A6, 1A6, 1A6, 1A6, 2A13, 2A13, 2A13, A-691, A-691, A-691, A-691, A-691, A-691, A-691, A-692, A-692, A-692, A-692, A-692, A-692, A-698, A-698, A-698, A-698, A-703, A-703, A-703, A-725, A-725, A-725, A-725, A-725, A-725, A-740, A-780, A-780, A-797, A-800, A-805, ATC 455, ATC 595, ATC 660, A-730, A-730, 1A9, 1A9, A-696, A-696, A-696, A-696, A-696, A-696, A-696, A-696, A-696, A-696, A-696, A-696, A-696, A-696, A-643, A-718, A-718, A-767, A-767, A-767, A-767, A-767, A-787, A-787, A-787, A-787, A-787, A-787, A-787, A-787, A-675, A-675, A-675, A-675, A-675, A-675, A-675
- On this site
- Aeronca S-65 6 registered
Piper J-2 48 registered
Piper J-3 Cub 3,806 registered
Piper J4 Cub Coupe 197 registered
Piper J5 Cub Cruiser 294 registered
Piper PA-11 Cub Special 443 registered
Piper PA-12 Super Cruiser 1,247 registered
Piper PA-14 100 registered
Piper PA-15 165 registered
Piper PA-16 Clipper 276 registered
Piper PA-17 Vagabond 96 registered
Piper PA-18 Super Cub 3,621 registered
Piper PA-19 15 registered
Piper PA-20 Pacer 323 registered
Piper PA-22 Tri-Pacer and Colt 2,940 registered
Piper PA-28 Cherokee, Warrior, Archer and Arrow 18,633 registered
Stinson 10 89 registered
Stinson 108 Voyager and Station Wagon 1,270 registered
Stinson HW75 23 registered
Taylorcraft BC-65 109 registered
Taylorcraft BC12 BC-12D 1,225 registered
Taylorcraft BCS12 17 registered
Taylorcraft DC-65 49 registered
Taylorcraft DCO-65 195 registered
Varga Aircraft Corp. 2180 14 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.