Aircraft STC directory
Interstate Engineering & Type Design S-1B1 (Army L-6; XL-6) STCs
The Jun 30, 2026 FAA DRS snapshot contains 3 selected supplemental type certificates with status Current whose public applicability data names the Interstate Engineering & Type Design S-1B1 (Army L-6; XL-6). Use it to identify modification scope and recorded holders—not to determine serial-number effectivity, compatibility, installation approval, or commercial availability.
3
listed Current at snapshot
2
holder directories
2
modification categories
Oct 31, 2008
latest recorded revision
Modification demand surface
Recently revised S-1B1 (Army L-6; XL-6) STCs
Showing the 3 most recently revised records. Each entry links to the FAA source and separates public approval data from private commercial claims.
ONE ONLY STC, S/N 195 AND S/N 231: Installation of Lycoming O-320-A2B engine, McCauley 1A175/GM82 propeller, Cleveland 20-6, 6.00 - 6 main wheel and brake assemblies with 8.50 - 6, 6-ply tires, leaf tail spring with Scott Model 3200 tail wheel assembly, squared wing tips, and miscellaneous other design changes to airplanes S/N 195 and S/N 231.
FAA holder: STOL Aviation LLC c/o Tom Csatari