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

SA1-95

Wing lift struts to include a hydraulic-pneumatic shock absorber. Held by Wings With Springs INC. Last revised January 1, 1961. System: heating, ice protection and utility systems.

What it applies to

Kind of product
Aircraft
Design holder
Booth Lee F. dba Taylorcraft Aerospace; Booth Lee F. dba Taylorcraft Aerospace; Booth Lee F. dba Taylorcraft Aerospace
Models
19, BC12-D, BC12D-85
Type certificates
1A9, A-696, A-696
On this site
Taylorcraft Aviation Corp 19 18 registered
Taylorcraft BC12 BC-12D 1,225 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 20, 2026.