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

SA4-1438

Eronite covering of fuselage. Held by Lott William C, which holds 24 approved modifications in all. Last revised January 1, 1970. System: airframe structure.

What it applies to

Kind of product
Aircraft
Design holder
Booth Lee F. dba Taylorcraft Aerospace; Taylorcraft Inc.; Taylorcraft Inc.; Taylorcraft Inc.; Taylorcraft Inc.; Taylorcraft Inc.; Taylorcraft Inc.; Taylorcraft Inc.
Models
BC Series, BF (Army L-2G), BF-60, BF-65, BF12-65 (Army L-2K), BL, BL-65 (Army L-2F), BL12-65 (Army L-2J)
Type certificates
A-696, A-699, A-699, A-699, A-699, A-700, A-700, A-700
On this site
Taylorcraft BF-65 9 registered
Taylorcraft BF12 14 registered
Taylorcraft BL 13 registered
Taylorcraft BL-65 134 registered
Taylorcraft BL12 16 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.