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

SA01537SE

Increase wing tank fuel capacity of the above model aircraft in accordance with Cascade Aircraft Conversions LLC drawing S2R-100 Revision A, dated April 20, 2005, or later FAA revision to this drawing. Held by Cascade Aircraft Conversions LLC, which holds 4 approved modifications in all. Last revised April 27, 2005. System: airframe structure.

What it applies to

Kind of product
Aircraft
Design holder
Thrush Aircraft Inc.; Thrush Aircraft Inc.; Thrush Aircraft Inc.
Models
600 S-2D, S-2R, S2R-T34
Type certificates
A4SW, A4SW, A4SW
On this site
Thrush Aircraft Inc S-2 102 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 9, 2026.