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

SA1582NM

Installation of replacement long-life lift strut. Held by Delbert Dean Huss JR., which holds 25 approved modifications in all. Last revised January 29, 1999. System: landing gear.

What it applies to

Kind of product
Aircraft
Design holder
FS 2001 Corp.; FS 2001 Corp.; FS 2001 Corp.; FS 2001 Corp.
Models
J5A-80, J5A (Army L-4F), J5B (Army L-4G), J5C
Type certificates
A-725, A-725, A-725, A-725
On this site
Piper J5 Cub Cruiser 294 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 5, 2026.