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

SA00081AT

Installation of TSO Cleveland 600 x 6 wheel and brake assembly and the 800 x 6 tires. Held by Melex USA, INC, which holds 2 approved modifications in all. Last revised January 27, 1993. System: landing gear.

What it applies to

Kind of product
Aircraft
Design holder
Wytwornia Sprzetu Komunikacyjnego
Models
PZL-104 Wilga 80
Type certificate
A55EU
On this site
Wsk-Pzl Warzawa-Okecie PZL-104 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 20, 2026.