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

SA04526NY

Installation of MT-Propeller Entwicklung GmbH model MTV-27-1-( )-C-F-R(P)-J/CFR300-82( ) 5-blade, full feathering,\nconstant speed, counterweighted, reversing propellers and spinners. Held by Mt- Propeller Entwicklung GMBH (Germany), which holds 66 approved modifications in all. Last revised June 5, 2023. System: propeller.

What it applies to

Kind of product
Aircraft
Design holder
Air Tractor Inc.; Air Tractor Inc.
Models
AT-802, AT-802A
Type certificates
A19SW, A19SW
On this site
Air Tractor Inc AT-802 685 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.