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

SA02024NY

Installation of constant speed hydraulically controlled variable pitch 4-blade MTV-14-B-C-F/CF (1) 188-30d propellers. Held by Mt- Propeller Entwicklung GMBH (Germany), which holds 66 approved modifications in all. Last revised November 12, 2004. System: propeller.

What it applies to

Kind of product
Aircraft
Design holder
Aerostar Aircraft Corporation
Models
PA-60-700P (Aerostar 700P)
Type certificate
A17WE
On this site
Piper PA-60 Aerostar 57 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.