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

SA00153AT

Installation of chemical evacuation system to remove residue from the agricultural spray dispersal system. (PZL M18 restricted category). Held by Paul S Woods, which holds 15 approved modifications in all. Last revised March 12, 1993. System: emergency equipment.

What it applies to

Kind of product
Aircraft
Design holder
Wytwornia Sprzetu Komunikacyjnego
Models
PZL M18
Type certificate
A47EU
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 8, 2026.