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

SA8018SW

Installation of Zeftronics alternator controller unit P/N R15100 (Product configuration file ZOCPCF) or P/N R15V00 )Product configuration file (ZODPCF). Held by Tovya Group, INC, which holds 12 approved modifications in all. Last revised May 12, 1998. System: electrical power.

What it applies to

Kind of product
Aircraft
Design holder
Textron Aviation Inc.
Models
150
Type certificate
3A19
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.