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

SA8705SW

Installation of R25V0N Alternator Control Unit or R2510N Alternator Control Unit or V2510A Over Voltage Sensor. Held by Tovya Group, INC, which holds 12 approved modifications in all. Last revised June 21, 1996. System: electrical power.

What it applies to

Kind of product
Aircraft
Design holder
Aerostar Aircraft Corporation; Aerostar Aircraft Corporation; Aerostar Aircraft Corporation; Aerostar Aircraft Corporation; Aerostar Aircraft Corporation; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Schweizer Aircraft Corporation; Twin Commander Aircraft Corporation
Models
PA-60-601P (Aerostar 601P), PA-60-601 (Aerostar 601), PA-60-602P (Aerostar 602P), PA-60-700P (Aerostar 700P), PA-60-600 (Aerostar 600), 310, 310Q, 310P, 320, 401A, 401B, 402A, 402B, 414, 421, 421A, 421B, PA-36-375 (Restricted Cat.), PA-36-285 (Restricted Cat.), PA-36-300 (Restricted Cat.), PA-31-300, PA-31, PA-31-325, PA-31-310, PA-31-350, PA-36-285 (Normal Cat.), PA-36-300 (Normal Cat.), PA-36-375 (Normal Cat.), F33A, F33C, A36, A36TC, 58, E55, 269C, 500-S
Type certificates
A17WE, A17WE, A17WE, A17WE, A17WE, 3A10, 3A10, 3A10, 3A25, A7CE, A7CE, A7CE, A7CE, A7CE, A7CE, A7CE, A7CE, A10SO, A10SO, A10SO, A20SO, A20SO, A20SO, A20SO, A20SO, A9SO, A9SO, A9SO, 3A15, 3A15, 3A15, 3A15, 3A16, 3A16, 4H12, 6A1
On this site
Beechcraft 58 Baron 1,295 registered
Beechcraft A36 Bonanza 2,530 registered
Cessna 310 1,410 registered
Cessna 320 137 registered
Cessna 401 51 registered
Cessna 402 174 registered
Cessna 414 Chancellor 605 registered
Cessna 421 Golden Eagle 769 registered
Cessna 500 Citation I 63 registered
Piper PA-31 Navajo and Chieftain 935 registered
Piper PA-36 Pawnee Brave 99 registered
Piper PA-60 Aerostar 57 registered
Schweizer 269 300 series helicopters 212 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 8, 2026.