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

SA3221SO

Removal of existing aluminum battery and starter cables and replacement of these cables with copper cables. Held by Kosola & Associates INC, which holds 21 approved modifications in all. Last revised April 29, 1992. System: engine.

What it applies to

Kind of product
Aircraft
Design holder
The New Piper Aircraft Inc.
Models
PA-34-200T
Type certificate
A7SO
On this site
Piper PA-34 Seneca 996 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 19, 2026.