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

SA2545NM

Installation of 1/2" Marine Plywood floort, Seat Rails, TSO Seats and Interior Arrangement for 13 passenger configuration. Held by Bushmaster Aircraft Corporation, which holds 2 approved modifications in all. Last revised January 18, 1985. System: cabin, seats and restraints.

What it applies to

Kind of product
Aircraft
Design holder
Bushmaster Aircraft Corporation
Models
Bushmaster 2000
Type certificate
A19WE
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.