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

SA324NE

Installation of two reinforcing plates P/N TSA-101-1 on Bell P/N 222-062-216-101 exhaust ejector. Held by Tri-State Aviation. Last revised March 11, 1986. System: engine.

What it applies to

Kind of product
Aircraft
Design holder
Bell Helicopter Textron (Canada); Bell Helicopter Textron (Canada)
Models
222, 222B
Type certificates
H9SW, H9SW
On this site
Bell 222 21 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 20, 2026.