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

SR04357NY

Installation of Modified Elevator Horn. Held by Mcdermott Aviation LTD. (Canada), which holds 4 approved modifications in all. Last revised June 19, 2019. System: flight controls.

What it applies to

Kind of product
Aircraft
Design holder
Bell Textron Inc.; Bell Textron Inc.
Models
214B, 214B-1
Type certificates
H6SW, H6SW
On this site
Bell 214 31 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 21, 2026.