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

SR03979AT

Deactivation of the Fly By Wire Elevator in a Bell 2 l 4ST Rotorcraft and associated hardware. Held by Erickson Incorporated, which holds 14 approved modifications in all. Last revised July 23, 2019. System: flight controls.

What it applies to

Kind of product
Aircraft
Design holder
Bell Helicopter Textron Inc.
Models
214ST
Type certificate
H10SW
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 7, 2026.