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

SR00939NY

Installation of Vertical Reference Door with left seat operation provisions. Held by Dart Aerospace LTD. (Canada), which holds 16 approved modifications in all. Last revised March 28, 2019. System: cabin, seats and restraints.

What it applies to

Kind of product
Aircraft
Design holder
Bell Helicopter Textron; Bell Helicopter Textron
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 20, 2026.