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

ST03867NY

Installation of Dunlop P/N DR 26222T Bias Main Landing Gear Tyre(s). Held by Dunlop Aircraft Tyres Limited (United Kingdom), which holds 6 approved modifications in all. Last revised February 15, 2017. System: landing gear.

What it applies to

Kind of product
Aircraft
Design holder
Bombardier Inc.; Bombardier Inc.; Bombardier Inc.
Models
DHC-8-301, DHC-8-311, DHC-8-315
Type certificates
A13NM, A13NM, A13NM
On this site
Boeing Of Canada/Dehav Div DHC-8 6 registered
Bombardier DHC-8 Dash 8 and Q400 58 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.