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

ST00640DE

Installation of Tropospheric Airborne Meteorolocigal Data Reporting System (TAMDAR). Held by Flyht INC., which holds 5 approved modifications in all. Last revised January 1, 2025. System: other and general.

What it applies to

Kind of product
Aircraft
Design holder
Bombardier Inc.; Bombardier Inc.; Bombardier Inc.; Embraer - Empresa Brasileira de Aeronautica S.A.; Embraer - Empresa Brasileira de Aeronautica S.A.; Embraer - Empresa Brasileira de Aeronautica S.A.; Embraer - Empresa Brasileira de Aeronautica S.A.; Embraer - Empresa Brasileira de Aeronautica S.A.; Embraer - Empresa Brasileira de Aeronautica S.A.; Embraer - Empresa Brasileira de Aeronautica S.A.; Embraer - Empresa Brasileira de Aeronautica S.A.; Embraer - Empresa Brasileira de Aeronautica S.A.; Embraer - Empresa Brasileira de Aeronautica S.A.; Embraer - Empresa Brasileira de Aeronautica S.A.; Embraer - Empresa Brasileira de Aeronautica S.A.; Embraer S.A.; Embraer S.A.; Embraer S.A.; Embraer S.A.; Embraer S.A.; Embraer S.A.
Models
DHC-8-100 Series, DHC-8-300 Series, DHC-8-400 Series, EMB-135BJ, EMB-135ER, EMB-135KE, EMB-135KL, EMB-135LR, EMB-145, EMB-145EP, EMB-145ER, EMB-145LR, EMB-145MP, EMB-145MR, EMB-145XR, ERJ 190-100 IGW, ERJ 190-100 LR, ERJ 190-100 STD, ERJ 190-200 IGW, ERJ 190-200 LR, ERJ 190-200 STD
Type certificates
A13NM, A13NM, A13NM, T00011AT, T00011AT, T00011AT, T00011AT, T00011AT, T00011AT, T00011AT, T00011AT, T00011AT, T00011AT, T00011AT, T00011AT, A57NM, A57NM, A57NM, A57NM, A57NM, A57NM
On this site
Bombardier DHC-8 Dash 8 and Q400 58 registered
Embraer EMB-135 ERJ 135 and Legacy 118 registered
Embraer EMB-145 ERJ 145 313 registered
Embraer ERJ 190 E190 and E195 49 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 22, 2026.