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

ST00180DE

Installation of Long Range Fuel System for the Viking Air Limited Model DHC-7-102 and 103 airplane in accordance with Branson Aircraft Corporation (BAC) Drawing 47100, Rev. F, dated March 10, 2011, or later FAA approved revision. Held by Northrop Grumman Systems Corporation, which holds 62 approved modifications in all. Last revised April 13, 2011. System: fuel system.

What it applies to

Kind of product
Aircraft
Design holder
Viking Air Limited; Viking Air Limited
Models
DHC-7-102, DHC-7-103
Type certificates
A20EA, A20EA
On this site
Dehavilland DHC-7 7 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.