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

SA1527NM

Installation of Foxboro fuel management indication system. Held by Northrop Grumman Corporation California Microwave Systems, which holds 13 approved modifications in all. Last revised December 13, 2002. System: other and general.

What it applies to

Kind of product
Aircraft
Design holder
Bombardier-Rotax GmbH; Bombardier-Rotax GmbH
Models
DHC-7-100, DHC-7-102
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 8, 2026.