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

SA1716WE

Installation of exhaust gas temperature (EGT) system. Held by Hanna-Aero Corporation. Last revised March 20, 1970. System: engine.

What it applies to

Kind of product
Aircraft
Design holder
Miscellaneous; Navion Aircraft Company Ltd.; Navion Aircraft Company Ltd.; Navion Aircraft Company Ltd.; Navion Aircraft Company Ltd.; Navion Aircraft Company Ltd.; Navion Aircraft Company Ltd.; Navion Aircraft Company Ltd.
Models
Miscellaneous, Navion H, Navion G, Navion F, Navion E, Navion D, Navion A (L-17C), Navion A (L-17B)
Type certificates
Miscellaneous, A-782, A-782, A-782, A-782, A-782, A-782, A-782
On this site
Navion NAVION D 5 registered
Navion NAVION F 6 registered
Navion NAVION G 61 registered
Navion NAVION H 36 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.