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

SA2372CE

Installation of Teledyne Continental IO-520-K engine and McCauley D3A34C401/90DFA-12 propeller. Held by Kevin Lewis Martinez. Last revised September 16, 2020. System: propeller.

What it applies to

Kind of product
Aircraft
Design holder
Sierra Hotel Aero Inc.
Models
Navion A (Army L-17B and L-17C)
Type certificate
A-782
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 20, 2026.