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

SA01902CH

Installation of two Walter a.s. Model M601E-11A engines and Avia propeller model V.510/90A/B five bladed propellers. Held by Nextant Aerospace, which holds 29 approved modifications in all. Last revised February 1, 2018. System: propeller.

What it applies to

Kind of product
Aircraft
Design holder
Textron Aviation Inc.; Textron Aviation Inc.; Textron Aviation Inc.
Models
C90, C90A, E90
Type certificates
3A20, 3A20, 3A20
On this site
Beechcraft C90 King Air C90 607 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.