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

SA746EA

Installation of Norton radome kit numbers, P/N 3090X-1, 3090X-10, 3090X-15, 3090X-20 or 3090X-30. Held by Norton Company, Performance Plactics, which holds 62 approved modifications in all. Last revised November 9, 1981. System: other and general.

What it applies to

Kind of product
Aircraft
Design holder
Sabreliner Corporation; Sabreliner Corporation; Sabreliner Corporation; Sabreliner Corporation; Sabreliner Corporation
Models
NA-265-65, NA-265-60, NA-265-40, NA-265-80, NA-265-70
Type certificates
A2WE, A2WE, A2WE, A2WE, A2WE
On this site
North American NA-265 10 registered
Rockwell International Corp NA-265 33 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.