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

SA1-643

Radar antenna mounts: 296-01 for 12-inch Collins WP-103 antenna; 296-03 12-inch RCA AVQ-55 antenna and 296-02for 12-inch RCA AVQ-50 antenna. Held by Chamberlain Aviation INC, which holds 33 approved modifications in all. Last revised June 5, 1970. System: other and general.

What it applies to

Kind of product
Aircraft
Design holder
Raytheon Aircraft Company
Models
65 Series
Type certificate
3A20
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 5, 2026.