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

SA01393WI-D

Modification of a Collins CTL-23 or CTL-23C VHF COMM/NAV Control Panel System installation. Held by Rockwell Collins INC, which holds 359 approved modifications in all. Last revised July 12, 2006. System: other and general.

What it applies to

Kind of product
Aircraft
Design holder
Harbin Aircraft Manufacturing Corporation; Piaggio Aero Industries S.p.A.; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company
Models
Y12 IV, P-180, 1900D, 300, 300LW, B300, B300C
Type certificates
A00006WI, A59EU, A24CE, A24CE, A24CE, A24CE, A24CE
On this site
Beechcraft 1900 Airliner 157 registered
Beechcraft 300 King Air 300 131 registered
Beechcraft B300 King Air 350 784 registered
Piaggio Aero Industries Spa P180 57 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 20, 2026.