Automatic Dependent Surveillance-Broadcast (ADS-B) is a system broadcasting, without the need for action from the pilot or any request from ATC, that provides an enhanced set of aircraft surveillance data to Air Traffic Management (and potentially to other airplanes)

Dual transponder system ADS-B upgrade in Part 25 aircraft

TCAS II is a system used for detecting and tracking aircraft in the vicinity of your own aircraft. By interrogating their transponders it analyzes the replies to determine range, bearing, and if reporting altitude, the relative altitude of the intruder.

Modification of a Rockwell Collins, Inc. AHC-85( ) (AHRS) installation

Modication of a Rockwell Collins Weather Radar System installation.

Modification of a Collins TVI-920/TVI-920D Vertical Speed/TCAS Indicator installation

Modification of a Collins ALT-50A or ALT-55B Radio Altimeter system installation to a Collins ALT-1000 or ALT-4000 Radio Altimeter system installation in accordance with Collins Drawing Index as listed on AML No. ST01305WI-D, Revision -, or later FAA approved revision.

Modification of an existing FAA approved Collins TPR-720, TPR-900 or TPR-901 Mode S transponder installation in Part 25 Aircraft using Collins Drawing Index as listed on AML No. ST01202WI-D, latest FAA approved revision.

Modification of a single or dual Collins TDR-94 or TDR-94D Mode S Transponder System installation with CTL-92 control head to a Flight ID capable Collins TDR-94 or TDR-94D Mode S Transponder System installation with CTL-92E control head.

Modification of a Rockwell Collins, Inc. TCAS II system installation to Change 7.0 or Change 7.1