ST71CH-D
Installation of a Collins TCAS-94 Traffic Alert and Collision Avoidance System with Collins TDR-94D Mode S Transponders. Held by Garrett Aviation Services, which holds 185 approved modifications in all. Last revised November 7, 1997. System: instruments and avionics.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Raytheon Aircraft Company; Raytheon Aircraft Company
- Models
- HS.125 Series 700A, BAe.125 Series 800A (C-29A; U-125)
- Type certificates
- A3EU, A3EU
- On this site
- Hawker Siddeley HS.125 SERIES 700A 7 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.