SA02157CH-D
Installation of a Collins TCAS 4000 Traffic Alert and Collision Avoidance System in accordance with Garrett Aviation Services Drawing List 1006904, Revision C, dated May 19, 2005 or later FAA approved revision. Held by Garrett Aviation Services, which holds 185 approved modifications in all. Last revised May 19, 2005. System: instruments and avionics.
What it applies to
- Kind of product
- Aircraft
- Design holder
- The Cessna Aircraft Company; The Cessna Aircraft Company
- Models
- 501, 551
- Type certificates
- A27CE, A27CE
- On this site
- Cessna 501 Citation I/SP 189 registered
Cessna 551 34 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 8, 2026.