§ 125.224 Collision avoidance system.

Effective January 1, 2005, any airplane you operate under this part 125 must be equipped and operated according to the following table:

Collision Avoidance Systems

If you operate any . . . Then you must operate that airplane with:
(a) Turbine-powered airplane of more than 33,000 pounds maximum certificated takeoff weight(1) An appropriate class of Mode S transponder that meets Technical Standard Order (TSO) C-112, or a later version, and one of the following approved units:
(i) TCAS II that meets TSO C-119b (version 7.0), or a later version.
(ii) TCAS II that meets TSO C-119a (version 6.04A Enhanced) that was installed in that airplane before May 1, 2003. If that TCAS II version 6.04A Enhanced no longer can be repaired to TSO C-119a standards, it must be replaced with a TCAS II that meets TSO C-119b (version 7.0), or a later version.
(iii) A collision avoidance system equivalent to TSO C-119b (version 7.0), or a later version, capable of coordinating with units that meet TSO C-119a (version 6.04A Enhanced), or a later version.
(b) Piston-powered airplane of more than 33,000 pounds maximum certificated takeoff weight(1) TCAS I that meets TSO C-118, or a later version, or
(2) A collision avoidance system equivalent to TSO C-118, or a later version, or
(1)(3) A collision avoidance system and Mode S transponder that meet paragraph (a)(1) of this section.
[Docket FAA-2001-10910, 68 FR 15903, Apr. 1, 2003]