Section 121.355 14 CFR Ch. I (1-1-19 Edition) Section 121.355 Equipment for operations on which specialized means of navigation are used. (a) No certificate holder may conduct an operation - (1) Using Doppler Radar or an Inertial Navigation System outside the 48 contiguous States and the District of Columbia, unless such systems have been approved in accordance with appendix G to this part; or (2) Using Doppler Radar or an Inertial Navigation System within the 48 contiguous States and the District of Columbia, or any other specialized means of navigation, unless it shows that an adequate airborne system is provided for the specialized navigation authorized for the particular operation. (b) Notwithstanding paragraph (a) of this section, Doppler Radar and Inertial Navigation Systems, and the training programs, maintenance programs, relevant operations manual material, and minimum equipment lists prepared in accordance therewith, approved before April 29, 1972, are not required to be approved in accordance with that paragraph. [Doc. No. 10204, 37 FR 6464, Mar. 30, 1972] Section 121.356 Collision avoidance system. Effective January 1, 2005, any airplane you operate under this part 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 takeoff weight 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. COLLISION AVOIDANCE SYSTEMS - Continued If you operate any - Then you must operate that airplane with - (b) Passenger or combination cargo/passenger (combi) airplane that has a passenger seat configuration of 10- 30 seats. (c) 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 has a TSO C-118, or a later version, or (3) A collision avoidance system and Mode S transponder that meet paragraph (a)(1) of this section. (1) TCAS I that meets TSO C-118, or a later version, or (2) A collision avoidance system equivalent to maximum TSO C-118, or a later version, or (3) A collision avoidance system and Mode S transponder that meet paragraph (a)(1) of this section. [Doc. No. FAA-2001-10910, 68 FR 15902, Apr. 1, 2003] Section 121.357 Airborne weather radar equipment requirements. (a) No person may operate any transport category airplane (except C-46 type airplanes) or a nontransport category airplane certificated after December 31, 1964, unless approved airborne weather radar equipment has been installed in the airplane. (b) [Reserved] (c) Each person operating an airplane required to have approved airborne weather radar equipment installed shall, when using it under this part, operate it in accordance with the following: (1) Dispatch. No person may dispatch an airplane (or begin the flight of an airplane in the case of a certificate holder, that does not use a dispatch system) under IFR or night VFR conditions when current weather reports indicate that thunderstorms, or other potentially hazardous weather conditions that can be detected with airborne weather radar, may reasonably be expected along the route to be flown, unless the airborne weather radar equipment is in satisfactory operating condition. (2) If the airborne weather radar becomes inoperative en route, the airplane must be operated in accordance with the approved instructions and procedures specified in the operations manual for such an event. (d) This section does not apply to airplanes used solely within the State of Hawaii or within the State of Alaska 140 VerDate Sep<11>2014 08:20 May 17, 2019 Jkt 247048 PO 00000 Frm 00150 Fmt 8010 Sfmt 8010 Y:\SGML\247048.XXX 247048