TSO-C112 - ADS-B for General Aviation

2/5/86 TSO-C112NOTE: The Federal Aviation Administration (FAA) strongly recommends early discussion andagreement between the applicant and the FAA on the applicant’s proposed software verificationand validation plan, and the applicant’s proposed software level or levels.(4) Environmental Standard. Change 2 to RTCA/DO-181 incorporates as areference RTCA document no. DO-160B, “Environmental Conditions and Test Procedures forAirborne Equipment,” dated July 1984.b. Marking. In addition to the marking specified in the Federal Aviation Regulations(FAR) Section 21.607(d), the following information shall be legibly and permanently marked onthe major equipment components:(1) Each separate component of equipment that is manufactured under this TSO(antenna, receiver, transmitter, etc.) must be permanently and legibly marked with at least thename of the manufacturer and the TSO number.(2) With regard to FAR 21.607(d)(2), the part number is to include hardware andsoftware identification or a separate part number may be utilized for hardware and software.Either approach must include a means for showing modification status.(3) The equipment shall be identified by a designator. The marking shall use thegeneral form as follows:CL 1x1 x2x3x4 x5x6x7Where “x i ” stands for an alphanumeric character describing the capability and the optionsincorporated in the transponder. The marking will be described here as three blocks of threecharacters each:First Block: CL 1 stands for the class of equipment and identifies this marking as theclassification label, coded1A = Class 1A, 1B = Class 1B, 2A = Class 2A,2B = Class 2B, 3A = Class 3A, 3B = Class 3B,04 = Class 4x 1 shall reflect the appropriate CA capability code that the transponder reports in itsAll-Call reply (reference RTCA/DO-181, paragraph 2.2.14.4.5)Second Block: x 2 : describes the RF power level of the reply transmitter, coded0 = low level, 1 = high levelx 3 : Aircraft Identification, codedPage 3