Page 36 GTX 327 Installation ManualRev J 190-00187-02A.2 ENVIRONMENTAL QUALIFICATION FORMNOMENCLATURE: GTX 327 Airborne ATC Transponder EquipmentTYPE/MODEL/PART NO.: 010-00188-( ), which includes 011-00490-( )TSO/JTSO COMPLIANCE: TSO - C74c Class 1A, JTSO - C74c Class 1AMANUFACTURER'S SPECIFICATION AND/OR OTHERAPPLICABLE SPECIFICATION: 004-00070-00 Minimum Performance SpecificationMANUFACTURER: Garmin InternationalADDRESS: 1200 E 151st St, Olathe, Kansas 66062Conditions RTCA DO-160DSectionDescription of Conducted TestsTemperature and Altitude 4.0 Equipment tested to Categories A1 & D1 except asnotedLow Temperature 4.5.1High Temperature 4.5.2. & 4.5.3In-Flight Loss of Cooling 4.5.4 Cooling air not required.Altitude 4.6.1Decompression 4.6.2Overpressure 4.6.3Temperature Variation 5.0 Equipment tested to Category CHumidity 6.0 Equipment tested to Category AShock 7.0 Equipment tested to Category BVibration 8.0 Equipment tested in each aircraft type to aircraft zone2. Aircraft Type 2 and 6 were tested to Category S2,Vibration level B2. Aircraft Type 3, 4 and 5 weretested to Category S, Vibration level M.Note: Vibration level M modified to increase levelto RTCA DO-160C Curve N for Helicopters asfollows-0.1 inches peak-to-peak double amplitudefrom 5 Hz to 17 Hz, 1.5 g-Pk from 17 Hz to 500 Hz.