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Validity : S / N 1 - 9999 05-20 02 (JA) Page juN20101 "2A" INSPECTION - 50 HOURS
Registration number Model and Serial number Aircraft operating hours
ATA "2A" INSPECTION - 50 HOURS PRELIMINARY STEPS AREA OTHER INSPECTION PERFORMED BY PRELIMINARY STEPS 000 1) Record anomalies into log book or equivalent document for corrective action. 000 2) Check aircraft compliance with airworthiness directives, service bulletins and service letters - refer to 05-00-02 1. 000 3) Check expiry dates of life-limited parts : 000 - airframe - refer to 04-00-00 1 and 05-50-05 601, - equipment and hoses - refer to 05-10-00 1. 4) Perform a test run-up. Record parameters (at engine start) - refer to 05-30-02 201. 000 21-50 5) During the time the vapor cycle cooling system (if installed) is not used, run the compressor for 10 minutes, with engine at idle speed. 000 1 month 71-10 6) Remove upper engine cowling 121 and lower engine cowling 131. Visually inspect for cracks, wear, evidence of leaks (oil, fuel, air, exhaust gas) and security - refer to 71-10-01 201. 100 12-10 7) Drain the oil system - refer to 1 2-1 2-02 301, replace the filter - refer to 79-20-02 201, clean the strainer of crankcase - refer to 79-10-02 201. 100 First engine 10 hrs and 25 hrs or NOTE : Before discarding the filter and cleaning the strainer, check that there are no metal particles in the folds. 50 hrs or 4 months then every 4 months Close the drain cock and service the oil tank - refer to 12-12-01 301 and to the latest issue of LYCOMING SB 480. 72-30 8) Check for oil leaks around the rocker-box covers. If necessary replace the seal and torque screws - refer to 20-00-01 201. 100 72-30 9) Check that there is no evidence of overheat on the cylinders, indicated by burnt paint. In this case a fault exists inside the cylinder, and this must be repaired before returning the aircraft to service. 100
AIAA Validity : S / N 1 - 9999 05 20 03 ,,,,, Page 201 JUN 01
ATA "2A" INSPECTION - 50 HOURS PRELIMINARY STEPS AREA OTHER INSPECTION PERFORMED BY 72-30 10) Marked discoloration and seepage around the cylinder heads and cylinder barrel joints are usually due to the seepage of threading grease used at the factory for assembly of the cylinder or to slight gazeous leaks which will disappear once the cylinder has been operated for some time. 100 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：TB 20 MAINTENANCE MANUAL 05 TIME LIMITS MAINTENANCE CHECKS TB20飞机维护手册 05 时间限制维护检查 2
