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5) Remove nuts (1), washers (2) and lockwashers (14) if installed. Discard the nuts. Antenna installed with conductive sealant 6) Carefully unstick and remove antenna (4). 7) Using a plastic scraper, remove any sealant residues on inspection door (3) and antenna (4), if necessary. Antenna installed without conductive sealant 6) Remove antenna (4) and discard gasket (5) if installed. C. Installation of the transponder antenna Antenna on inspection door with counterplate 1) Clean the external face of inspection door (3) with a clean lintfree cloth moistened with cleaning agent (TB 11-912). 2) Secure antenna with new nuts (1), washers (2) and lockwashers (14) if installed. AAAA Validity : OPTION Page 201 34 53-03 (BA) JUN 04 3) Apply a bead (13) of sealant (TB 08-004B) around antenna connector. Antenna on inspection door without counterplate 1) If inspection door (3) area in contact with the base of antenna (4) is not a alodine-coated area, perform the following operations a) Position the antenna on inspection door (3) and draw the contour of the antenna with a soft-lead pencil. b) Using adhesive tape, delimit the area of inspection door (3) around the contour of antenna (4). c) Using abrasive cloth (TB 05-916C), bare the area in contact with the antenna base on inspection door (3). d) Clean the bared area with a clean lintfree cloth moistened with cleaning agent (TB 11-912). Wipe with a dry cloth. e) Protect the bared area with Alodine (TB 13-002). f) Remove the adhesive tape. 2) Clean the door area in contact with the antenna base with a clean lintfree cloth moistened with cleaning agent (TB 11-912). Wipe with a dry cloth. 3) Ensure the bonding of areas (9) in contact with washers (2) - refer to 20-00-12. 4) Secure the antenna with new nuts (1) and washers (2). 5) Clean the alodine-coated areas still visible with a clean lintfree cloth moistened with cleaning agent (TB 11-912). Wipe with a dry cloth. 6) Apply varnish (TB 07-906) on securing hardware and on alodine-coated areas still visible. Aircraft with nylon washers (7) 7) Prepare areas to be bonded (8), to a diameter of 0.5 in (13 mm), for all the points of inspection door (3) attachment (internal area) - refer to 20-00-12. 8) Ensure the bonding of the facing contact surfaces on structure (10) - refer to 20-00-12. 9) Connect connector (11). 10) Make sure all the tools and materials are removed and the work area is clean and free from debris. 11) Secure inspection door (3) with screws (6) and washers (7). Aircraft with metal washers (7) 7) On inspection door (3) clean up the existing bonding points under washers (7) - refer to 20-00-12. 8) Connect connector (11). 9) Make sure all the tools and materials are removed and the work area is clean and free from debris. 中国通航网 www.ga.cn 通航翻译 www.aviation.cn 本文链接地址：TB20 MAINTENANCE MANUAL 34 导航 TB20飞机维护手册 2(32) |
