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 (4)  S 796-183Use Fig. 616, View F, to help to find the internal leak points.
 (5)  S 796-184The internal leak points are usually found at one of these locations: (a) At a fillet seal common to the upper or lower chord of the inboard rib of dry bay four. (b) At a fillet seal common to the upper or lower wing skin and the front spar upper or lower chord. (c) At a fillet seal common to the upper or lower wing skin and the forward or aft side of a stringer. (d) At a fillet seal common to the front spar web and the upper or lower chord of the front spar.

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 28-11-00
 ALL  ú ú 01 Page 657 ú Sep 28/99

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757 MAINTENANCE MANUAL
 FUEL TANKS - CLEANING/PAINTING
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 1. General
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 A. This procedure contains these tasks: ú (1) Detection Test for Microbial Contamination
 (2)
Clean the Fuel Tank (Fungus and Corrosion Removal)

 (3)
Apply the Corrosion Resistant Finish (Topcoat) ú ú TASK 28-11-00-287-065 ú2. Detection Test for Microbial Contamination

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 A. General ú (1) The corrosion caused by the growth of micro-organisms can be a ú serious problem. These micro-organisms, thriving at the interface ú of turbine fuel and any trapped water are fed with the hydrocarbons ú of fuel and mineral salts of water. They produce deposits with ú corrosive action, which have the appearance of slime and vary in ú color from grayish-white, when dry, to muddish-brown or black, when ú wet with water or fuel. ú (2) Fuel/water samples taken from each fuel tank should be tested with a ú microbial contamination kit. Positive results for microbial ú containation require action which can include a biocide treatment or ú physical removal of microbial growth from fuel tanks. ú (3) All instructions supplied with the detection kits should be followed ú closely. Variation in the fuel/water sample and the ability of the ú detection kits to consistently measure the level of microbial growth ú make it important to retest if a detection test shows microbial ú contamination. Do not compare the test results between the ú different types of detection kits. ú B. References ú (1) AMM 12-11-03/301, Fuel Sump Draining
 (2) AMM 28-11-00/201, Fuel Tank ú C. Equipment ú (1) Microbial Contamination Test Kits: ú Use one of these: ú (a) MicrobMonitor2
 ú Hemel Hempstead, UK ú Tel: +44 (0) 1442 225711 ú Fax: +44 (0) 1442 223960 ú Email: micromonitor2@bp.com
　
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本文鏈接地址：757 AMM 飛機維護手冊 燃油 CHAPTER 28 - FUEL 1(93)