Murmer Aircraft Services, located at Houston Southwest Airport, specializes in aircraft exterior painting and interior refurbishments. We are a one stop shop for upgrading your aircraft inside and out, including window and deicer boot installations and interior instrumentation. Jets Turboprops Piston Engine Helicopters. Skip to content. Overlays Share Tweet. King Air Executive Interior ». Ice Shield Replacement Guide. Bookmark the permalink.
Some troubles must be corrected by repair or replacement of system components or by tightening loose connections.
Several troubles common to pneumatic deicing systems are shown in the left-hand column of the chart in Figure 3. Note the probable causes and the remedy of each trouble listed in the chart. In addition to using troubleshooting charts, operational checks are sometimes necessary to determine the possible cause of trouble.
Figure 3. Troubleshooting guide for wing deice system. During each preflight and scheduled inspection, check the deicer boots for cuts, tears, deterioration, punctures, and security; during periodic inspections, go a little further and check deicer components and lines for cracks.
If weather cracking of rubber is noted, apply a coating of conductive cement. The cement, in addition to sealing the boots against weather, dissipates static electricity so that it does not puncture the boots by arcing to the metal surfaces. The life of the deicers can be greatly extended by storing them when they are not needed and by observing these rules when they are in service:.
Do not drag gasoline hoses over the deicers. Keep deicers free of gasoline, oil, grease, dirt, and other deteriorating substances. Do not lay tools on or lean maintenance equipment against the deicers. Promptly repair or resurface the deicers when abrasion or deterioration is noted. Wrap deice boots in paper or canvas when storing. Thus far, preventive maintenance has been discussed. The actual work on the deicers consists of cleaning, resurfacing, and repairing.
Cleaning should ordinarily be done at the same time the aircraft is washed, using a mild soap and water solution. Grease and oil can be removed with a cleaning agent, such as naptha, followed by soap and water scrubbing.
Whenever the degree of wear is such that it indicates that the electrical conductivity of the deicer surface has been destroyed, it may be necessary to resurface the deicer.
The resurfacing substance is a black, conductive neoprene cement. Prior to applying the resurfacing material, the deicer must be cleaned thoroughly and the surface roughened. Cold patch repairs can be made on a damaged deicer. The deicer must be relieved of its installed tension before applying the patch.
The area to be patched must be clean and buffed to roughen the surface slightly. Patches are glued in place. A few modern aircraft are equipped with electric deice boots on wing sections or on the horizontal stabilizer.
These boots contain electric heating elements which are bonded to the leading edges similarly to pneumatic deice boots. When activated, the boots heat up and melt the ice off of leading edge surfaces. The elements are controlled by a sequence timer in a deice controller. Ice detector and ram air temperature probe inputs initiate operation when other flight condition parameters exist. The system is inoperative while the aircraft is on the ground.
Figure 4 illustrated such a system. A benefit of electric deice boots is the conservation of engine bleed air. Current draw is limited to only those periods when de-ice is required. Figure 4. Electric stabilizer deice system. Tags Ice and Rain Protection. Previous Post Next Post. Contact Form. LinkList ul li ul'. Tabify by Templateify v1.
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