A number of KHF-950 HF components have been squawked as being stuck in transmit mode, or the frequency is changing on the controller every time a transmit is attempted. However, there were no faults found with the suspected units.
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When replacing an ART-2000 or ART-2100 radar receiver transmitter with a loaner or replacement unit, make sure to check that the antenna switch settings are set to the proper flat plate.
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The normal engine startup sequence removes power from the avionics system, causing it to drop offline. SB560XL-24-14R2 prevents this occurrence.
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When a radar unit is in for repair, having it tested in an environmental/altitude chamber assists in duplicating ‘no fault founds’ and finding intermittent squawks.
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Honeywell stopped production of the RM-850 Radio Management Units (RMUs) in 2006. Then on November 8, 2010, Honeywell announced there may not be enough suitable replacement parts for these RMUs to be repaired.
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FANS 1/A – CPDLC is one of the many components of NextGen and will play an integral part in many aspects of future systems.
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Antenna corrosion is usually not found until an equipment failure is noticed. By that time, it might be too late.
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The answer depends on what you’re testing. Most people prefer to use a digital multimeter if given the choice. In most cases, Accessory Tech Rep. Jerry Cable would agree.
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In recent weeks, Avionics Tech Rep. Larry Troyer has received several calls from King Air operators reporting Honeywell air data and altimeter erratic operation problems.
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When the on-board microwave is in use, several operators have reported to Duncan Aviation avionics techs an intermittent interruption in Wi-Fi service while using laptops or personal electronic devices (PED), such as BlackBerrys or iPhones.
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