![]() With reverse sensing, the needle veers to the wrong side. Typically, we want the CDI to deflect to the side of the desired track. However, it is still a good idea to set the OBS to the inbound course of the published approach for better situational awareness. Unlike in VOR navigation, turning the OBS knob when a localizer is in-use does not affect the CDI displacement. Unlike VORs, which facilitate navigation on any bearing around them (from 0º to 359º), localizers only support a single, specific direction. In both, the pilot stays on the desired track by keeping the CDI (Course Deviation Indicator) centered. Navigation with localizers and VORs is very similar. VORs and localizers share the same navigation radio and display equipment in the flight deck. It can serve as part of an ILS approach or in a stand-alone localizer-only procedure. The primary component of the ILS is the localizer, which provides lateral course guidance. ILS relies on multiple ground-based and aircraft equipment that provides: It is still, by far, the most commonly used precision instrument approach procedure. The ILS is one of the oldest yet most widely used instrument approach procedures still in service. You may already know that Instrument approaches are IFR procedures designed to guide the aircraft from the en-route part of the flight to a position from which it can make a safe landing.Ī precision approach provides lateral (left and right) and vertical (up and down) course guidance on the final approach leg. A built-in RF power meter measures COM Transmitter power, from 0-10W or 0-100W, either peak or average power by selecting a switch position located on the Front Panel.An Instrument Landing System ( ILS) enables pilots to shoot precision instrument approaches to a runway.īefore digging into the nuts and bolts of ILS, let's review what an instrument approach, and more specifically, a precision-instrument approach is.Any time the Test Set is plugged to an ac line, the battery is being charged. NICAD battery and built -in charging system permit completely portable operation for up to 2 hours continuous duty. 90° bearing check monitor allows quick verification of basic VOR bearing from the VOR demod signal.(VOR), Localizer (LOC) or Glide Slope (G/S) Tones.A six-digit counter which indicates the RF of the signal generator on any band, the frequency of a COM Transmitter under test, any external signal input from 1 MHz to at least 300 MHz, or the VOR Bearing selected by the Bearing Select Switches.The signal generator can be operated under either fixed frequency control or in variable frequency mode in each band. Signal Generator with a variable attenuator which can be connected to the equipment under test by a radiated signal from a self-contained antenna or by a coaxial cable.The generator can be modulated internally by a 1020 Hz Ident Tone, Marker, VHF Omnidirectional Range. ![]() These features include: automatic sweep, automatic LOC DDM, two fixed, paird LOC and G/S frequencies and two fixed VOR frequencies. The NAV-402AP3 includes features to allow testing of refined autopilot systems. ![]() The test set is powered by an internal battery. The IFR/Aeroflex NAV-402AP3 is a Bench and Ramp test set crafted to meet the electronic functional test necessities of Categories I and II ILS Systems, Navigation (NAV), Communication (COMM) and Marker (MKR) Systems. Viavi / Aeroflex NAV-402AP3 Features and Specifications * ![]()
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