Variations on the localizer exist - IF 339-340 DME, radar, and LOM beacons can also be included in or required for ILS approaches.some marker beacon sites are colocated with compass locators, which are much higher powered and are terminal area NDBs.) is used to indicate a backcourse localizer FAF, where the descent is to be commenced.designates a specific decision height for that approach., white) is used on higher-precision (Cat II or greater) approaches and is between the MM and threshold, usually indicating an altitude of 100 feet or less.6 nm from the threshold, 200 feet HAT, and indicates the DH and/or missed approach point outer marker (OM, ––, blue) is 4 to 7 nm from the threshold, and roughly 1400 feet HAT.use 'low' setting if available to detect marker beacons.crosses the threshold at approximately 50 feetĮssentially an extremely low power ADF designed to create an elliptical 'fan' (alternate name: fan marker) that is 2400 feet wide and 4200 feet long at 1000 feet above the antenna.intercepts marker beacons at 1400 feet HAT (OM) and 200 feet (MM).reverse sensing makes it somewhat apparent.this is the danger of intercepting from above.average angle of 3°, but may be as low as 2.5° or as high as 4°Ĭalibrated out to 10 nm from threshold, but reception is common furtherįalse glideslope forms at approximately 12° above the horizontal.broadcast from antennas located approximately 1,000 ft from the approach end.Glideslope provides vertical guidance with a UHF signal lateral area is ☑0° to 18nm, ☓5° to 10 nm, providing proper off-course indications within the volume.service volume reaches 18 nm, between 1000 agl and 4500 above the antenna.the 'full scale' of 5° will extend to 700 ft wide at the threshold, varying the localizer width.40 channels, on odd tenths between 108.10 and 111.95.broadcast from the non-arrival end of the runway (illustration from IFH 7-28).Localizer provides lateral (directional) guidance Uses a system of 'lobes' overlapping points define the approachįive parts make up the ILS in actual use: As a precision approach, it is designed to transition from instrument to visual flight.The ILS is a precision approach, providing both lateral and vertical guidance down a predetermined flight path. Instrument Landing System, IF 309 & IFH 7-27 performance instrument, used as a reference to adjust control inputs.the glideslope needle will be flown just like a normal lateral course - the center is the airplane.
Ils vs localizer simulator#
Guide the instructor through the intercepting and tracking of several simulator scenarios.Maintain active involvement by responding to questions and taking notes.Arrive with completed homework assignment.Conclude with an oral quiz, identifying and correcting errors.Have the student solve multiple scenarios.Review each system before moving on to the nextĮvaluate student knowledge with questions emphasizing understanding rather than rote.Illustrate techniques using Tim's simulator.Describe new navigation systems and their operation in a predominantly lecture format.Introduce and motivate with the question of how we gauge distance and arrive at the airport without visual references.Tim's Navigation Simulator works with multiple technologies.Laptop with flight simulator and internet access Instrument Flying Handbook and The Pilot's Manual: Instrument Flying.The student should gain an understanding of DME operation and the instrument landing system, and be able to apply that knowledge to flight scenarios.
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