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Which one of the following is an advantage of a

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Which one of the following is an advantage of a Microwave Landing System(MLS) compared with an Instrument Landing System (ILS)?A – It does not require a separate azimuth (localiser) and elevation (azimuth)transmitterB – It is insensitive to geographical site and can be installed at sites where it isnot possible to use an ILSC – The installation does not require to have a separate method (markerbeacons or DME) to determine rangeD – There is no restriction on the number of ground installations that can beoperated because there is an unlimited number of frequency channelsavailableRef: AIR: atpl, ir; HELI: atpl, irAns: B5.In which frequency band does the Microwave Landing System (MLS)operate?A – EHFB – SHFC – VHFD – UHFRef: AIR: atpl, ir; HELI: atpl, irAns: B6.The azimuth transmitter of a Microwave Landing System (MLS) provides afan-shaped horizontal approach zone which is usually:A - + or – 50oof the runway centre-lineB - + or – 40oof the runway centre-lineC - + or – 60oof the runway centre-lineD - + or – 30oof the runway centre-lineRef: AIR: atpl, ir; HELI: atpl, irAns: B
7.Which one of the following methods is used by a Microwave Landing System(MLS) to indicate distance from the runway threshold?A – Timing the interval between the reception of sequential secondary radarpulses from the MLS station to the aircraftB – Timing the interval between the transmission and reception of primaryradar pulses from the aircraft to MLS stationC – Measurement of the frequency shift between the MLS azimuth andelevation transmissionsD – A DME co-located with the MLS transmittersRef: AIR: atpl, ir; HELI: atpl, irAns: D8.The principle of operation of MLS is:A – time referenced scanning beamsB – phase comparison directional beamsC – lobe comparison of scanning beamsD – frequency comparison of reference beamsRef: AIR: atpl, ir; HELI: atpl, irAns: A9.Which one of the following correctly lists the major ground based componentsof a Microwave Landing System (MLS)?A – Combined azimuth and elevation transmitter, outer and inner markerbeaconsB – Separate azimuth and elevation transmitters, outer and middle markerbeaconsC – Combined azimuth and elevation transmitter, DME facilityD – Separate azimuth and elevation transmitters, DME facilityRef: AIR: atpl, ir; HELI: atpl, irAns: D
10.MLS installations notified for operation, unless otherwise stated, provideazimuth coverage of:A - + or – 20o about the nominal courseline out to a range of 10 NMB - + or – 20o about the nominal courseline out to a range of 20 NMC - + or – 40o about the nominal courseline out to a range of 30 NMD - + or – 40o about the nominal courseline out to a range of 20 NMRef: AIR: atpl, ir; HELI: atpl, irAns: D11.The MLS utilises a:A – clock referenced scanning beam systemB – phase referenced scanning beam systemC – time referenced scanning beam systemD – magnetic referenced scanning beam systemRef: AIR: atpl, ir; HELI: atpl, irAns: C12.In a MLS the time that elapses between the passage of the TO scan and theFROM scan at the aircraft position is:

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Term
Fall
Professor
NoProfessor
Tags
VHF omnidirectional range, NDBs

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