MLS Flashcards

1
Q

MLS

A

MICROWAVE LANDING SYSTEM

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2
Q

DISADVATNGES FOR ILS

A

ONLY 40 CHANNELS
LACALIZER AND GLIDEPATH REQUIRE LONG,STRAINGHT IN APPR
NO SPEICAL APP FOR SLOW OR LIGHT /c
Subject mulitpatch

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3
Q
A

3 ground based transmitter
Azimuth unit(AZ)
Back azimuth unit (BAZ)
Elevation unit(EL)
Paired DME/P

Operates in the SHF frewuncy band
Up to 200 channels on asssigned frequency
Identified using a 4 letter code ,starting with M( in morese code)

Airboneequipment

Muliti mode reciver (MMR) allows tuning of ILS ,MLS and gps approach
Indicaotr (same ILS)

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4
Q

Azimuth Coverage and range

A

40 degree either side
At 20 nm

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5
Q
A

A narow beam scans each sector TO and FROM
An a/c wihtin the beam is painted twice ,once in each sweep

The time interval between the two retuns gives an accurate

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6
Q
A

Horizon tal and vertical
Even in departure (using back approach)

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7
Q
A

Segment approach needs a flight director and FMS
Wihtout DME/P ,can be flown only straight

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8
Q

Adavantages

A

~built in dme
~back coarse

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