MLS

Question 1

MLS

Answer 1

MICROWAVE LANDING SYSTEM

Question 2

DISADVATNGES FOR ILS

Answer 2

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

Answer 3

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)

Question 4

Azimuth Coverage and range

Answer 4

40 degree either side
At 20 nm

Answer 5

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

Answer 6

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

Answer 7

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

Question 8

Adavantages

Answer 8

~built in dme
~back coarse