IFR Navaids - The ILS

ILS glidepath coverage extends to a range of 10 nm and

• 8° either side of the centre line

• 10° either side of the centre line

• 15° either side of the centre line

• 35° either side of the centre line

An aircraft is following the ILS glidepath of 3° at an airfield 4.2 nm from the ILS touchdown point. The approach speed is 130kt. The elevation of the airfield is zero. What should the aircraft's check height be?

• 910ft

• 960ft

• 1260ft

• 1390ft

For reliable navigational information the approximate coverage of a 3° glideslope is:

• 1.35° to 5.25° from the horizontal and 8° either side of the localiser

• 0.45° from the horizontal to 1.75° above the glidepath and 8° either side of the localiser

• 0.7° above and below the glidepath and 8° either side of the localiser

• 3° above and below the glidepath and 10° either side of the localiser

The ILS localiser uses frequencies in the _______ band and the glideslope uses frequencies in the ______ band:

• UHF VHF

• VHF UHF

• VHF HF

• UHF SHF

ILS localisers which are associated with normal angle glidepath transmitters in NZ provide coverage out to a range of ______ within ______ of the centre line:

• 10NM 35Degrees

• 25NM 25Degrees

• 25NM 10Degrees

• 35NM 8Degrees

The rate of descent in feet per minute, appropriate to a 3° ILS glidepath at an approach groundspeed of 110 kts is

• 553 fpm

• 586 fpm

• 620 fpm

• 658 fpm

In an ILS installation the accurate coverage of the glidepath signals in azimuth is

• 8° either side of the centre line out to a distance of 10 nm

• 10° either side of the centre line out to a distance of 8 nm

• 35 ° either side of the centre line out to a distance of 17 nm

• 17° either side of the centre line out to a distance of 35 nm

When using the ILS, a false glidepath is _____

• Always found above the real glidepath

• Always found below the real glidepath

• Found both above and below the real glidepath

• Not found in NZ because of the clearance pattern that is transmitted over the glidepath pattern

The correct ROD for an aircraft on a 3° glideslope with a groundspeed of 142 Kt at a distance of 4 nm from the threshold is

• 700 fpm

• 1010 fpm

• 710 fpm

• 450 fpm

You are using an ILS with a 3° glidepath. Your groundspeed is 180 kts and you are 4 nm from touchdown. What should be your ROD and height passing?

• ROD - 1200fpm HEIGHT - 1900ft

• ROD - 1200fpm HEIGHT - 900ft

• ROD - 900fpm HEIGHT - 1200ft

• ROD - 900fpm HEIGHT - 900ft