COMNAV (2) Flashcards
It is a ground-based system that provides the pilot with a SLANT DISTANCE to the DME transmitter.
Distance Measuring Equipment (DME)
DME is a _______________ that works with an IFR-approved GPS or another approved navigation source.
secondary radar system
DME is defined as a navigation beacon, usually coupled with a _______________.
VOR
An aircraft can compute its distance to the beacon from the delay of the SIGNAL PERCEIVED by the aircraft’s DME equipment using the ________________.
speed of light
DMEs can also provide _______________ and _______________.
- groundspeed
- time-to-station readouts
2 modes for DME tracking
o one for searching the station and another
o for tracking the station using fewer signals
symbol of the DME
square
It is a ground-based navigation aid used in aviation.
Instrument Landing System (ILS)
It provides guidance to pilots during the final
approach and landing phase.
Instrument Landing System (ILS)
It allows an aircraft to approach until it is _____________ over the ground, within a _____________ of the runway.
200feet (61m)
1/2mile (800m)
3 Components of the ILS
Localizer
Glideslope
Marker Beacons
It provides lateral guidance to aircraft during the
approach.
Localizer
Localizer consists of a _____________ radio transmitter.
highly directional
Localizer uses _____________ to provide guidance to the left or right of the runway centerline.
amplitude modulation
It provides vertical guidance, ensuring the aircraft maintains the correct descent path.
Glideslope
Glideslope uses a _____________ technique to provide vertical guidance to the aircraft.
specific modulation
It used as additional reference points during the
approach.
Marker Beacons
3 types of marker beacon
outer marker
middle marker
inner marker
The _________ indicates the initial approach segment.
outer marker
The _____________ signifies the intermediate segment.
middle marker
The _______________ identifies the final approach segment.
inner marker
It located 4-7 miles from the runway threshold.
Color BLUE
OMI – O
It placed about 3500ft from the runway.
Color YELLOW
OMI – M
It placed between the MM and runway threshold.
Color WHITE
OMI – I
