NAOPM (TCAS & ILS- Finals) Flashcards
special system designed to reduce the incidence of Mid-air Collisions (MAC) between aircraft
Traffic alert and Collision Avoidance System
According to ICAO, all aircraft with MTOW over _____ kg or carry more than ____ passengers are compulsory to equipped with TCAS.
- 5700 kg
- 19 passengers
Aviation accident in which two or more aircraft come into contact during flight
Mid-air collision
TCAS operates by actively interrogating other aircraft equipped with
Mode C or Mode S transponders
What frequency does TCAS use to send signals
1030 MHz
What frequency does TCAS use to receive signals
1090 Mhz
TCAS predicts potential conflicts and issues advisories if a collision risk is detected by calculating this
Time to closest approach
TCAS is also known as
Airborne Collision Avoidance System
Two types of advisories
- Traffic Advisories
- Resolution Advisories
Alerts pilots to the presence of nearby aircraft, prompting them to visually locate the potential threat.
Traffic Advisories
Provide specific instructions to climb or descend to maintain safe separation between aircraft
Resolution Advisories
TCAS equipment
- TCAS display
- TCAS antenna
Ground-based radio beam transmitter that provides a direction to an aircraft approaching and landing on a runway
Instrument landing system
ILS-types of runway approach
- Non-instrument runway
- Instrument runway (Non-precision runway & precision runway)
ILS components
- Ground installation
- Airborne Equipments
3 equipments for ground installation
- Ground localizer
- Ground glide path antenna
- Marker beacons
2 equipments for airborne equipments
- Localizer & Ground plane antenna, ILS indicator
- Marker beacon antenna and indicator
Provides horizontal navigation for ILS
ground localizer antenna
Provides vertical navigation for ILS
Ground glide path antenna
Provides aircraft’s height & distance to runway for ILS
Marker beacons
Localizer operates in what frequency band
VHF band: 108 Mhz to 117 Mhz
In localizer which side has 90 Hz modulation and which side has 150 Hz modulation
Left side: 90 Hz
Right side: 150 Hz
In glide slope which side has 90 Hz modulation and which side has 150 Hz modulation
Upper: 90 Hz
Lower: 150 Hz
Marker beacon operates at a carrier frequency of
75 Mhz
Distance from RWY and color of outer marker beacon
- 7.2 to 10km
- Blue
Distance from RWY and color of middle marker beacon
- 1100 km
- Amber
Distance from RWY and color of inner marker beacon
- 300m
- White
