TCAS/ACAS Flashcards
Which aircraft are mandated to carry and operate ACAS II equipment?
And what a/c are exempt?
MTOM exceeding 5,700kg
More than 19 seats
All Fixed Wing Turbine
Certain civil- registered historical, and military aircraft.
The CAA has endorsed European Policy to conform with what?
ICAO ACAS II SARPS
The only equipment currently available to meet ACAS II requirements is?
TCAS II
Airborne Collision Avoidance System (ACAS): An aircraft system based on________/________/______
Which operates _______/_______/_______/________/________ to provide advice to the pilot on potential_______/________ that are equipped with ______/_______
On SSR transponder signals
Independently of ground based equipment
Conflicting traffic
SSR Transponders
Does TCAS 1 Provide a Resolution Advisory (RA)?
No it doesn’t
What data does TCAS II uses ?
How is this data obtained?
What does this data determine?
Range and altitude.
By interrogating other aircraft transponders to determine the possibility of collision.
Can TCAS II present bearing information?
Yes, TCAS II can present bearing information of a/c intruding into your airspace.
The bearing information on the display is only to?
Assist in visual acquisition of an intruder
When range and altitude of an intruder are computed and a collision risk is predicted TCAS II will declare the intruder a?
And give?
“threat”
Manoeuvre advice in visual and aural form
Avoidance manoeuvres using TCAS II are in the?
Vertical plane only.
Why doesn’t TCAS give bearings to assist in avoiding the “threat”?
Bearing information produced by TCAS II does not process the accuracy necessary for determining horizontal avoidance manoeuvres.
MODE A/C transponders give?
Both Traffic Advisory (TA) and Resolution Advisory (RA)
What happens if the Mode C is not available?
The TCAS is unable to provide either TA or RA. Any manoeuvre may not be in the logical sense.
What does a Mode S transponder do?
Provides both a TA and RA by communicating with each other and “agree” a course of action.
TCAS depends entirely on?
SSR.
No Transponder means?
No TCAS alert
What are the key components of TCAS?
5 things
1) Antenna
2) TCAS processor
3) Transponder Control Panel
4) VSI- Display
5) Voice Warning System
A protected volume of airspace surrounds each ACAS II equipped aircraft.
True or False?
True.
The size of the protected volume of airspace depends upon the?
1) Altitude
2) Speed
3) Heading
Of the aircraft involved in the encounter.
What is the Traffic Advisory (TA) Region if protected volume of airspace?
+/- 850ft
What is the Resolution Advisory (RA) Region if protected volume of airspace?
+/- 600ft
What is the symbol for Non-Altitude Reporting Traffic?
A hollow white diamond
Explain Non-Altitude Reporting Traffic.
TCAS has no way of determining whether this is a threat as No Mode C data is being transmitted.
What is the Non- Threat Traffic Symbol on the display?
A hollow white diamond
Explain Non-Threat Traffic
A common display situation, usually multiple contacts.