Chapter 2 - Divisions of Airspace Flashcards
How is airspace around the world divided up?
Into FIRs - Each FIR is managed by a controlling authority responsible for providing ATS to aircraft flying within it.
Who is the controlling authority in the UK and who provides Air Traffic Services?
Controlling authority = CAA
Air Traffic Services provided by NATS
What are UK FIRs divided into?
Lower Airspace - Referred to as FIR
Upper Airspace - Referred to as UIR
What are the limits of Lower Airspace (FIR)?
Surface to FL245
What are the limits of Upper Airspace (UIR)?
FL245 to FL660
What classes of airspace are found in the UK?
Class A, C, D, E, G
What Class of airspace are most airways below FL195?
Class A
What Class are the airways and airspace between FL195 and FL245?
Class C
What Class are the airways and airspace found in the UIR, FL245 to FL660?
Class C
What is a CTR/CTZ and what class is the airspace?
CTR = Control Tower Region CTZ = Control Tower Zone
Surface to defined upper level around an aerodrome.
Class D
What is a CTA/TMA/TCA and what class is the airspace?
CTA = Control Area TMA = Terminal Manoeuvring Area TCA = Terminal Control Area
Above an aerodrome and the CTR/CTZ between determined FL limits.
Class D
When is a TMA or TCA established?
To control traffic in the vicinity of one or more major airfields (busy airspace above the area).
What are the dimensions of an ATZ?
2nm radius (or 2.5nm if the runway length > 1850m) Surface to 2000ft AAL (ABOVE AERODROME LEVEL)
Note - Therefore have to add on aerodrome elevation to your altitude if aiming to overfly whilst QNH/RPS is set
What are the dimensions of a MATZ?
5nm radius
Surface to 3000ft AAL
Stubs = 5nm long, 4nm wide (2nm either side of centreline)
1000ft to 3000ft AAL (1000ft gap underneath allows the stubs to be flown under)
What is a CMATZ?
Combined Military Aerodrome Traffic Zone - formed from adjacent MATZs.
What are the three designations of Airspace Reservation?
Prohibited
Danger
Restricted
What are the three statuses afforded to Airspace Reservations?
Permanent
Scheduled
Notified (NOTAMs)
Where can details on airspace reservation be found?
UK AIP and UK LFHB
Where restrictions are only applicable to military users (e.g. Provost Marshal’s Areas), details are published in the UK MilAIP.
What are the rules regarding prohibited areas?
No aircraft are permitted inside prohibited areas; only those specifically permitted to enter for operational reasons are exempt.
What are the rules regarding restricted areas?
Flights are subject to restrictions; where aircraft need to enter to perform authorised duty it must do so in compliance with ATC procedures.
What are Provost Marshal’s Areas?
Areas of prohibited (PMP Areas) or restricted (PMR) airspace defined by the RAF Provost Marshal.
Only applicable to military aircraft.
Details in UK MilAIP.
What do all aircraft need to fly in a Danger Area (DA)?
Authorisation
What is DACS?
Danger Area Crossing Service - A nominated ATC can give clearance to cross but will not provide separation from other traffic
What is DAAIS?
Danger Area Activity Information Service.
Provides info on the activity going on in the DA but it’s the pilots choice whether to enter/cross.
What are HIRTAs, how are they marked on charts and where can further details be found?
High Intensity Radio Transmission Areas
Marked on a map as a purple looking star surrounded by a purple circle.
Comms, weapons, navigation systems, etc may be affected in these areas.
Details in UK AIP and UK LFHB (Low Flying Handbook).
How are Areas to Avoid marked on charts?
Red diamond surrounded by a red circle.
What are MTAs?
Military Training Areas
What are AAIAs, ATAs and AARAs? Where can details be found?
Areas of Intense Aerial Activity
Aerial Tactics Areas
Air-to-Air Refuelling Areas
Details found in the UK Civ AIP.
Best to avoid, but if you are unable to do so it is advisable to make use of an ATC radar service.
What are TRAs?
Temporary Reserved Areas
Airspace that is normally under the authority of one aviation authority (i.e. CAA) and by agreement is temporarily reserved for use by another aviation authority (i.e. MAA).
Established between FL195 and FL245 in the UK.