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UK ADI EU340 > ACFT > Flashcards

ACFT Flashcards

1
Q

What is the civil VHF comms spectrum?

A

117.975 to 137.000MHz

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2
Q

What is the DOC?

A

Desiginated Operational Coverage

A term used to declare the coverage boundary of a station.

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3
Q

What factors can affect the DOC of a VHF station?

A
  • Position of transmitter
  • Power of transmitter
  • Altitude of recipient
  • Local terrain
  • Enviornmental/ Met phenomena
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4
Q

What is CPDLC?

A

Controller Pilot Datalink Communications

A data link that allows for the transfer of text messages between ATC and the pilot, these messages can be uplinked straight to the FMS making them automatic.

Improves communication capabilities in oceanic areas.

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5
Q

What are the benefits of CPDLC?

A
  • Allows flight crew to print messages, less ambiguity especially for foreign pilots
  • Allows auto uplink of messages straight into the FMS
  • Allows crews to downlink complex route clearances and requests.
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6
Q

What is SELCAL?

A

Selective calling

Basically a way of reducing pilot fatigue by no longer requiring them to maintain a constant listening watch. A selective call will be sent to the aircraft which will create a visual and aural alarm in the cockpit letting them know that ATC wishes to talk to them.

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7
Q

What is ACARS?

A

Aircraft Communications Addressing and Reporting System

A system similar to CPDLC which is used by the airline/operater to speak or download parameters from the aircraft.

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8
Q

What is the approach category of an aircraft?

A

A speed which is used to create a standardised basis for aircraft manoeuvrability when conducting instrument approaches.

This is defined as 1.3x the stall speed of the aircraft in the landing configuration at maximum certificated landing mass.

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9
Q

What are the approach categories?

A

A= Less than 91kts IAS

B=91-120kts IAS

C=121-140kts IAS

D=141-165kts IAS

E= 166-210kts IAS

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10
Q

What is OCH/OCA?

A

Obstacle Clearance Height/Altitude

The lowest height/altitude above the elevation of the relevant runway threshold or above the aerodrome elevation as applicable used in establishing compliance with the appropriate obstacle clearance criteria.

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11
Q

What is VM (C)?

A

Visual Manoeuvring (circling) in the vicinity of aerodrome

Terms describing the visual phase of flight, after completing an instrument approach, where an a/c is manoeuvred into position for a landing on a runway not suitably located for a straight in approach.

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12
Q

What is the VM (C) area?

A

Area in which obstacle clearance has been considered for a/c manoeuvring visually before landing. Determined by drawing arcs centred on each runwa threshold and joining these arcs with tangent lines.

Related to:

  • A/C Cat
  • Speed for each cat
  • Wind speed
  • Bank angle

It is permissable to elminate a sector from this area if it contains obstacles which would make the OCH/OCA unacceptable.

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13
Q

What is wake turbulence?

A

It is the effect of the rotating air masses generated behind the wing tips of large jet aircraft

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14
Q

What is a wake vortex?

A

Describes the nature of the air masses, similar to a tornado

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15
Q

What are the European Wake turbulence categories?

A

Super (J)- A380

Heavy (H)- A/C of MTOW 136,000kg or more

Medium- between 136,000kg-7,000kg

Light- A/C with MTOW of 7,000kg or less

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16
Q

What considerations should a controller have regarding helicopters and wake vortices?

A

Helicopters should be kept well clear of light aircraft when air-taxiing or hovering as they produce vortices that are more powerful for their weight than fixed wing aircraft.

17
Q

What are the three basic effects of wake turbulence on a following aircraft?

A

Induced Roll (greatest danger)

Loss of height or rate of climb

Possible structural stress

18
Q

In what circumstances should a controller take Jet Blast or Propeller Slipstream into account?

A
  • When taxiing aircraft behind
  • Aircraft taking-off or landing particularly on intersecting runways
  • Vehicles and personnel operating on the aerodrome.
19
Q

What window between flight planned departure time can an aircraft depart?

A

+/- 15mins

20
Q

What window for departure do aircraft with a CTOT have?

A

-5 +10 minutes

21
Q

To whom do Noise Abatement routes apply to?

A

To all jets and turboprop over 5,700kg

22
Q

What factors affect an aircraft during take-off?

A
  1. Take off mass
  2. Power
  3. Elevation of airfield
  4. Runway (length, slope, construction, contamination)
  5. Air temperature
  6. Wind
  7. Noise abatement and ATC
  8. Company instructions
  9. Pilot preferences
  10. Servicability
23
Q

What factors affect an aircraft during landing?

A
  1. Landing mass
  2. Elevation of airfield
  3. Runway (length, slope, construction, contamination)
  4. Air temperature
  5. Wind
  6. ATC
  7. Company instructions
  8. Pilot preferences
  9. Servicability

UK ADI EU340 (14 decks)

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