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Operational Procedures > NAT HLA Airspace > Flashcards

NAT HLA Airspace Flashcards

1
Q

What is required to enter the NAT HLA airspace

A

At least two fully serviceable long range navigation systems

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2
Q

Nat Contingencies

A

5NM offset left or right (30 degree turn)
500ft vertical offset
Descend below FL290 if possible

300ft climb/descent for weather deviation

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3
Q

PBN - RNAV 10 =

A

RNP 10 due to cost of changing nav specification

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4
Q

Changes in ETAs along North Atlantic must be made to ATC if changes are more than

A

3 minutes

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5
Q

NAT operating procedures need training of flight crew prior to operating within the NAT HLA with primary objective of training to

A

Highlight the risks of complacency and lack of adherence of SOPs due to over reliance on the provision and reliability of modern aeroplane systems

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6
Q

Oceanic clearance to be received when

A

At least 40 minutes prior to oceanic entry point ETA
Iceland 20 minutes

Airports within 40 minutes of boundary clearance before take off

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7
Q

Minimum lateral separation in NAT region in below or above MNPS

A

60nm between aircraft meeting minimum navigation performance specifications

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8
Q

Random routes waypoints spacing

A

10 degrees of longitude

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9
Q

Random routes are crossed at

A

Whole or half degrees of latitude

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10
Q

Recommended max time between random routes waypoints

A

60 minutes

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11
Q

Single LRNS routes

A

Blue spruce routes
Tango routes

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12
Q

Random routes should be what type of route

A

Great circle courses joining waypoints

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13
Q

Pre flight checks for NAT HLA flights by commander include

A

Master clock sync
Dual LRNS check
IRS/INS aligned
LRNS software and FMS up to date
Each pilot independently verifies lat/long of waypoint entries
Upload winds
Confirm present position
Groundspeed check (0)

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14
Q

Equipment required for NATs

A

2 x altimeters
1 altitude holding/altitude alerting
Transponder
Long range communication systems x2
HF radio
SATCOM for CPLDC
Altimeter within +-200ft accuracy

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15
Q

RCP 240

A

CPDLC communication method within 4 minutes of receiving message to action from the pilot

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16
Q

RSP 180

A

ASD-C main means of surveillance

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17
Q

HF frequencies used day and night

A

Night = lower 7MHZ
Day = Higher 8MHZ

18
Q

123.45MHz

A

Global air to air frequency used when out of range of VHF stations for exchange of ops info

19
Q

Requirements for blue spruce routes

A

Only 1 LRNS required
State approval for NAT HLA airspace required
Over Greenland
Used by ac not capable of performance based communication system track routes (vip routes)

20
Q

NAT HLA vertical extent

A

FL285 to FL420

21
Q

Random routes - East to west

A

10 degrees longitude crossed at whole or half degree of latitude

22
Q

Random routes - North south directions

A

Separated by parallels of 5 degrees latitude
Crossed at whole degrees of longitude

23
Q

Random routes on ATS flight plan are to use

A

DCT to each lat long

24
Q

OTS Stands for

A

Organised track system

25
Q

SLOP

A

Strategic lateral offset procedure’s

Any track using 0.1nm offset to the right of the designated track up to 2nm

26
Q

OCA stands for

A

Oceanic control area

27
Q

MASPS

A

Minimum aircraft system performance specification

28
Q

When must you inform ATC if your ETA to entry point is to change

A

2 minutes

29
Q

Frequencies used for communications in NAT HLA at night are generally

A

Less than 7MHZ at night

30
Q

Frequencies used for communication in NAT HLA in the day

A

Greater than 8MHZ

31
Q

Frequency used for pilot to pilot exchanges of operationally significant information

A

123.45MHz

32
Q

OTS vs PBCS

A

OTS separated by 1 degree of latitude
PBCS separated by 0.5 degree of latitude

33
Q

How many nm must a pilot diverge before the pilot changes his altitude to inform ATC?

A

5nm

SAND

South ascend
North descend

34
Q

NATs transponder operation

A

Keep assigned transponder code for 30 minutes then switch to 2000

35
Q

Minimum longitudinal separation for turbojets in NAT airspace flying with and without Mach number technique

A

15 minutes without Mach number technique
10 minutes with Mach number technique

36
Q

Minimum longitudinal separation for non turbojet aircraft

A

30 minutes
20 minutes in West Atlantic route system

37
Q

How many HF frequencies have been allocated and frequency band for North Atlantic Region

A

24 covers 2.8 to 18Mhz

38
Q

When shall crew report ATC deviations from assigned FL in NAT HLA

A

300ft or more

39
Q

MNPS Airspace latitudes

A

27n to the North Pole

40
Q

Failure of INS how can pilot navigate safely in polar regions

A

Plot aircraft position and time on a polar stenographic chart

41
Q

SLOP vs NAT contingency

A

SLOP right only 1 or 2 nm offset
NAT contingency right or left 5nm offset

Operational Procedures (17 decks)

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