Rnav

Question 1

What does MAP mode show on EFIS?

Answer 1

Partial Compass Rose

NO North Arrow

Triangular Aircraft

WXR

Question 2

What shape is the Earth in WGS 84?

Answer 2

An ellipsoid

Question 3

DME Max error is?

Answer 3

+/- 0.25NM + 1.25% of range (pre 1-Jan-1989)

OR 0.2NM on 95% of occassions after 1989

Question 4

ILS LOC Frequency

Answer 4

108MHz to 111.95MHz (Odd kHz)

Question 5

GPS NAVSTAR Frequencies

Answer 5

1575.32MHz L1
P and C/A

1227.6MHz L2

P Only

Question 6

NDB Frequency and ITU Classification

Answer 6

190kHz to 1750kHz

N0N Carrier - A1A (long range - keyed) or A2A

Question 7

VOR CDI Full Scale Deflection is ___ degrees

Answer 7

10 Degrees - VOR CDI Full Scale Deflection

Question 8

Indication of FROM/TO for VOR shifts flips when value difference between selected course and current radial is

Answer 8

090 degrees

Question 9

ILS GS Frequency Range?

Answer 9

329MHz to 335MHz (UHF)

Question 10

Galileo Orbital Plane?

Answer 10

56 Degrees

Question 11

SSR - P4 - Allcall

Answer 11

Long P4 - all A/C/S responds

Short P4 - Only mode S

Question 12

Radar - Maximum Unambiguous Range?

Answer 12

Speed of Light
2x Pulse repetition Frequency

Question 13

VOR Frequency

Answer 13

108MHz to 117.975MHz

(Shared with ILS between 108-112MHz - uses Even kHz)

Question 14

DME Pulse separation?

Answer 14

12uS

Question 15

DME Offset Reply Frequency by?

Answer 15

63MHz

Question 16

NAVSTAR GPS Orbital Plane?

Answer 16

55 Degrees

Question 17

VHF DF Classes?

Answer 17

Class A - 2 Degrees

Class B (Most Common) - 5 Degrees

Class C - 10 Degrees

Class D - Above 10 Degrees

Question 18

Skywave Travels?

Answer 18

Refracted by ionosphere

Question 19

DME Frequencies?

Answer 19

960-1215MHz

Question 20

VHF DF - QTE

Answer 20

True FROM Station

From to mE

Question 21

What is a locator?

Answer 21

LF/MF NDB used as aid for approach .

Range of 10 - 25nm

Question 22

VOR Cone of confusion is ___nm at _____ feet.

Answer 22

12nm at 30000 feet

(50 degrees from vertical)

Question 23

Outer Marker Morse?

Answer 23

O (Think of SOS)

Question 24

LAAS/GAAS Range?

Answer 24

19nm or 30km

Question 25

Rnav P2 Sidelobe Suppression

Answer 25

Works by transmitting P2 pulse on omnidirectional antenna. If P2 is more than P1 aircraft is receiving a sidelobe and inhibits reply

Question 26

GLONASS Orbital Plane

Answer 26

64.8 Degrees

Question 27

Second conversions… ms and uS

Answer 27

ms = 1/1000 (1 x10^-4)

uS = 1/100,000 (1x10^-6)

Question 28

DME Delay in response?

Answer 28

50uS

Question 29

Power required to double range?

Answer 29

4x (2²⁾ Power

16x (4²⁾ Power for Primary Radar (due to return)

(Inverse Square Law)

Question 30

MLS Lateral approach zone?

Answer 30

+ or - 40 degrees from centre-line

20NM out

Question 31

Why is Mode S Required for TCAS II

Answer 31

To provide a datalink for coordination of evasive manoeuvres between aircraft

Question 32

Using Baro input to a RAIM GPSS system does what to the number of sats required?

Answer 32

Reduces by 1

Question 33

Atomic Clocks in Galileo?

Answer 33

Rubidium and Passive Hydrogen Maser Clocks

Question 34

Ellipsoid in Galileo?

Answer 34

ETRS-89

Question 35

Quadrantal Error (NDB reception)

Answer 35

Due to re-radiation of signal from Aircraft structure. Most at 45 and 135 degrees each side (Quadrants!)

Question 36

Full scale deflection of ILS Glideslope Indicator

Answer 36

0.7 Degrees

Question 37

RNAV/RNP 10, RNP 4 and RNP 2 used for?

Answer 37

En-route Oceanic and Remote Airspace (RNP2 also en-route continental)

Question 38

RNAV5 Used for?

Answer 38

En-Route Continental and Arrival stages of flight

Question 39

Authorisation for A-RNP also includes authorisation for what other types of routes?

Answer 39

RNAV5, RNAV2, RNAV1, RNP2, RNP1 and RNP APCH

Question 40

ILS GS Intercepted at what distance normally?

Answer 40

3 and 10NM

Question 41

ILS CATII?

Answer 41

DH lower than 200’ not less than 100’

RVR of not less than 300M

Question 42

Ground wave distance (based on TX power in Watts)

Answer 42

2 sq.rt(power) - Land

3 sq.rt(power) - Sea

Question 43

VOR Scalloping?

Answer 43

Bearing - Rapid deviation due to reflections at limit of VOR range

Question 44

VOR Site-Error

Answer 44

Caused by reflections close to VOR transmitter

Question 45

GBAS Coverage

Answer 45

15NM at 35 Degrees of Centreline

20NM at 10 Degrees of Centreline

Question 46

ILS LOC Full Scale Deflection

Answer 46

2.5 Degrees

Question 47

ILS LOC Range

Answer 47

17NM at 35 Degrees of Centreline

25NM at 10 Degrees of Centreline

Question 48

ILS Glideslope Range and Angles

Answer 48

Range 10NM with 8 Degrees of centreline (8NM on a steep GS)

Lower Lobe bottom - 0.45 x Glidepath Angle

Higher Lobe top - 1.75 x Glidepath Angle

Question 49

Beam Bends in ILS Approach Path are…

Answer 49

Slight curves that can be followed - generally due to interference or fixed objects

Question 50

Allowed Hold Entry sectors when using DME Arc entry

Answer 50

Sector 1 & 3

Question 51

Colocated DME/VOR Max distance apart?

Answer 51

600M - En-Route

30M - Terminal

Question 52

Mode S Altitude Reporting accuracy

Answer 52

25ft

Question 53

Mode C Altitude Reporting Accuracy

Answer 53

100ft

Question 54

Longest Surface Waves

Answer 54

Low Frequency (4000NM in VLF, 1000NM in LF)

Question 55

Ionospheric Layers

Answer 55

D, E, F1 & F2 during Day

(Vary in height based on time of day, season and solar activity)

No D at night, F not split

Question 56

Marker distances?

Answer 56

5nm - Outer

1nm - Middle

Threshold - Inner

Question 57

Number of MLS channels?

Answer 57

200 (300kHz spacing)

Question 58

ATC En-Route Radar Range

Answer 58

200-300NM

Question 59

Range calculated from GPS Satellite using a _________ with the ________ at the centre

Answer 59

Sphere - Satellite