Rnav Flashcards by Lee Johnston

What does MAP mode show on EFIS?

Partial Compass Rose

NO North Arrow

Triangular Aircraft

WXR

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What shape is the Earth in WGS 84?

An ellipsoid

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DME Max error is?

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

OR 0.2NM on 95% of occassions after 1989

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ILS LOC Frequency

108MHz to 111.95MHz (Odd kHz)

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GPS NAVSTAR Frequencies

1575.32MHz L1
P and C/A

1227.6MHz L2

P Only

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NDB Frequency and ITU Classification

190kHz to 1750kHz

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

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VOR CDI Full Scale Deflection is ___ degrees

10 Degrees - VOR CDI Full Scale Deflection

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

090 degrees

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ILS GS Frequency Range?

329MHz to 335MHz (UHF)

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Galileo Orbital Plane?

56 Degrees

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SSR - P4 - Allcall

Long P4 - all A/C/S responds

Short P4 - Only mode S

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Radar - Maximum Unambiguous Range?

Speed of Light
2x Pulse repetition Frequency

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VOR Frequency

108MHz to 117.975MHz

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

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DME Pulse separation?

12uS

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DME Offset Reply Frequency by?

63MHz

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NAVSTAR GPS Orbital Plane?

55 Degrees

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VHF DF Classes?

Class A - 2 Degrees

Class B (Most Common) - 5 Degrees

Class C - 10 Degrees

Class D - Above 10 Degrees

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Skywave Travels?

Refracted by ionosphere

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DME Frequencies?

960-1215MHz

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VHF DF - QTE

True FROM Station

From to mE

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What is a locator?

LF/MF NDB used as aid for approach .

Range of 10 - 25nm

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VOR Cone of confusion is ___nm at _____ feet.

12nm at 30000 feet

(50 degrees from vertical)

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Outer Marker Morse?

O (Think of SOS)

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LAAS/GAAS Range?

19nm or 30km

Rnav P2 Sidelobe Suppression

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

GLONASS Orbital Plane

64.8 Degrees

Second conversions... ms and uS

ms = 1/1000 (1 x10^-4) uS = 1/100,000 (1x10^-6)

DME Delay in response?

50uS

Power required to double range?

4x (2²⁾ Power 16x (4²⁾Power for Primary Radar (due to return) (Inverse Square Law)

MLS Lateral approach zone?

+ or - 40 degrees from centre-line 20NM out

Why is Mode S Required for TCAS II

To provide a datalink for coordination of evasive manoeuvres between aircraft

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

Reduces by 1

Atomic Clocks in Galileo?

Rubidium and Passive Hydrogen Maser Clocks

Ellipsoid in Galileo?

ETRS-89

Quadrantal Error (NDB reception)

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

Full scale deflection of ILS Glideslope Indicator

0.7 Degrees

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

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

RNAV5 Used for?

En-Route Continental and Arrival stages of flight

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

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

ILS GS Intercepted at what distance normally?

3 and 10NM

ILS CATII?

DH lower than 200' not less than 100' RVR of not less than 300M

Ground wave distance (based on TX power in Watts)

2 sq.rt(power) - Land 3 sq.rt(power) - Sea

VOR Scalloping?

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

VOR Site-Error

Caused by reflections close to VOR transmitter

GBAS Coverage

15NM at 35 Degrees of Centreline 20NM at 10 Degrees of Centreline

ILS LOC Full Scale Deflection

2.5 Degrees

ILS LOC Range

17NM at 35 Degrees of Centreline 25NM at 10 Degrees of Centreline

ILS Glideslope Range and Angles

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

Beam Bends in ILS Approach Path are...

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

Allowed Hold Entry sectors when using DME Arc entry

Sector 1 & 3

Colocated DME/VOR Max distance apart?

600M - En-Route 30M - Terminal

Mode S Altitude Reporting accuracy

25ft

Mode C Altitude Reporting Accuracy

100ft

Longest Surface Waves

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

Ionospheric Layers

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

Marker distances?

5nm - Outer 1nm - Middle Threshold - Inner

Number of MLS channels?

200 (300kHz spacing)

ATC En-Route Radar Range

200-300NM

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

Sphere - Satellite