Rnav Flashcards
What does MAP mode show on EFIS?
Partial Compass Rose
NO North Arrow
Triangular Aircraft
WXR
What shape is the Earth in WGS 84?
An ellipsoid
DME Max error is?
+/- 0.25NM + 1.25% of range (pre 1-Jan-1989)
OR 0.2NM on 95% of occassions after 1989
ILS LOC Frequency
108MHz to 111.95MHz (Odd kHz)
GPS NAVSTAR Frequencies
1575.32MHz L1
P and C/A
1227.6MHz L2
P Only
NDB Frequency and ITU Classification
190kHz to 1750kHz
N0N Carrier - A1A (long range - keyed) or A2A
VOR CDI Full Scale Deflection is ___ degrees
10 Degrees - VOR CDI Full Scale Deflection
Indication of FROM/TO for VOR shifts flips when value difference between selected course and current radial is
090 degrees
ILS GS Frequency Range?
329MHz to 335MHz (UHF)
Galileo Orbital Plane?
56 Degrees
SSR - P4 - Allcall
Long P4 - all A/C/S responds
Short P4 - Only mode S
Radar - Maximum Unambiguous Range?
Speed of Light
2x Pulse repetition Frequency
VOR Frequency
108MHz to 117.975MHz
(Shared with ILS between 108-112MHz - uses Even kHz)
DME Pulse separation?
12uS
DME Offset Reply Frequency by?
63MHz
NAVSTAR GPS Orbital Plane?
55 Degrees
VHF DF Classes?
Class A - 2 Degrees
Class B (Most Common) - 5 Degrees
Class C - 10 Degrees
Class D - Above 10 Degrees
Skywave Travels?
Refracted by ionosphere
DME Frequencies?
960-1215MHz
VHF DF - QTE
True FROM Station
From to mE
What is a locator?
LF/MF NDB used as aid for approach .
Range of 10 - 25nm
VOR Cone of confusion is ___nm at _____ feet.
12nm at 30000 feet
(50 degrees from vertical)
Outer Marker Morse?
O (Think of SOS)
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