Aviation Charts Flashcards
Aviation charts are published by who in the UK
NATS
(National Air Traffic Services)
1:500,000 scale chart commonly shows all airspace below what flight level
FL195
1:500,000 scale chart is commonly referred to as what
HALF MIL
1:250,000 scale chart is commonly referred to as what
QUARTER MIL
REMEMBER: 25 is quarter of 100
Elevations are shown in reference to height above which datum
AMSL
(Above Mean Sea Level)
Elevations on a chart are not shown unless they reach ____ ft or more
500 ft
A man-made object that protrudes above the surface is known as what
OBSTRUCTION
4 examples of an obstruction that appear on aviation charts
- Masts
- Pylons
- Radio Towers
- Tall buildings
Obstructions are not shown on a chart unless they reach ____ ft from which datum
- 328 ft
- Above Surface
Tall obstructions over ____ ft from ____ datum have 2 figures shown against them
AMSL and ( AGL )
- 1000 ft
- AGL
Tall obstructions 1000ft or more above ground level have two figures shown.
The figure in brackets shows the height of the obstruction above ground level
What is MEF known as, and what datum is it referenced to
- MAXIMUM ELEVATION FIGURE
- AMSL
An MEF is marked on charts of each ____ min lat/long grid
30 min
The MEF for a grid is the higher of which 2 reference points
- Tallest obstacle
- Highest Terrain (plus 328 ft)
REMEMBER!!!: Highest terrain would include a clearning of 328 ft as obstacles are not referenced below 328 ft.
MEFs are rounded UP or DOWN to the next ____ ft
- UP
- 100 ft
3 chart features that mark designated areas of airspace where caution must be exercised
- DANGER
- RESTRICTED
- PROHIBTED
What is the significance of a danger area prefixed with an asterix ( * )
Protected by by-law
Some danger areas have a DACS or DAAIS. What are these
- Danger Area Crossing Service
- Danger Area Activation Information Service
Can telephone or radio ahead to seek clearance to cross danger area
Which publication can a pilot obtain more information on a danger area
AIP
(ENR section)
How do you read the following danger zone information;
D121/0.6
Danger Zone 121
From surface up to 600 ft AMSL
Chart Features
What is HIRTA
High Intensity Radio Transmission Areas
Can be dangerous to aircraft equipment and pilot health
Chart features
What is a GVS
Gas Venting Station
Vents gas at high pressure into the atmosphere above
Chart features
A VOR on a chart is identified by what symbol
HEXAGON and DOT
Chart features
A DME on a chart is identified by what symbol
SQUARE and DOT
Chart features
A VOR/DME on a chart is identified by what symbol
HEXAGON within a SQUARE with a DOT
Chart features
An NDB on a chart is identified by what symbol
CIRCLE with MULTIPLE DOTS
What does VOR stand for
VHF Omnidirectional Range
What does DME stand for
Distance Measuring Equipment
What does NDB stand for
Non-Directional Beacon
What frequency bands are VORs operating on
VHF - MHz
REMEMBER: VORs are VERY High
What frequency band are NDBs operating on
MF/LF - kHz
Chart features
An instrument approach on a chart is identified by what symbol
ARROW FANS
Chart features
What is a TMZ
Transponder Mandatory Zone
Chart features
How is a TMZ identified on an aviation chart
LIGHT PINK SEMICIRCLES
What are the mandatory rules of entry for a TMZ according to SERA
A working Mode C or Mode S is MANDATORY for transit (without radio contact)
If aircraft not equipt with Mode C or Mode S, transit clearance is required from ATSU
