flight planning and monitoring

ATPL (A)
Review Worksheets

033 FLIGHT PLANNING
& MONITORING




BY KDMN
2020

, I/VFR NAVIGATION
01 RADIO NAVIGATION CHART
a) RESTRICTED AIRSPACES:

➔ P area: strictly prohibited to air traffic.
➔ R area: restricted area, subject to certain condition.
➔ D area: danger area.


b) MINIMUM HEIGHT:

➔ Over high-density area: 1000ft above the highest obstacle in a 600m radius around the a/c.
➔ Otherwise, 500 ft above ground level or water level.


c) MINIMUM SAFE ALTITUDE MSA:

➔ If obstacle height ≤ 5000ft -> obstacle clearance is 1000ft.

➔ If obstacle height > 5000ft -> obstacle clearance is 2000ft.
➔ Shown by a magenta color on chart: 43=4300ft, within a rectangle.

➔ On VAC, MSA is represented by (upper right corner on the VAC chart):




d) ALTITUDE CORRECTION:

➔ From pressure: 1 HPa=28 ft or 30ft.
Ex1: Aerodrome Altitude = 2000 ft, QNH = 993. Δ(HPa) = 1013 – 993 = 20. Δ(ft)= 600ft -> PA =
2000 + 300 = 2600ft.
Ex2: Aerodrome Altitude = 2000ft QNH = 1023. Δ(HPa) = 1013 – 1023 = -10. Δ(ft)= -300ft ->
PA = 2000 - 300 = 1700ft.
To know if you have to add/subtract Δ(HPa), draw a schema knowing that pressure decreases
with altitude.


PA = 2600ft 2000ft
QNH = 993


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