MORA MSA MEA

Question 1

What is the obstacle clearance on the Jeppesen Charts?

Answer 1

1000 ft for elevations up to 5000 ft
2000 ft for elevations from 5001 ft and upwards

Question 2

What is the safe distance around an airway with regards to obstacle clearance?

Answer 2

10 nm either side and 10 nm beyond reporting points

Question 3

What happens when winds are deflected around high terrain?

Answer 3

They tend to increase in speed which creates a local decrease in pressure which results in an error on the altimeter.

Question 4

Define MSA?

Answer 4

Gives 1000 ft terrain clearance within 25nm from a reference point. It’s for emergency use and doesn’t always guarantee NAVAID reception.
Reference point might not be at the airport

Question 5

What is the MSA for a GPS approach referenced to?

Answer 5

The Missed Approach Point

Question 6

What is the MSA for an RNAV approach referenced to?

Answer 6

The Runway Waypoint (RWxx) for straight-in approaches

Question 7

What is the definition MEA?

Answer 7

The lowest published altitude between radio fixes that meets obstacle clearance requirements between those fixes, and in many countries, assures navigational signal coverage

Question 8

What is the definition of MOCA?

Answer 8

The lowest published altitude in effect between radio fixes or route segments which meets obstacle clearance requirements for the entire route segment

Question 9

What is the definition of MORA?

Answer 9

Provides obstruction clearance 10 nm either side of the route centerline including a 10 nm radius beyond the radio fix reporting or milage break defining the route segment

Question 10

What is the definition of minimum safe altitude?

Answer 10

The lowest of MEA, MOCA or MORA

Question 11

How is the effects of increased windspeeds around high terrain accounted for on the CFP?

Answer 11

Within 20nm of terrain with a max elevation exceeding 2000 ft
* 2000-8000ft = +500(0-30), +1000(31-50), +1500(51-70),
+2000(>70kts)
* Above 8000ft = +1000, +1500, +2000, +2500