Flight planning

Question 1

What is MORA?

Answer 1

Minimum off route altitude. There are two types of minimum Off route altitudes, route mora and grid mora.
MORAS do not provide for navigation do not provide navigation signal or communication coverage.

Question 2

What is route MORA?

Answer 2

Provides an obstacle clearance above terrain or man made structures within 10nm on both sides and within a 10 nm radius around the ends of the airway.
Route MORAS give at least 1000ft altitude clearance. and 2000ft in mountainous terrain

Question 3

What is Grid MORA

Answer 3

Obstacle clearance altitude above terrain within latitude and longitude blocks, usually of one degree by one degree.
Clear all terrain by 1000ft when highest MSL are 5000ft or lower and clear by 2000ft where elevation is 5001ft and higher.

Question 4

What is MOCA?

Answer 4

Minimum obstruction clearance altitude. Lowest published altitude in effect between radio fixes on VOR airways, off route airways, or route segments.
Max terrain elevation plus 1000ft, 2000ft above 50001

Question 5

What is MOCA always below

Answer 5

MOCA is always at or below MEA MRA

Question 6

What is safety height?

Answer 6

The safety height is based on the Jeppesen Grid minimum off route altitude, Provides an area 50nm either side of track and a 50nm semi circular around each end ot the sector considered.