MEA, MORA, usw...

[Sepp Grünauer]

Hallo Leute,

 

Hat wer von Euch einen guten Link zu Kürzelerkärung von MEA, MORA, MSA, MHA, usw....

 

Danke

[blackswan]

hallo Sepp,

 

MEA Minimum Safe En-route Altitude, seems to be equal to the MSA; definition by the ATLAS group

 

MCA / MCL Minimum Cruising Altitude / Minimum Cruising Level;

 

MOCA Minimum Obstacle Clearance Altitude; the minimum obstacle clearance is an altitude, which is calculated based on the topography of the over-flown area/ ground and the obstacles in this area; the area is defined as a square with a certain width beside of the flight path or as a grid network on the earth surface; depending of the highest elevation of the area a certain safety amount must be added to the altitude of the highest obstacle in the area; the sum of this safety amount and the highest elevation is called MOCA; this MOCA value includes NO influence of the specific aircraft performance (weight, weather, aircraft performance, cruise procedure) and standard procedures; A minimum MOCA over-land and over-sea must be checked!

 

MSA Minimum Safe Altitude; the minimum altitude, based on the MOCA, to give an approved vertical clearance over all terrain including danger areas and known obstacles; this value is to determine the minimum altitude that an aircraft could safely descend to in the event of an emergency; this MSA value includes NO influence of the specific aircraft performance (weight, weather, aircraft performance, cruise procedure); it could be a manually defined value, which should not be less than the calculated value; in general the MSA is used for en-route and the MORA for off-route; therefore the concerned area is defined through a width beside the route; for existing segments this value should be able to be viewed without flight plan calculation; A minimum MSA over-land and over-sea must be checked!A

 

MOA Minimum Operating Altitude; this altitude is a minimum flight altitude, at which the flight may be planned or operated, taking account of minimum standards and operating procedures, aircraft performance, current weight and current weather; therefore the concerned area is defined through a width beside the route; this value must be determined with each individual flight plan calculation; in general the MOA is used for en-route and the MORA for off-route;

MORA Minimum Off Route Altitude; a minimum flight altitude „beside“ of the track („off-route“) above ground, which is determined for a certain area (grid network), based on the MOCA and corrected for the aircraft performance, weather, weight and standard cruise procedures

 

SSA Sector Safe Altitudes; in the area of terminals the used „MSA“ valid for a control sector and a glide path

 

MGA Minimum Grid Altitude, seems to be a MOCA for a grid; definition by the ATLAS group

 

Gefunden, hier... (mit Blid)

 

http://www.luftpiraten.de/glos_m64.html

 

MHA Minimum Holding Altitude, the lowest altitude for a specific holding pattern which assures navaid reception and obstacle clearance

 

MRA Minimum Reception Altitude, the lowest altitude at which an intersection can be determined using the navaids that define the intersection.

 

etc.

 

mfg,

tobi

[Sepp Grünauer]

Recht herzlichen Dank Tobi :008: