What does OROCA Guarantee

[Tooslow]

Do you know, I cannot find it in my crashpad books. I think it is 1,000 feet above the highest obstacle in that grid?

 

[avratdwc]

Off Route Obstruction Clearance Altitude.

I believe it will only guarantee obstruction clearance and does not guarantee nav reception.

I am pretty sure that is it. Check in the AIM

Avrat

 

[Tooslow]

Yes, but by what altitude?

 

[BellyFlyer]

My first thought is 1000' and 2000' in 'mountainous' areas. Have to look it up, though.

 

[avratdwc]

I believe 1000 in non mountainous areas and 2000 in declared mount. areas.

maybe I am not understanding your question

 

[flx757]

That is correct. OROCA (Off Route Obstacle Clearance Altitudes) provides obstacle clearance with a 1000 ft buffer in designated non-mountainous areas and a 2000 ft buffer in designated mountainous areas within the US.

 

[flewa72]

From the AIM

An off-route altitude which provides obstruction clearance with a 1,000 foot buffer in non-mountainous terrain areas and a 2,000 foot buffer in designated mountainous areas within the United States. This altitude may not provide signal coverage from ground-based navigational aids, air traffic control radar, or communications coverage.

 

[Tooslow]

Thanks, I don't have an AIM available...................................

 

[KingAirer]

I believe this is called MORA in jepp format, this may leading to some of your confusion.