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6/17/21 

AIM 

FIG 5

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11 

Minimum Vectoring Altitude Charts 

013 

348 

057 

289 

277 

1500 

2000 

3000 

3000 

3000 

3500 

2500 

5000 

5500 

10 

15 

20 

25 

30 

102 

250 

160 

e.  Minimum Vectoring Altitudes (MVAs)

 are 

established for use by ATC when radar ATC is 
exercised. MVA charts are prepared by air traffic 
facilities at locations where there are numerous 
different minimum IFR altitudes. Each MVA chart 
has sectors large enough to accommodate vectoring 
of aircraft within the sector at the MVA. Each sector 
boundary is at least 3 miles from the obstruction 
determining the MVA. To avoid a large sector with an 
excessively high MVA due to an isolated prominent 
obstruction, the obstruction may be enclosed in a 
buffer area whose boundaries are at least 3 miles from 
the obstruction. This is done to facilitate vectoring 
around the obstruction.  (See FIG 5

4

11.) 

1. 

The minimum vectoring altitude in each 

sector provides 1,000 feet above the highest obstacle 
in nonmountainous areas and 2,000 feet above the 
highest obstacle in designated mountainous areas. 
Where lower MVAs are required in designated 
mountainous areas to achieve compatibility with 
terminal routes or to permit vectoring to an IAP, 
1,000 feet of obstacle clearance may be authorized 
with the use of Airport Surveillance Radar (ASR). 
The minimum vectoring altitude will provide at least 
300 feet above the floor of controlled airspace. 

NOTE

 

OROCA is an off

route altitude which provides obstruc-

tion clearance with a 1,000 foot buffer in nonmountainous 
terrain areas and a 2,000 foot buffer in designated 
mountainous areas within the U.S. This altitude may not 
provide signal coverage from ground

based navigational 

aids, air traffic control radar, or communications 
coverage. 

2. 

Because of differences in the areas consid-

ered for MVA, and those applied to other minimum 
altitudes, and the ability to isolate specific obstacles, 
some MVAs may be lower than the nonradar 
Minimum En Route Altitudes (MEAs), Minimum 
Obstruction Clearance Altitudes (MOCAs) or other 
minimum altitudes depicted on charts for a given 
location. While being radar vectored, IFR altitude 
assignments by ATC will be at or above MVA. 

3. 

The MVA/MIA may be lower than the TAA 

minimum altitude. If ATC has assigned an altitude to 
an aircraft that is below the TAA minimum altitude, 
the aircraft will either be assigned an altitude to 
maintain until established on a segment of a 
published route or instrument approach procedure, or 
climbed to the TAA altitude. 

Arrival Procedures 

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