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6/17/21 

AIM 

FIG 2

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23 

Helicopter Landing Areas 

e.  Temporarily Closed Runways and Taxiways. 

To provide a visual indication to pilots that a runway 
is temporarily closed, crosses are placed on the 
runway only at each end of the runway. The crosses 
are yellow in color.  (See FIG 2

3

22.) 

1. 

A raised lighted yellow cross may be placed 

on each runway end in lieu of the markings described 
in Subparagraph e,Temporarily Closed Runways and 
Taxiways, to indicate the runway is closed. 

2. 

A visual indication may not be present 

depending on the reason for the closure, duration of 
the closure, airfield configuration, and the existence 
and the hours of operation of an airport traffic control 
tower. Pilots should check NOTAMs and the 
Automated Terminal Information System (ATIS) for 
local runway and taxiway closure information. 

3. 

Temporarily closed taxiways are usually 

treated as hazardous areas, in which no part of an 
aircraft may enter, and are blocked with barricades. 
However, as an alternative, a yellow cross may be 
installed at each entrance to the taxiway. 

f.  Helicopter Landing Areas. 

The markings 

illustrated in FIG 2

3

23 are used to identify the 

landing and takeoff area at a public use heliport and 
hospital heliport. The letter “H” in the markings is 
oriented to align with the intended direction of 
approach. FIG 2

3

23 also depicts the markings for 

a closed airport. 

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3

7.  Airport Signs 

There are six types of signs installed on airfields: 
mandatory instruction signs, location signs, direction 
signs, destination signs, information signs, and 
runway distance remaining signs. The characteristics 
and use of these signs are discussed in Para-
graph 2

3

8, Mandatory Instruction Signs, through 

Paragraph 2

3

13, Runway Distance Remaining 

Signs. 

REFERENCE

 

AC150/5340

18, Standards for Airport Sign Systems for Detailed 

Information on Airport Signs. 

Airport Marking Aids and Signs 

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