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12/2/21 

Pilot/Controller Glossary 

RRIA

 

(See REROUTE IMPACT ASSESSMENT.) 

RSA

 

(See RUNWAY SAFETY AREA.) 

RTR

 

(See REMOTE TRANSMITTER/RECEIVER.) 

RUNWAY

 A defined rectangular area on a land 

airport prepared for the landing and takeoff run of 
aircraft along its length. Runways are normally 
numbered in relation to their magnetic direction 
rounded off to the nearest 10 degrees; e.g., Runway 
1, Runway 25. 

(See PARALLEL RUNWAYS.) 
(See ICAO term RUNWAY.) 

RUNWAY [ICAO]

 A defined rectangular area on a 

land aerodrome prepared for the landing and takeoff 
of aircraft. 

RUNWAY CENTERLINE LIGHTING

 

(See AIRPORT LIGHTING.) 

RUNWAY CONDITION CODES (RwyCC)

 Nu­

merical readings, provided by airport operators, that 
indicate runway surface contamination (for example, 
slush, ice, rain, etc.). These values range from “1” 
(poor) to “6” (dry) and must be included on the ATIS 
when the reportable condition is less than 6 in any one 
or more of the three runway zones (touchdown, 
midpoint, rollout). 

RUNWAY CONDITION READING

 Numerical 

decelerometer readings relayed by air traffic 
controllers at USAF and certain civil bases for use by 
the pilot in determining runway braking action. 
These readings are routinely relayed only to USAF 
and Air National Guard Aircraft. 

(See BRAKING ACTION.) 

RUNWAY CONDITION REPORT (RwyCR)

 A 

data collection worksheet used by airport operators 
that correlates the runway percentage of coverage 
along with the depth and type of contaminant for the 
purpose of creating a FICON NOTAM. 

(See RUNWAY CONDITION CODES.) 

RUNWAY END IDENTIFIER LIGHTS (REIL)

 

(See AIRPORT LIGHTING.) 

RUNWAY ENTRANCE LIGHTS (REL)

An array 

of red lights which include the first light at the hold 
line followed by a series of evenly spaced lights to the 
runway edge aligned with the taxiway centerline, and 

one additional light at the runway centerline in line 
with the last two lights before the runway edge. 

RUNWAY GRADIENT

 The average slope, mea­

sured in percent, between two ends or points on a 
runway. Runway gradient is depicted on Government 
aerodrome sketches when total runway gradient 
exceeds 0.3%. 

RUNWAY HEADING

 The magnetic direction that 

corresponds with the runway centerline extended, not 
the painted runway number. When cleared to “fly or 
maintain runway heading,” pilots are expected to fly 
or maintain the heading that corresponds with the 
extended centerline of the departure runway. Drift 
correction shall not be applied; e.g., Runway 4, actual 
magnetic heading of the runway centerline 044, fly 
044. 

RUNWAY IN USE/ACTIVE RUNWAY/DUTY 
RUNWAY

 Any runway or runways currently being 

used for takeoff or landing. When multiple runways 
are used, they are all considered active runways. In 
the metering sense, a selectable adapted item which 
specifies the landing runway configuration or 
direction of traffic flow. The adapted optimum flight 
plan from each transition fix to the vertex is 
determined by the runway configuration for arrival 
metering processing purposes. 

RUNWAY LIGHTS

 

(See AIRPORT LIGHTING.) 

RUNWAY MARKINGS

 

(See AIRPORT MARKING AIDS.) 

RUNWAY OVERRUN

 In military aviation exclu­

sively, a stabilized or paved area beyond the end of a 
runway, of the same width as the runway plus 
shoulders, centered on the extended runway 
centerline. 

RUNWAY PROFILE DESCENT

 An instrument 

flight rules (IFR) air traffic control arrival procedure 
to a runway published for pilot use in graphic and/or 
textual form and may be associated with a STAR. 
Runway Profile Descents provide routing and may 
depict crossing altitudes, speed restrictions, and 
headings to be flown from the en route structure to the 
point where the pilot will receive clearance for and 
execute an instrument approach procedure. A 
Runway Profile Descent may apply to more than one 
runway if so stated on the chart. 

(Refer to AIM.) 

RUNWAY SAFETY AREA

 A defined surface 

surrounding the runway prepared, or suitable, for 

PCG R