background image

AIM 

6/17/21 

deteriorating braking conditions and should request 
current runway condition information if not issued by 
controllers. Pilots should also be prepared to provide 
a descriptive runway condition report to controllers 
after landing. 

4

3

9.  Runway Condition Reports 

a. 

Aircraft braking coefficient is dependent upon 

the surface friction between the tires on the aircraft 
wheels and the pavement surface. Less friction means 
less aircraft braking coefficient and less aircraft 
braking response. 

b. 

Runway condition code (RwyCC) values range 

from 1 (poor) to 6 (dry). For frozen contaminants on 
runway surfaces, a runway condition code reading of 
4 indicates the level when braking deceleration or 
directional control is between good and medium. 

NOTE

 

A RwyCC of “0” is used to delineate a braking action 
report of NIL and is prohibited from being reported in a 
FICON NOTAM. 

c. 

Airport management should conduct runway 

condition assessments on wet runways or runways 
covered with compacted snow and/or ice. 

1. 

Numerical readings may be obtained by using 

the Runway Condition Assessment Matrix (RCAM). 
The RCAM provides the airport operator with data to 
complete the report that includes the following: 

(a) 

Runway(s) in use 

(b) 

Time of the assessment 

(c) 

Runway condition codes for each zone 

(touchdown, mid

point, roll

out) 

(d) 

Pilot

reported braking action report (if 

available) 

(e) 

The contaminant (for example, wet snow, 

dry snow, slush, ice, etc.) 

2. 

Assessments for each zone (see 4

3

9c1(c)) 

will be issued in the direction of takeoff and landing 
on the runway, ranging from “1” to “6” to describe 
contaminated surfaces. 

NOTE

 

A RwyCC of “0” is used to delineate a braking action 
report of NIL and is prohibited from being reported in a 
FICON NOTAM. 

3. 

When any 1 or more runway condition codes 

are reported as less than 6, airport management must 
notify ATC for dissemination to pilots. 

4. 

Controllers will not issue runway condition 

codes when all 3 segments of a runway are reporting 
values of 6. 

d. 

When runway condition code reports are 

provided by airport management, the ATC facility 
providing approach control or local airport advisory 
must provide the report to all pilots. 

e. 

Pilots should use runway condition code 

information with other knowledge including aircraft 
performance characteristics, type, and weight, 
previous experience, wind conditions, and aircraft 
tire type (such as bias ply vs. radial constructed) to 
determine runway suitability. 

f. 

The Runway Condition Assessment Matrix 

identifies the descriptive terms “good,” “good to 
medium,” “medium,” “medium to poor,” “poor,” and 
“nil” used in braking action reports. 

REFERENCE

 

Advisory Circular AC 91

79A (Revision 1), Mitigating the Risks of a 

Runway Overrun Upon Landing, Appendix 1 

4

3

14 

Airport Operations