2.2 Runway surface condition assessment and reporting

1. Aerodrome operators are responsible for assessing and reporting the runway surface condition.

2. Aerodrome operators shall conduct a runway surface condition assessment and reporting when the following significant changes in runway surface condition occur due to water, snow, slush, ice or frost.

   1. any change in the RWYCC;

   2. any change in contaminant type;

   3. any change in reportable contaminant coverage;

   4. any change in contaminant depth; and

   5. any other information are known to be significant.

3. Aerodrome operators shall report a runway condition report(RCR) including runway condition code(RWYCC), runway surface description, percentage of coverage for contaminants and depth of contaminants for each runway third to air traffic control services and aeronautical information services authorities using runway condition assessment matrix(RCAM).

   < Percentage of coverage for contaminants >

   Assessed percent(%)	Reported percent(%)
   10 - 25	25
   26 - 50	50
   51 - 75	75
   76 - 100	100

4. Aerodrome operators could determine to upgrade or downgrade runway condition code(RWYCC) using all pertinent information available.

5. GRF(Global reporting format for assessing and reporting runway surface condition) is applicable to the following aerodromes.

   • INCHEON(RKSI)

   • GIMPO(RKSS)

   • JEJU(RKPC)

   • YANGYANG(RKNY)

   • MUAN(RKJB)

   • YEOSU(RKJY)

   • ULSAN(RKPU)

Runway condition assessment matrix(RCAM)
Assessment criteria		Downgrade assessment criteria
RWYCC	Runway surface description	Aeroplane deceleration or directional control observation	Pilot report of runway braking action
6	- DRY	-	-
5	- FROST - WET(The runway surface is covered by any visible dampness or water up to and including 3 mm depth) Up to and including 3 mm depth; - SLUSH - DRY SNOW - WET SNOW	Braking deceleration is normal for the wheel braking effort applied AND directional control is normal.	GOOD
4	-15°C and Lower outside air temperature1; - COMPACTED SNOW	Braking deceleration OR directional control is between Good and Medium.	GOOD TO MEDIUM
3	- WET(“Slippery wet” runway) - DRY SNOW or WET SNOW(Any depth) - ON TOP OF COMPACTED SNOW More than 3 mm depth; - DRY SNOW - WET SNOW Higher than -15ºC outside air temperature1; - COMPACTED SNOW	Braking deceleration is noticeably reduced for the wheel braking effort applied OR directional control is noticeably reduced.	MEDIUM
2	More than 3 mm depth of water or slush; - STANDING WATER - SLUSH	Braking deceleration OR directional control is between Medium and Poor.	MEDIUM TO POOR
1	- ICE	Braking deceleration is significantly reduced for the wheel braking effort applied OR directional control is significantly reduced.	POOR
0	- WET ICE - WATER ON TOP OF COMPACTED SNOW - DRY SNOW or WET SNOW ON TOP OF ICE	Braking deceleration is minimal to non-existent for the wheel braking effort applied OR directional control is uncertain.	LESS THAN POOR

1. Runway surface temperature should preferably be used where available.

2.2.1 Measures for improvement of surface condition

Aerodrome operators could use the equipment such as snow blowers, snow sweepers and snow ploughs to remove water, snow, slush, ice or frost on runway, taxiway and apron. When runway is covered with thin ice, aerodrome operators could remove thin ice with the chemical de-icing methods.

2.2.2 Dissemination of information about runway surface and snow condition

1. Information on runway surface condition will be disseminated through air traffic control services and aeronautical information services authorities at each aerodrome.

2. Information on snow condition at aerodromes will be disseminated through NOTAM(SNOWTAM) that is prepared in accordance with ICAO Annex 15.