AD 1.2   RESCUE AND FIRE FIGHTING SERVICES AND SNOW PLANRESCUE AND FIRE FIGHTING SERVICES, SNOW PLAN AND RUNWAY SURFACE CONDITION ASSESSMENT AND REPORTING

1   Rescue and fire fighting services

  1. At aerodromes approved for scheduled and/or non-scheduled traffic, Rescue and Fire Fighting Services are established in accordance with the regulation for civil aviation.

  2. Information about whether there is service and what the extent of that service is, is given on the relevant page for each aerodrome.

1.1 At the aerodromes approved for scheduled and/or non-scheduled flights, rescue and fire fighting services are established in accordance with the regulation for civil aviation.
1.2 Information about the availability and scope of rescue and fire fighting services, is given on the relevant page for each aerodrome.

2  

Snow plan

Snow plan, runway surface condition assessment and reporting

Organization of winter service

During the winter period from approximately 1 November to approximately 1 April, winter service is established at the aerodromes.

During the winter period from approximately 1 November to 1 April of the following year, winter service is provided at aerodromes.

2.1 Winter service

During the winter period from approximately 1 November to 1 April of the following year, winter service is provided at aerodromes.

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.

Measuring methods and measurement taken

  1. The runway surface friction measurements will be carried out under the following circumstances:

    1. The wet and slippery runway

    2. The runway are wholly or partially covered with snow and ice.

  2. The friction of runway surface coefficients will be measured continuously with ICAO-recognized Friction-Measuring Devices(Mu-meter, Surface Friction Tester, Skiddometer, etc) at a speed of 65 km/h or 95 km/h along a line on each side of the center line of the runway approximately 3 - 5 m.

Report of Estimated Surface Friction

  1. The table of friction coefficients is as the following table.

    Measured coefficient

    Estimated Surface

    Friction

    Code

    0.40 and above

    Good

    5

    0.39 to 0.36

    Good to Medium

    4

    0.35 to 0.30

    Medium

    3

    0.29 to 0.26

    Medium to Poor

    2

    0.25 or below

    Poor

    1

  2. For the purpose of reporting braking action by ATS, each runway, divided into three section, will be referred to as “First”, “Second”, or “Third” part of a runway as seen in the direction of landing. If the friction coefficient values for any of the runway are reported below 0.4, the estimated braking action will be notified to pilots. The information will also be disseminated by ATS through the ATIS broadcasts and NOTAM.

Measures for improvement of Surface Friction

In order to clear of runway, taxiway and apron, snow blower/sweeper and snow ploughs will be used for removal of snow, ice, slush and standing water. Thin ice covering on runway will be removed by means of chemical de-icing.

Dissemination of information about snow conditions

Information on snow conditions at aerodromes will be disseminated directly from the individual aerodrome in a separate series of NOTAM (SNOWTAM). SNOWTAM will be prepared in accorance with ICAO ANNEX 15.