operational surface friction assessment
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OPERATIONAL SURFACE FRICTION ASSESSMENT -------------------- AIRPORT OPERATOR SURVEY Foreword The STAC (Civil Aviation Technical Center) of the DGAC (French Civil Aviation Administration) is notably responsible for contributing to the development of technical regulations and dissemination of standards in France. The STAC has launched a study dealing with operational surface friction assessment in bad weather conditions. Indeed, there is no international regulation for operational runway friction characteristics measurements and for information disseminated as a result of these assessments. The answers given in this survey will be analyzed with all the responses received. They will be individually considered and remain confidential. This survey deals with operational runway surface conditions when contaminants such as water, ice, snow or slush are present. -The file of this survey can be downloaded at this web address : http://www.stac.aviation-civile.gouv.fr/chaussee/ADHERENCE_EXPLOIT_EN.doc Airport description Country / Airport’s name : ............................................................................................................................ Length of the longest runway : ..................................................................................................................... Contact coordinates Last name : .................................................................................................................................................... First name : ................................................................................................................................................... Duties : .......................................................................................................................................................... Phone number : ............................................................................................................................................. Email : .......................................................................................................................................................... Thank you for transmitting by fax or electronic mail this document to : Yannick Laurençon Phone number : +33 (0)1 49 56 81 50 Fax : +33 (0)1 49 56 82 64 Email : yannick.laurencon@aviation-civile.gouv.fr Benjamin Smagghe Phone number : +33 (0)1 49 56 82 42 Fax : +33 (0)1 49 56 82 64 Email : benjamin.smagghe@aviation-civile.gouv.fr STAC/IA/GER-AdhéOpéra/09-133 Service Technique Aviation Civile / Infrastructures Aéroportuaires 31 avenue du Maréchal Leclerc 94 381 BONNEUIL SUR MARNE CEDEX FRANCE 1/9 1- Do you own a device to measure contaminant DEPTH ? yes no QUESTION 1: if YES What kind of measurement is it? manual measurement (dipstick) automated measurement (describe device and used process) ............................................................................................................................................................ Is the device regularly controled concerning the measurement accuracy ? yes (precise briefly frequency, protocol, control organization) ............................................................................................................................................................ ............................................................................................................................................................ no What are the contaminants measured with your device ? water snow slush other (precise) ............................................................................................................................................................ Precise the process performed in order to measure contaminant depth: WATER - Number of measurements for each third of the runway: .................................................................. - Location (distance) of measures in relation to runway centre line:.................................................. - Time to perform this process:........................................................................................................... SNOW - Number of measurements for each third of the runway: .................................................................. - Location (distance) of measures in relation to runway centre line:.................................................. - Time to perform this process:........................................................................................................... SLUSH - Number of measurements for each third of the runway: .................................................................. - Location (distance) of measures in relation to runway centre line:.................................................. - Time to perform this process:........................................................................................................... Comments (specific test area? meteorological station?...): ............................................................... ............................................................................................................................................................ Do you systematically use this device as soon as the runway is contaminated (with WATER, SNOW…)? yes no (precise the factors that initiate the implementation) ............................................................................................................................................................ ............................................................................................................................................................ ............................................................................................................................................................ Did the shift attend a training session for using this equipment? yes (precise the training officer, training organism,..) ............................................................................................................................................................ ............................................................................................................................................................ no Service Technique Aviation Civile / Infrastructures Aéroportuaires 31 avenue du Maréchal Leclerc 94 381 BONNEUIL SUR MARNE CEDEX FRANCE 2/9 QUESTION 1 : if YES (following) Do you consider the documentation of the manufacturer sufficiently explicit and understandable to achieve a reliable and optimal use of equipment? yes no (precise) ............................................................................................................................................................ ............................................................................................................................................................ QUESTION 1 : if NO Do you plan to buy such a specific material and when? yes (precise material and term ) ............................................................................................................................................................ ............................................................................................................................................................ no 2- Do you implement a process in order to assess the type of contaminant (dry snow, wet snow…)? yes no QUESTION 2: if YES What kind of assessment is it? Manual (visual and touch sense) By other method (please precise) ............................................................................................................................................................ ............................................................................................................................................................ ............................................................................................................................................................ ............................................................................................................................................................ QUESTION 2: if NO Do you plan to perform such a process and when? yes (please precise term and type of process) ............................................................................................................................................................ ............................................................................................................................................................ no Service Technique Aviation Civile / Infrastructures Aéroportuaires 31 avenue du Maréchal Leclerc 94 381 BONNEUIL SUR MARNE CEDEX FRANCE 3/9 3- Do you own a device to assess runway surface friction (measured coefficient or estimated surface friction)? yes no QUESTION 3: if YES Type of device ............................................................................................................................................................ ............................................................................................................................................................ ............................................................................................................................................................ Is the device regularly checked for the accuracy of measurements? yes (precise briefly frequency, protocol, control organization) ............................................................................................................................................................ ............................................................................................................................................................ no Do you assess surface friction characteristics when the runway is contaminated with water? yes no possibly (please precise) ............................................................................................................................................................ ............................................................................................................................................................ Contamination with WATER How long does it take to assess surface friction characteristics on the longest runway? - Number of measurements (if discontinuous measurements):........................................................... - Time to perform the assessment: ...................................................................................................... - Device used: ..................................................................................................................................... - Speed of the device (if continuous measurement):........................................................................... Contamination with SNOW or ICE How long does it take to assess surface friction characteristics on the longest runway? - Number of measurements (if discontinuous measurements):........................................................... - Time to perform the assessment: ...................................................................................................... - Device used: ..................................................................................................................................... - Speed measurement (if continuous measurement): .......................................................................... Do you systematically use this device as soon as the runway is contaminated (with WATER, SNOW…)? yes no (please precise the factors initiating the implementation) ............................................................................................................................................................ ............................................................................................................................................................ ............................................................................................................................................................ Service Technique Aviation Civile / Infrastructures Aéroportuaires 31 avenue du Maréchal Leclerc 94 381 BONNEUIL SUR MARNE CEDEX FRANCE 4/9 QUESTION 3: if YES (following) After measurements, what is the format used to disseminate information on the surface conditions? Numerical coefficient (0, xx) Estimated surface friction (good-5… unreliable-9) Comments: .......................................................................................................................................... ............................................................................................................................................................ ............................................................................................................................................................ Does the shift in charge of operating devices follow a specific training for using this equipment? yes (please precise the training officer, training organism,..) ............................................................................................................................................................ ............................................................................................................................................................ no Do you consider the documentation of the manufacturer sufficiently explicit and understandable to achieve a reliable and optimal use of equipment? yes no (please precise) ............................................................................................................................................................ ............................................................................................................................................................ QUESTION 3: if NO Do you plan to buy a specific material and when? yes (please precise term and type of device) ............................................................................................................................................................ ............................................................................................................................................................ no 4- Who is in charge to take the decision to assess runway surface conditions (type and/or depth of contaminant, friction…)? Airport operator ATC Others (please precise): ................................................................................................................... Comments: ............................................................................................................................................ ............................................................................................................................................................... ............................................................................................................................................................... 5 – What are the weather conditions that lead to a new assessment of the runway surface conditions? (dew point? temperature evolution?...) ................................................................................................................................................. ................................................................................................................................................. ................................................................................................................................................. ................................................................................................................................................. Service Technique Aviation Civile / Infrastructures Aéroportuaires 31 avenue du Maréchal Leclerc 94 381 BONNEUIL SUR MARNE CEDEX FRANCE 5/9 6 – Does the frequency of runway surface conditions assessment change according to type/depth of contaminant, weather conditions (or other criteria)? ................................................................................................................................................. ................................................................................................................................................. ................................................................................................................................................. ................................................................................................................................................. ................................................................................................................................................. 7 – Do you perform a friction assessment after de-icing or snow clearing? yes (please precise type of assessment) ........................................................................................... ............................................................................................................................................................... no possibly ( please precise) : ................................................................................................................ ............................................................................................................................................................... ............................................................................................................................................................... Service Technique Aviation Civile / Infrastructures Aéroportuaires 31 avenue du Maréchal Leclerc 94 381 BONNEUIL SUR MARNE CEDEX FRANCE 6/9 ADDITIONAL QUESTIONS NOT RELATING TO THE THEME « OPERATIONAL SURFACE FRICTION ASSESSMENT » 8- In case of contamination with snow or ice, do you use an indicator to decide to perform snow clearing or de-icing equipment? yes no QUESTION 6: if YES Precise the indicator: Contaminant depth Type of contaminant Friction coefficient Other (please precise): ..................................................................................................................... Comments: ............................................................................................................................................ ............................................................................................................................................................... ............................................................................................................................................................... 9- What kind of equipment and/or chemical treatment do you use when there is snow contamination? ............................................................................................................................................................... ............................................................................................................................................................... ............................................................................................................................................................... ............................................................................................................................................................... ............................................................................................................................................................... ............................................................................................................................................................... ............................................................................................................................................................... ............................................................................................................................................................... ............................................................................................................................................................... 10- What kind of equipment and/or chemical treatment do you use when there is ice contamination? ............................................................................................................................................................... ............................................................................................................................................................... ............................................................................................................................................................... ............................................................................................................................................................... ............................................................................................................................................................... ............................................................................................................................................................... ............................................................................................................................................................... ............................................................................................................................................................... Service Technique Aviation Civile / Infrastructures Aéroportuaires 31 avenue du Maréchal Leclerc 94 381 BONNEUIL SUR MARNE CEDEX FRANCE 7/9 11- Have you a particular procedure when it’s snowing (« snow plan » document)? yes no 12- Do you organize a meeting to clarify and refine the management of human and technical resources before a predictable weather event? yes (please specify briefly approached topics) ............................................................................................................................................................... ............................................................................................................................................................... ............................................................................................................................................................... ............................................................................................................................................................... ............................................................................................................................................................... ............................................................................................................................................................... no 13- Do you have a debriefing with the various managers after a meteorological event that led to a contaminated runway surface? yes (please precise) : ........................................................................................................................ ............................................................................................................................................................... ............................................................................................................................................................... ............................................................................................................................................................... ............................................................................................................................................................... no 14- Have you been informed of any problem (corrosion…) with de-icers? yes (please precise) : ........................................................................................................................ ............................................................................................................................................................... ............................................................................................................................................................... ............................................................................................................................................................... no no chemical treatment 15- What are the applicable solutions employed in order to treat water with de-icers? ............................................................................................................................................................... ............................................................................................................................................................... ............................................................................................................................................................... ............................................................................................................................................................... ............................................................................................................................................................... ............................................................................................................................................................... ............................................................................................................................................................... Service Technique Aviation Civile / Infrastructures Aéroportuaires 31 avenue du Maréchal Leclerc 94 381 BONNEUIL SUR MARNE CEDEX FRANCE 8/9 Comments and suggestions about this present questionnaire and about the subject of operational runway surface conditions: ..................................................................................... ...................................................................................................................................................................... ...................................................................................................................................................................... ...................................................................................................................................................................... ...................................................................................................................................................................... ...................................................................................................................................................................... ...................................................................................................................................................................... ...................................................................................................................................................................... ...................................................................................................................................................................... ...................................................................................................................................................................... ...................................................................................................................................................................... ...................................................................................................................................................................... ...................................................................................................................................................................... ...................................................................................................................................................................... ...................................................................................................................................................................... ...................................................................................................................................................................... ...................................................................................................................................................................... ...................................................................................................................................................................... ...................................................................................................................................................................... ...................................................................................................................................................................... Service Technique Aviation Civile / Infrastructures Aéroportuaires 31 avenue du Maréchal Leclerc 94 381 BONNEUIL SUR MARNE CEDEX FRANCE 9/9
