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BOEING is a trademark of Boeing Management Company. Copyright © 2008 Boeing. All rights reserved. Michael J. Roginski, P.E. Principal Engineer – Boeing.

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Presentation on theme: "BOEING is a trademark of Boeing Management Company. Copyright © 2008 Boeing. All rights reserved. Michael J. Roginski, P.E. Principal Engineer – Boeing."— Presentation transcript:

1 BOEING is a trademark of Boeing Management Company. Copyright © 2008 Boeing. All rights reserved. Michael J. Roginski, P.E. Principal Engineer – Boeing Airport Technology, Pavement Lead April 21-23, 2012, Atlantic City, New Jersey ICAO Update- High Tire Pressure Revision to Annex 14 FAA Working Group Meeting

2 Work Structure of the ICAO Aerodromes Panel Aerodromes Panel Aerodrome Design Working Group Airport Operations & Services Working Group Visual Aids Working Group Rescue & Fire- fighting Working Group Heliport Design Working Group PSG - Pavement Sub- Group FTF - Friction Task Force Air Navigation Commission Aerodromes Panel Working Group of the Whole (APWGoW)

3 COPYRIGHT © 2008 THE BOEING COMPANY ANC Recommends AN Study Group Divisional MeetingSecretariatANC Panel ANC Secretariat Analysis States ANNEX Proposal for Action PANS 3 Months ANC Approves Adoption Date (Usually March) Secretariat Blue Edition Applicability Date (Amendment becomes effective if not disapproved by majority of States) Blue Edition Applicability Date Council Adopts Technical Proposal Contracting States ANC Final Review 10 Months Approximately Review Phase Origin of Proposal Development Phase Adoption/ Publication Phase 2 weeks Secretariat 4 Months minimum Applicability Date (Usually November ) Direct Submission Validation Green Edition States Notification of Differences PANSANNEX Effective Date years 4 Months ANC Preliminary Review International Organizations Green Edition First series of FAA/Boeing tests in Second series of tests and Airbus tests timeframe Current phase

4 COPYRIGHT © 2008 THE BOEING COMPANY AN Study Group Divisional MeetingSecretariatANC Panel ANC at Proposal for Action (Usually March) (Amendment becomes effective if not disapproved by majority of States) Technical Proposal Origin of Proposal Development Phase (Usually November ) Direct Submission years ANC Preliminary Review First series of FAA/Boeing tests in Second series of tests and Airbus tests timeframe Current phase ● After completion of both the FAA/Boeing and Airbus high tire pressure tests technical reports were written to justify the proposed increase in the ICAO tire pressure categories used in the ACN/PCN system. ● Technical proposal drafted by the Pavement Sub-group (PSG) was presented by the Aerodromes Operations and Services Working Group (AOSWG) to the Aerodrome Panel (AP)- October, ● Aerodrome Panel approves- amendment to Annex 14, Volume 1, Aerodrome Design and Operations is required

5 COPYRIGHT © 2008 THE BOEING COMPANY Conclusions Increase in tire pressure had an insignificant effect on the amount of rutting, with the observed difference between 254 psi and 218 psi being in the range of 0-4%.. Test results indicate that rutting can be significantly reduced by using improved asphalt binders. Rut depth variation increases simultaneously with temperature independent of tire pressure. Both tests results clearly indicate that the tire pressure effect resulting from an increase from 1.5 MPa (218 psi) to 1.75 MPa (254 psi) will not affect adversely surface or base asphalt concrete layers, nor the structural capacity and life duration of typical airfield pavement structures. Page 5

6 COPYRIGHT © 2008 THE BOEING COMPANY Secretariat Analysis 3 Months Contracting States ANC Final Review Review Phase Secretariat Validation ANC Preliminary Review International Organizations Current phase ● Air Navigation Commission issues state letter SL stating proposed changes to Annex 14, Vol 1- May 30, Start of review phase. ● Member states (191 total) and recognized international organizations (~10) are given 3 months to respond- Due date Sept. 15, ● Current status- ICAO Secretariat (Joseph Cheong) is collating and analyzing all responses received from member states and intl organizations. After coordination with various ICAO sections (i.e. Flight Ops, ATC, Aeronautical Information Services, etc) all analyses will be consolidated into a single Air Navigation Working Paper (ANWP). Review Phase May, 2011 SL issued Sept. 15, 2011 Comments received

7 COPYRIGHT © 2008 THE BOEING COMPANY ● Responses received from 62 contracting states and 5 international organizations. ● ICAO must respond to each and every comment. Note: ICAO provisions are minimum provisions, meaning that member states are free to adopt provisions more stringent in the interest of safety, regularity and efficiency. If ICAO were to mirror US requirements then ~ 90% of the world would not be able to comply. ● Most comments received are in favor of revision to higher tire pressure categories. Some exceptions: -Tests did not consider pavement types other than asphalt -Note making reference to potential damage to pavement due to higher tire pressures infers that if accepted as a standard then states will be mandated to implement a maintenance program to ensure safety. -PCN example for all up mass rating in annex 14 based on older Possibly replacing with or A380 is more practical. ● Secretariat opinion is that the revision will be approved. Comments Received

8 COPYRIGHT © 2008 THE BOEING COMPANY ANC Recommends States ANNEX PANS ANC Approves Adoption Date (Usually March) Secretariat Blue Edition Applicability Date (Amendment becomes effective if not disapproved by majority of States) Blue Edition Applicability Date Council Adopts ANC Final Review 10 Months Approximately Adoption/ Publication Phase 2 weeks 4 Months minimum Applicability Date Estimated November, 2013 Green Edition States Notification of Differences PANSANNEX Effective Date 4 Months Green Edition Proposal Adoption Phase ● The ANC will review the ANWP prepared by the ICAO Secretariat-May/June of The ANC is comprised of experts nominated by 19 countries, acting as technical advisors to the ICAO Council. ● Adoption by the ICAO Council follows. Council consists of members nominated by 36 states, simple majority needed to go forward. ● Member states are given 4 months to register disapproval after adoption date. If approved by simple majority of states the proposal becomes ‘effective.’ If disapproved it’s ‘back to the drawing board’ ● Once approved (i.e. ‘effective’) then 4 additional months given before applicability date- estimated to be November, May/June 2012-review of ANWP begins Review by member states

9 COPYRIGHT © 2008 THE BOEING COMPANY Annex 14, Vol 1 Chapter 2, section 2.6 Revision to tire pressure categories Both the ACI airport survey and the full-scale tests demonstrate that the proposed change of tire pressure limitations can be ratified without putting aircraft or airfield pavement at risk. They allow the ICAO tire pressure limit codes to be formally and permanently changed to be more consistent with both the performance of real world pavement and new generation aircraft. Tire Pressure Category Current ICAO Limits MPa (PSI), loaded Proposed New ICAO Limits MPa (PSI), loaded W HighUnlimited X Medium: 1.50 (218)High: 1.75 (254) Y Low: 1.0 (145)Medium: 1.25 (181) Z Very Low:.50 (73)Low:.50 (73)


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