21/02/2007ADP/JMC Code C Airport Survey Task Force STSC 21, Johannesburg February, 2007

21/02/2007ADP/JMC Background information Question risen at IIWG 53 meeting in Sydney in January 2007, at Boeing request, in the context of the future replacement of current code C aircraft families : Airbus 320 and Boeing 737. Several trends identified so far Next generation aircraft should be > 15% more efficient than current ones, through more efficient high by-pass engines, lighter composite structure and improved aerodynamics They may split into 2 families, one in the seats range, the other around seats (Two aisles ?) The small size family should have more range (> NM ?), These trends all suggest that current wingspan (34m, even 36m for some B 737) may need some increase.

21/02/2007ADP/JMC Principle of the Survey Before starting any discussion on this issues, the need of a survey of airport acceptance of larger code C aircraft has been fully recognised The proposal is for a survey conducted by a task force manned by a few airport representatives coordinated by ACI STSC, and the concerned manufacturers (Airbus, Boeing, possibly Bombardier) Contrary to the NLA surveys undertaken in ahead of introduction of code F, which covered around 30 large airports, the number of concerned airports will be extremely high and the range in size very wide The survey therefore should consist of some background information and an easily understandable questionnaire We believe that runway and taxiway limitations will be very rare, and the survey may focus on apron issues. Two scenarios may be considered in the survey : –1. New code C aircraft at the current upper limit of code C (36m) –2. The current limit of code C being slightly risen, say to 38m

21/02/2007ADP/JMC Proposed questions Is your runway system (or part of it) strictly designed for code C aircraft ? If so, what impact would have a wingspan increase up to 38m ? (Taxiway separation, lateral clearance) Is your apron or part of your apron (taxilane + stand) strictly designed for current 34m wingspan or 36m code C limit aircraft ? If so, what impact would have 36m wingspan ? 38m wingspan ? (Reconfiguration of stands, reduction of wingtip clearance, length limitation, loss of capacity) Are your code C stands strictly designed for current aircraft (MD80, A320, B737) or to code C 36m current limit ? What impact would have generalisation of 36m wingspan ? 38m wingspan ? (Reconfiguration of stands, reduction of wingtip clearance, loss of capacity)

21/02/2007ADP/JMC Thank you for your questions, comments and contribution