1. File reference: Author/Dept: Stéphan Dubourg - LPAV Creation date: Aug 07th, 2008 Classification : D3 Keeping: Page : ‹#› / New Developments - Bombardier CRJ700 / 900

2. File reference: Author/Dept: Stéphan Dubourg - LPAV Creation date: Aug 07th, 2008 Classification : D3 Keeping: Page : ‹#› / Introduction Bombardier approved only one tire supplier Bombardier approved only one tire supplier Bombardier does not support nor is against STC approval process on their aircraft. Bombardier does not support nor is against STC approval process on their aircraft. Michelin decided to obtain FAA approval through the STC process Michelin decided to obtain FAA approval through the STC process While supporting radial tires and without Bombardier support, Michelin proposes a bias tire in order to obtain STC approval by similarity with current bias tires While supporting radial tires and without Bombardier support, Michelin proposes a bias tire in order to obtain STC approval by similarity with current bias tires

3. File reference: Author/Dept: Stéphan Dubourg - LPAV Creation date: Aug 07th, 2008 Classification : D3 Keeping: Page : ‹#› / Michelin Proposal Features NBT bias technology for improving landings per tread, reducing maintenance cost and obtaining even tread wear profile NBT bias technology for improving landings per tread, reducing maintenance cost and obtaining even tread wear profile Same operational conditions than current tires Same operational conditions than current tires Michelin tires are mixable with current tires Michelin tires are mixable with current tires

4. File reference: Author/Dept: Stéphan Dubourg - LPAV Creation date: Aug 07th, 2008 Classification : D3 Keeping: Page : ‹#› / Bombardier CRJ700/900 Tire Data Tire Size PNSkid Avg Weight New (kg/lb) New (kg/lb)Technology 20.5x6.75-10/12/225036-897-00.27”9.0 / 19.0Bias H36x12.0-18/18/225029-901-0 0.42”39.0 / 85.0Bias NBT Ref : Same size, ply rating, speed rating as current tire Current MLG tire skid : 0.39”

5. File reference: Author/Dept: Stéphan Dubourg - LPAV Creation date: Aug 07th, 2008 Classification : D3 Keeping: Page : ‹#› / Timeline STC approval by FAA : End 08 STC approval by FAA : End 08 Delivery & ramp up to Skywest : Delivery & ramp up to Skywest : January to June 09 January to June 09 Extension to other US airlines early 2010 Extension to other US airlines early 2010

6. File reference: Author/Dept: Stéphan Dubourg - LPAV Creation date: Aug 07th, 2008 Classification : D3 Keeping: Page : ‹#› / Thank you