Common use of Climb Clause in Contracts

Climb. The Aircraft climbs from 1,500 feet above the departure airport altitude to 10,000 feet altitude at the recommended speed of 250 KCAS. The Aircraft then accelerates at a rate of climb of 500 feet per minute to the recommended climb speed for minimum block fuel. The climb continues at the recommended climb speed for minimum block fuel until 0.85 Mach number is reached. The climb continues at 0.85 Mach number to the initial cruise altitude. The temperature is ISA+10°C during climb. Maximum climb thrust is used during climb. Cruise: The Aircraft cruises at 0.85 Mach number. The initial cruise altitude is at least 32,000 feet. GUN-PA-04455-LA-1600117 Performance Guarantees LA Page 12 BOEING PROPRIETARY A step climb or multiple step climbs of 2,000 feet altitude may be used when beneficial to minimize fuel burn. The final cruise altitude shall not exceed 40,000 feet. The temperature is ISA+10°C during cruise. The cruise thrust is not to exceed maximum cruise thrust except during a step climb when maximum climb thrust may be used.

Climb. The Aircraft climbs from 1,500 feet above the departure airport altitude to 10,000 feet altitude at the recommended speed of 250 KCAS. The Aircraft then accelerates at a rate of climb of 500 feet per minute to the recommended climb speed for minimum block fuel. The climb continues at the recommended climb speed for minimum block fuel until 0.85 Mach number is reached. The climb continues at 0.85 Mach number to the initial cruise altitude. The temperature is ISA+10°C during climb. Maximum climb thrust is used during climb. Cruise: The Aircraft cruises at 0.85 Mach numberthe Long Range Cruise (LRC) speed. The initial cruise altitude is at least 32,000 37,000 feet. GUN-PA-04455-LA-1600117 Performance Guarantees LA Page 12 BOEING PROPRIETARY A step climb or multiple step climbs of 2,000 feet altitude may be used when beneficial to minimize fuel burn. The final cruise altitude shall not exceed 40,000 feet. The temperature is ISA+10°C during cruise. The cruise thrust is not to exceed maximum cruise thrust except during a step climb when maximum climb thrust may be used.

Climb. The Aircraft climbs from 1,500 feet above the departure airport altitude to 10,000 feet altitude at the recommended speed of 250 KCAS. GUN-PA-04455-LA-1600117 BOEING PROPRIETARY The Aircraft then accelerates at a rate of climb of 500 feet per minute to the recommended climb speed for minimum block fuel. The climb continues at the recommended climb speed for minimum block fuel until 0.85 Mach number is reached. The climb continues at 0.85 Mach number to the initial cruise altitude. The temperature is ISA+10°C during climb. Maximum climb thrust is used during climb. Cruise: The Aircraft cruises at 0.85 Mach number. The initial cruise altitude is at least 32,000 feet. GUN-PA-04455-LA-1600117 Performance Guarantees LA Page 12 BOEING PROPRIETARY A step climb or multiple step climbs of 2,000 feet altitude may be used when beneficial to minimize fuel burn. The final cruise altitude shall not exceed 40,000 feet. The temperature is ISA+10°C during cruise. The cruise thrust is not to exceed maximum cruise thrust except during a step climb when maximum climb thrust may be used.

Climb. The Aircraft climbs from 1,500 feet above the departure airport altitude to 10,000 feet altitude at the recommended speed of 250 KCAS. The Aircraft then accelerates at a rate of climb of 500 feet per minute to the recommended climb speed for minimum block fuel. The climb continues at the recommended climb speed for minimum block fuel until 0.85 0.79 Mach number is reached. The climb continues at 0.85 0.79 Mach number to the initial cruise altitude. The temperature is ISA+10°C standard day during climb. Maximum climb thrust is used during climb. Cruise: The Aircraft cruises at 0.85 Mach numberthe Long Range Cruise (LRC) speed. The initial cruise altitude is at least 32,000 35,000 feet. GUN-PA-04455-LA-1600117 Performance Guarantees LA Page 12 BOEING PROPRIETARY A step climb or multiple step climbs of 2,000 feet altitude may be used when beneficial to minimize fuel burn. The final cruise altitude shall not exceed 40,000 feet. The temperature is ISA+10°C standard day during cruise. The cruise thrust is not to exceed maximum cruise thrust except during a step climb when maximum climb thrust may be used.

Climb. The Aircraft climbs from 1,500 feet above the departure airport altitude to 10,000 feet altitude at the recommended speed of 250 KCAS. The Aircraft then accelerates at a rate of climb of 500 feet per minute to the recommended climb speed for minimum block fuel. The climb continues at the recommended climb speed for minimum block fuel until 0.85 Mach number is reached. The climb continues at 0.85 Mach number to the initial cruise altitude. The temperature is ISA+10°C during climb. Maximum climb thrust is used during climb. Cruise: The Aircraft cruises at 0.85 Mach numberthe Long Range Cruise (LRC) speed. The initial cruise altitude is at least 32,000 39,000 feet. GUN-PA-04455-LA-1600117 Performance Guarantees LA Page 12 BOEING PROPRIETARY A step climb or multiple step climbs of 2,000 feet altitude may be used when beneficial to minimize fuel burn. The final cruise altitude shall not exceed 40,000 feet. The temperature is ISA+10°C during cruise. The cruise thrust is not to exceed maximum cruise thrust except during a step climb when maximum climb thrust may be used.

Climb. The Aircraft climbs from 1,500 feet above the departure airport altitude to 10,000 feet altitude at the recommended speed of 250 KCAS. The Aircraft then accelerates at a rate of climb of 500 feet per minute to the recommended climb speed for minimum block fuel. The climb continues at the recommended climb speed for minimum block fuel until 0.85 Mach number is reached. The climb continues at 0.85 Mach number to the initial cruise altitude. The temperature is ISA+10°C during climb. Maximum climb thrust is used during climb. Cruise: The Aircraft cruises at 0.85 Mach number. The initial cruise altitude is at least 32,000 33,000 feet. GUN-PA-04455-LA-1600117 Performance Guarantees LA Page 12 BOEING PROPRIETARY A step climb or multiple step climbs of 2,000 feet altitude may be used when beneficial to minimize fuel burn. The final cruise altitude shall not exceed 40,000 feet. The temperature is ISA+10°C during cruise. The cruise thrust is not to exceed maximum cruise thrust except during a step climb when maximum climb thrust may be used.

Climb. The Aircraft climbs from 1,500 feet above the departure airport altitude to 10,000 feet altitude at the recommended speed of 250 KCAS. The Aircraft then accelerates at a rate of climb of 500 feet per minute to the recommended climb speed for minimum block fuel. The climb continues at the recommended climb speed for minimum block fuel until 0.85 Mach number is reached. The climb continues at 0.85 Mach number to the initial cruise altitude. The temperature is ISA+10°C during climb. Maximum climb thrust is used during climb. Cruise: The Aircraft cruises at 0.85 Mach numberthe Long Range Cruise (LRC) speed. The initial cruise altitude is at least 32,000 36,000 feet. GUN-PA-04455-LA-1600117 Performance Guarantees LA Page 12 BOEING PROPRIETARY A step climb or multiple step climbs of 2,000 feet altitude may be used when beneficial to minimize fuel burn. The final cruise altitude shall not exceed 40,000 feet. The temperature is ISA+10°C during cruise. The cruise thrust is not to exceed maximum cruise thrust except during a step climb when maximum climb thrust may be used.

Climb. The Aircraft climbs from 1,500 feet above the departure airport altitude to 10,000 feet altitude at the recommended speed of 250 KCAS. The Aircraft then accelerates at a rate of climb of 500 feet per minute to the recommended climb speed for minimum block fuel. The climb continues at the recommended climb speed for minimum block fuel until 0.85 Mach number is reached. The climb continues at 0.85 Mach number to the initial cruise altitude. The temperature is ISA+10°C during climb. Maximum climb thrust is used during climb. Cruise: The Aircraft cruises at 0.85 Mach numberthe Long Range Cruise (LRC) speed. The initial cruise altitude is at least 32,000 36,000 feet. GUN-PA-04455-LA-1600117 Performance Guarantees LA Page 12 BOEING PROPRIETARY A step climb or multiple step climbs of 2,000 feet with a final step climb of 3,000 feet altitude may be used when beneficial to minimize fuel burn. The final cruise altitude shall not exceed 40,000 feet. The temperature is ISA+10°C during cruise. The cruise thrust is not to exceed maximum cruise thrust except during a step climb when maximum climb thrust may be used.

Climb. The Aircraft climbs from 1,500 feet above the departure airport altitude to 10,000 feet altitude at the recommended speed of 250 KCAS. The Aircraft then accelerates at a rate of climb of 500 feet per minute to the recommended climb speed for minimum block fuel. The climb continues at the recommended climb speed for minimum block fuel until 0.85 0.79 Mach number is reached. The climb continues at 0.85 0.79 Mach number to the initial cruise altitude. The temperature is ISA+10°C standard day during climb. Maximum climb thrust is used during climb. Cruise: The Aircraft cruises at 0.85 Mach numberthe Long Range Cruise (LRC) speed. The initial cruise altitude is at least 32,000 36,000 feet. GUN-PA-04455-LA-1600117 Performance Guarantees LA Page 12 BOEING PROPRIETARY A step climb or multiple step climbs of 2,000 feet altitude may be used when beneficial to minimize fuel burn. The final cruise altitude shall not exceed 40,000 feet. The temperature is ISA+10°C standard day during cruise. CEA-PA-4076-LA-1302574 BOEING PROPRIETARY Attachment to Letter Agreement No. LA-1302574 LEAP-1B28 Engines The cruise thrust is not to exceed maximum cruise thrust except during a step climb when maximum climb thrust may be used.

Climb. The Aircraft climbs from 1,500 feet above the departure airport altitude to 10,000 feet altitude at the recommended speed of 250 KCAS. The Aircraft then accelerates at a rate of climb of 500 feet per minute to the recommended climb speed for minimum block fuel. The climb continues at the recommended climb speed for minimum block fuel until 0.85 0.78 Mach number is reached. The climb continues at 0.85 0.78 Mach number to the initial cruise altitude. The temperature is ISA+10°C standard day during climb. Maximum climb thrust is used during climb. Cruise: The Aircraft cruises at 0.85 Mach numberthe Long Range Cruise (LRC) speed. The initial cruise altitude is at least 32,000 34,000 feet. GUN-PA-04455-LA-1600117 Performance Guarantees LA Page 12 BOEING PROPRIETARY A step climb or multiple step climbs of 2,000 feet altitude may be used when beneficial to minimize fuel burn. The final cruise altitude shall not exceed 40,000 feet. The temperature is ISA+10°C standard day during cruise. The cruise thrust is not to exceed maximum cruise thrust except during a step climb when maximum climb thrust may be used.