ATP.I.D — High Altitude Aerodynamics (ATP) (AMEL, AMES)

Objective: To determine that the applicant exhibits satisfactory knowledge, risk management, and skills associated with high altitude airplane aerodynamics.

Knowledge

The applicant demonstrates understanding of:

• AA.I.D.K1Aerodynamics of large transport category airplanes to include flight characteristics of swept wing airplanes (e.g., Mach buffet).
• AA.I.D.K2Energy management.
• AA.I.D.K3Relationship between Mach number, indicated airspeed, true airspeed, and change over altitudes.
• AA.I.D.K4Load factor at high altitude and its effect on high and low speed operating margins.
• AA.I.D.K5Relationship between altitude capability, weight, and temperature.
• AA.I.D.K6VMO/MMO convergence and stall angle of attack.
• AA.I.D.K7Maximum Lift over Drag Ratio (L/D Max).
• AA.I.D.K8Best range and best endurance.
• AA.I.D.K9Factors which contribute to airplane upsets at high altitude and upset prevention and recovery techniques.

Risk Management

The applicant demonstrates the ability to identify, assess and mitigate risks, encompassing:

• AA.I.D.R1Failure to manage the airplane’s energy state.
• AA.I.D.R2High operating altitudes at high operational weights.
• AA.I.D.R3High altitude slow-downs and excursions behind the power curve.
• AA.I.D.R4Turbulence at high altitude.

Skills

The applicant demonstrates the ability to:

• AA.I.D.S1If a cruise altitude is reached, manage the airplane’s systems and energy state.