AMC E 690 Engine bleed

For reducing test complexity, and for improved flexibility needed to attain the key parameters (speed, temperature and torque) during the 2-hour test of CS-E 740(c)(3)(iii), maximum air bleed for Engine and aircraft services need not be used if the applicant can show by test or analysis based on test that the Engine's ability to meet the strip examination specifications of CS-E 740(h)(2) is not enhanced. The analysis should include The effect of the bleed air extraction to the Engine secondary air system which provides cooling air to various Engine components, The thermodynamic cycle effects of bleed (e.g., gas generator speed to output shaft speed changes).

[Amdt. No.: E/1]