Question

The service ceiling of transport aircraft is the altitude

• A. that is half way between sea-level and absolute ceiling
• B. at which it can cruise with one engine operational
• C. at which its rate of climb is maximum
• D. at which its rate of climb is 0.508 m/s

Hint:

Absolute ceiling is where rate of climb is zero, service ceiling is practical operational limit.

Answer 1

The Correct Option is D

The service ceiling is the altitude at which the aircraft's maximum climb rate reduces to 100 ft/min or 0.508 m/s, beyond which climbing becomes inefficient.