What are the two methods used to remove an aircraft turbine engine?

• A. Lowering the engine from its mounting location using a sling and hoist arrangement to lower into a transportation dolly.
• B. Lowering the engine from its mounting location using a hydraulically operated installation stand only.
• C. Using a forklift under the engine while it remains mounted.
• D. Disassembling on the aircraft without removing the engine.

Answer: (B)

Removing a turbine engine safely hinges on controlled, well-supported lowering from the mounting location. A hydraulically operated installation stand provides that control and support: it fits under the engine and uses hydraulic power to raise or lower the unit smoothly, keeping the engine aligned with its mounting points and with any transport cradle or dolly. This setup minimizes the chance of impact or misalignment during separation, allows precise height adjustment, and reduces the need for complex rigging. Other methods either require more rigging and careful balancing (which adds risk and setup time), or fail to provide proper support and alignment during the critical lowering step. Disassembling on the aircraft without removing the engine obviously does not accomplish engine removal.