Prior to towing into a hangar equipped with corrosive fire retardant foam systems, ensure which items are installed?

• A. Engine inlet covers and exhaust plugs
• B. Nose gear locks
• C. Chocks and tie-downs
• D. Flight crewmember badges

Answer: (A)

Sealing the engine against the corrosive foam and debris is the priority when towing into a hangar with those systems. Installing engine inlet covers and exhaust plugs protects the engine by blocking foam, moisture, and foreign objects from entering the intake and exhaust paths. This prevents potential damage to turbines and compressors and avoids complicated cleanup after towing, ensuring the engine can be started safely later.

Nose gear locks don’t address foam exposure to the engine, and chocks and tie-downs are about preventing movement rather than protecting the engine from corrosive material. Flight crewmember badges aren’t relevant to this pre-tow protection.