SAMPLE: ------- Topic: 11A.03.5, Airframe Structures - Aeroplanes - Nacelles/Pylons (ATA 54). Question Number. 1. Jet engines are usually mounted by. Option A. aluminium castings. Option B. forged mounts and bolted to aircraft forged structure. Option C. welded steel tubing. Correct Answer is. forged mounts and bolted to aircraft forged structure. Question Number. 2. A pylon structural member supports the. Option A. centre section. Option B. engine. Option C. empennage. Correct Answer is. engine. Question Number. 3. Wing mounted podded engines and integral fuel tanks. Option A. provide wing bending relief. Option B. provide increased safety if the undercarriage collapses on landing. Option C. reduce tailplane download. Correct Answer is. provide wing bending relief.