FAA AMT Airframe Practice Exam 2026 – Complete Exam Prep Guide

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Where is fuselage station No. 137 located on an aircraft?

137 inches forward of the aft reference line

At the 137th structural frame of the fuselage

137 inches aft of the zero or fixed reference line

Fuselage station No. 137 is located 137 inches aft of the zero or fixed reference line. This reference line is typically located at the nose of the aircraft and is used as a point of measurement for various components of an aircraft. Option A and B are incorrect because they refer to measurements forward of the aft reference line and structural frame, respectively. Option D is incorrect because the location opposite the main cabin door may vary depending on the aircraft and is not a consistent point of reference.

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Directly opposite the main cabin door

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