Commercial Pilot Airplane (CAX) General Practice Exam

The correct answer indicates that the height of the terrain at the obstruction located 1 nautical mile northwest of Robbins is 26 feet. In aviation, when assessing obstructions, it’s crucial to refer to reliable sources like obstacle database charts or visual flight rules (VFR) sectional charts, which provide detailed information about terrain and obstruction heights.

A height of 26 feet suggests that this specific obstruction is identified based on surveys or measurements that account for ground elevation at that location. Knowing the precise height of terrain obstacles is essential for pilots to ensure safe clearance during flight operations. This information helps in flight planning, approach, and departure procedures, considerably impacting safety and navigation efficiency.

The other height options provided do not accurately reflect the specific data connected to this particular obstruction, underscoring the importance of referring to up-to-date charts reflecting current terrain and obstacle information for operational integrity.