Why must tape stack height be taken into account when selecting a site for the MRES?

Why must tape stack height be taken into account when selecting a site for the MRES?

• A. Because insufficient runout could be a possible danger to the aircraft
• B. To avoid excessive wear on fairlead
• C. To facilitate maintenance access
• D. To meet weight limitations

Answer: (A)

Tape stack height matters because it determines how much space the moving reel and its extending tape will require above and around the installation. When a site is chosen, you must ensure there is enough runout— the range of motion of the tape stack—so that even at its maximum extent, the moving parts do not encroach on the aircraft’s clearance envelope. If there isn’t sufficient runout, the extended tape could pose a danger to aircraft during operations, causing a potential collision or interference. While wear on fairlead, maintenance access, and weight limits are important considerations for other reasons, they do not address the immediate safety risk to aircraft that comes from inadequate vertical clearance of the tape stack’s moving components.

Tape stack height matters because it determines how much space the moving reel and its extending tape will require above and around the installation. When a site is chosen, you must ensure there is enough runout— the range of motion of the tape stack—so that even at its maximum extent, the moving parts do not encroach on the aircraft’s clearance envelope. If there isn’t sufficient runout, the extended tape could pose a danger to aircraft during operations, causing a potential collision or interference.

While wear on fairlead, maintenance access, and weight limits are important considerations for other reasons, they do not address the immediate safety risk to aircraft that comes from inadequate vertical clearance of the tape stack’s moving components.