Fixed-wing aircraft will normally have a minimum vertical separation in the marshal pattern.

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Multiple Choice

Fixed-wing aircraft will normally have a minimum vertical separation in the marshal pattern.

The main idea is how much vertical room you keep between fixed‑wing aircraft while they’re parked or held in the marshal stack. Using 1000 ft of vertical separation gives enough margin for small altitude errors, gusts, and minor control inputs, so aircraft won’t drift into each other, while still allowing several airplanes to be arranged efficiently in the stack without wasting airspace. A smaller gap like 500 ft would be too tight given normal altitude-keeping accuracy, while larger gaps such as 1500 or 2000 ft would unnecessarily slow the sequence and increase hold times. So, 1000 ft strikes the right balance between safety and efficiency.

The main idea is how much vertical room you keep between fixed‑wing aircraft while they’re parked or held in the marshal stack. Using 1000 ft of vertical separation gives enough margin for small altitude errors, gusts, and minor control inputs, so aircraft won’t drift into each other, while still allowing several airplanes to be arranged efficiently in the stack without wasting airspace. A smaller gap like 500 ft would be too tight given normal altitude-keeping accuracy, while larger gaps such as 1500 or 2000 ft would unnecessarily slow the sequence and increase hold times. So, 1000 ft strikes the right balance between safety and efficiency.

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