Definition
Eights on pylons differs from every other ground-reference maneuver in what the pilot is asked to hold constant. In turns around a point the target is a constant radius; here the target is a line of sight. The airplane is flown in a figure-eight around two pylons at pivotal altitude, and the reference line projected across the wingtip must stay locked on the pylon throughout. Because pivotal altitude is a function of groundspeed, and groundspeed varies continuously in any wind, holding that sight line requires a continuous shallow climb and descent rather than level flight.
FAA-S-ACS-7 requires the applicant to determine the approximate pivotal altitude, select suitable pylons that permit straight-and-level flight between them, enter in the correct direction and position at an appropriate altitude and airspeed, establish the correct bank for the conditions not exceeding 40 degrees, apply smooth and continuous corrections so the line-of-sight reference remains on the pylon, and maintain pylon position while avoiding slips and skids. The knowledge items call out pivotal altitude and the factors that affect it, the effect of wind on ground track, and emergency landing considerations, since the maneuver is flown low.
Why It Matters for Flight Schools
Instructors generally treat eights on pylons as the last commercial maneuver to click, because the correction is counter-intuitive: if the pylon appears to move ahead of the wingtip the airplane is below pivotal altitude and must climb, which feels like the opposite of what a pilot chasing a ground reference expects to do. Once a student stops steering toward the pylon and starts correcting altitude instead, the maneuver usually comes together quickly.
It is also the maneuver with the most operational constraints attached. It needs two suitable pylons at the right separation, a practice area that tolerates low maneuvering, and wind that is steady enough for the pivotal altitude to be predictable, which makes it a scheduling and instructor-standardisation item as much as a flying one.
How Aviatize Handles This
Because eights on pylons depends on a concept as much as on handling, Aviatize lets a school grade the ground-reference stage as separate objectives — the pivotal-altitude calculation, the entry, and the sight-line corrections — so the training record shows which part is unresolved. Instructors briefing the same maneuver across a fleet also benefit from having the school's own tolerance notes attached to the objective rather than held in individual instructors' heads.
Frequently Asked Questions
- What is the bank limit for eights on pylons?
- FAA-S-ACS-7 requires the applicant to establish the correct bank angle for the conditions, not to exceed 40 degrees. The bank is a result of the pylon geometry and wind rather than a target in itself — the graded skill is keeping the line-of-sight reference on the pylon while avoiding slips and skids.
- How is eights on pylons different from turns around a point?
- Turns around a point asks the pilot to hold a constant radius by varying bank. Eights on pylons asks the pilot to hold a constant line of sight across the wingtip by varying altitude around pivotal altitude. One is a ground-track problem; the other is an altitude problem disguised as a ground-track problem.
- Do I climb or descend if the pylon moves ahead of the wingtip?
- Climb. If the pylon appears to move forward of the reference line the airplane is below pivotal altitude, and climbing raises the sight line back onto the pylon. If the pylon falls behind the reference line the airplane is above pivotal altitude and needs to descend.