PLT522: Pinnacle And Ridgeline Operations
What code PLT522 covers, why the FAA tests it, and how to study Pinnacle And Ridgeline Operations before your checkride.
Recall helicopter - Pinnacle / Ridgeline operations
What this means for your checkride
A pinnacle is an area from which the surface drops away steeply on all sides, and a ridgeline is a long area that drops away steeply on one or two sides. When climbing to a pinnacle or ridgeline, do it on the upwind side when practicable to use any updrafts, and fly the approach path parallel to the ridgeline and into the wind as much as possible. Generally the greater the wind, the steeper the approach should be to avoid turbulence and downdrafts on the leeward side. A pinnacle takeoff is an airspeed over altitude maneuver, since gaining airspeed improves the glide angle and reduces exposure in the height velocity avoid area, and the pilot should never dive down the slope after clearing the pinnacle.
Pinnacle and ridgeline operations combine wind, terrain, and forced landing planning that are commonly tested for mountain and elevated site work.
The absence of obstacles does not make it easier; updrafts, downdrafts, turbulence, and poor forced landing terrain can still present extreme hazards.
Where to study it
A code on your test report is an area of deficiency. An authorized instructor must review it with you and endorse that review before you take the practical test, and the examiner may revisit it during the oral. Study it until you can explain it out loud, not just recognize the answer.