PLT264: Settling With Power On Approach
What code PLT264 covers, why the FAA tests it, and how to study Settling With Power On Approach before your checkride.
Recall helicopter approach - settling with power
What this means for your checkride
Vortex ring state, formerly called settling-with-power, is a condition in which the helicopter descends into its own downwash with power applied and little or no climb performance. It develops when there is a vertical or nearly vertical descent of at least about 300 feet per minute, the rotor is using some engine power, and horizontal velocity is slower than effective translational lift. On approach it is invited by steep approaches with a tailwind and by attempting an out of ground effect hover without precise altitude control. Recovery is to increase airspeed by applying forward cyclic and/or partially lowering collective to fly out of the disturbed air.
Approaches are a frequent entry point into this hazard, so pilots must recognize the setup conditions and the correct recovery.
The instinct to raise collective to stop the descent only enlarges the stalled area and increases the rate of descent.
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.