PET & PSR

Interactive Simulationv2.0 (Native)

PET & PSR Planner

Flight Planning (ATPL 065)

Mission Parameters

Total Distance (D)1000 NM

Planned TAS400 kt

Wind Component (W)0 kt

Neutral

Fuel Endurance (E)4 h

Key Principles

The PET is the point where time to destination equals time to return. It moves INTO THE WIND.

The PSR is the furthest point from which return to departure is possible within fuel endurance.

DEP

DEST

PET500 NM

PSR800 NM

GS Out (O)400 kt

GS Home (H)400 kt

Active Planning Vector

Point of Equal Time

Engine Failure Case (Critical Point)

Distance500 NM

Time to Point1h 15m

D × H / (O + H)

Point of Safe Return

Fuel Endurance Limit

Distance800 NM

Time to Point2h 00m

E × O × H / (O + H)