Position Homing Indicator (PHI)
No FMC, no INS, no VORTAC (ADF anyone!?)! However, the G-91 does bring you PHI – a doppler based system to determine distance travelled from a known point which will provide bearing and distance remaining to 5 pre-programmed waypoints.The Sim Skunk Works implementation involves you editting a *.ln3 file in notepad with decimal coords for the 5 waypoints. Functional but a tad time consuming.
- Click on download title to view route info
- Download PHI file (*.ln3) to the G91 PHI folder (see below)
- Start the sim, open the G-91 Setup Program
- Load the PHI file.
- PHI selector (top left of compass card) – selected (it defaults to ADF)
Clicking the title below will take you to the route overview and image. Or you can click ‘download’ to get the file instantly.
Make your own
Some resources to help you plan your own PHI ‘flight plan.’