search

airframesio / acars-decoder-typescript

ACARS Message Decoder for TypeScript / JavaScript
12 stars 11 forks source link

FPN coordinates are decimal minutes not decimal degrees #125

Open makrsmark opened 1 week ago

makrsmark commented 1 week ago

example: https://app.airframes.io/messages/3288793350

for the waypoint AIROW, N37148W079138 is being parsed as 37.148 N, 79.138 W however, the waypoint AIROW is 37-14-48.6900N 079-13-47.4800W according to the FAA,

https://www.faa.gov/air_traffic/flight_info/aeronav/aero_data/loc_id_search/fixes_waypoints/

if you do the math 48.69 seconds is 0.811 minutes. meaning the the waypoint is at 37.246 N, -79.229W +/- rounding

makrsmark commented 1 week ago

Label 44 POS messages have the same issue