{
  "$type": "site.standard.document",
  "description": "An improved Horizontal Situation Indicator module for use with an aircraft, wherein the HSI module is adapted for accepting Bank Angle Commands or waypoint data from a GPS flight module and for using the same to determine a heading error. The HSI module is further adapted for outputting the heading…",
  "path": "/patents/983271",
  "publishedAt": "2013-10-16T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B64C19/00",
    "L 3 COMM CORP [US]"
  ],
  "textContent": "An improved Horizontal Situation Indicator module for use with an aircraft, wherein the HSI module is adapted for accepting Bank Angle Commands or waypoint data from a GPS flight module and for using the same to determine a heading error. The HSI module is further adapted for outputting the heading error to the Flight Director module where it can be used to create a Roll Command for output to the Auto-Pilot, whereby the Auto-Pilot can be commanded to follow a turn using the HSI and the Flight Director without requiring an additional module be added to the aircraft to create the heading error for use by the Flight Director.",
  "title": "Method and apparatus for generating heading error data used by an Electronic Flight Director"
}