Final answer:
No, an ILS approach does not involve dead reckoning from a fix to the localizer intercept; it relies on established procedures and navigation aids like GPS or VOR.
Step-by-step explanation:
The Instrument Landing System (ILS) is a precision runway approach aid based on two radio beams that provide pilots with vertical and horizontal guidance during an approach to land. While an ILS provides precise navigation guidance to aircraft for the approach and landing phase with the localizer providing lateral guidance and the glide slope indicating the vertical path, dead reckoning is a method used by pilots to estimate their current position based on previously determined positions, or fixes, and estimates of speed and direction.
So, to answer the question: No, an ILS approach does not typically involve a portion of dead reckoning from a fix to the localizer intercept. The transition from a fix to the localizer course is generally based on established air traffic control procedures and the use of navigation aids other than dead reckoning, such as GPS or VOR signals.