Establish yourself on the reciprocal of the ILS localizer course
, 351 degrees, and fly outbound on the localizer.
The system will automatically slew the localizer course
pointer to the correct final approach course when an ILS, localizer, back course, LDA, or SDF approach is active in the external navigator.
The flight had been cleared for an approach at Ketchikan but flew past the inbound localizer course
. After ATC requested the pilot climb and maintain 7000 feet, he reported being low on fuel, and descended through an opening in the clouds into visual conditions.
The plan view shows a 2.79-degree offset localizer course
. So even though you're just about on the runway centerline, your CDI is pegged because you're not on the localizer.
I was able to fly the GPS-derived localizer course
with the step-downs all the way to the missed approach point with acceptable precision.
The transition gets the aircraft from the en route phase to the localizer course
by radar vector, DME arc, transition fix, ADF, procedure turn, holding pattern, vectors or other maneuvers.
During the second approach the pilot said he was having trouble staying on the localizer course
; control tower personnel reported seeing the airplane overfly the runway.
On navigators with an ILS receiver, the navigator will automatically switch from GPS to VLOC mode when the aircraft gets close to the localizer course
. Some navigators, such as the G1000 will automatically load the ILS frequency as the active frequency, whereas others, such as the GNS 430/530, will load it as standby, requiring the pilot to manually switch frequencies.
As it approached the Blue Ridge Airport, ATC cleared the King Air to hold "as published" on the localizer course
at 4000 feet.
Recall that unlike a VOR, the localizer course
you set is irrelevant to CDI behavior; the CDI merely indicates your relationship to the localizer regardless of the course setting.
You're right of the localizer course
, turning right and heading south, so that's a problem.
and runway centerline differ by more than three degrees.