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Direction Finder (DF) Service 5-3-3
REPORT AIRPORT IN SIGHT. IF NO TRANSMISSION
IS RECEIVED FOR (time of interval) PROCEED V-F-R.
IF UNABLE, PROCEED (routing, fix, altitude as
specified by ATC). CONTACT (facility) ON (frequency).
b. Inform the pilot when the aircraft is over the DF
site. Advise pilot to perform landing check, and
provide guidance for outbound track.
PHRASEOLOGYOVER
(ABEAM) D-F SITE, PERFORM LANDING
CHECK. CONTINUE HEADING (degrees) or TURN
LEFT/RIGHT, HEADING (degrees). REPORT
ESTABLISHED HEADING (degrees).
c. Provide DF approach guidance in accordance
with the triangle or teardrop approach procedures as
specified on FAA Form 8260-10.
1. Triangle Approach Pattern.
(a) Time the outbound leg and issue descent
information. Normally, the outbound track should be
maintained for 3 minutes, but this may be adjusted
depending on airspeed and nature of the emergency.
Time intervals between bearing observations should
not exceed 15 seconds.
PHRASEOLOGYON
OUTBOUND LEG. DESCEND AND MAINTAIN
(altitude specified on FAA Form 8260-10 for outbound
course).
(b) When outbound leg is completed, issue
turn instructions so that the aircraft's course is
perpendicular to the final approach course. Issue
further descent information if so specified on FAA
Form 8260-10. Issue missed approach procedures as
specified on FAA Form 8260-10.
PHRASEOLOGYON
BASE LEG. IN CASE OF MISSED APPROACH,
CLIMB TO (altitude) ON COURSE (degrees) WITHIN
(number) MILES.
(c) At least two turns should be made onto
final approach.
(d) When the aircraft is on final approach,
advise the pilot to start descent and provide minimum
descent altitude and field elevation information. Take
bearings more frequently. Time intervals between
bearing observations should not exceed 5 seconds
during the estimated last 30 seconds of the approach.
PHRASEOLOGYON
FINAL APPROACH, BEGIN DESCENT. MINIMUM
DESCENT ALTITUDE (altitude), FIELD ELEVATION
(elevation). REPORT RUNWAY IN SIGHT.
(e) If the aircraft misses the approach, inform
the appropriate control facility.
2. Teardrop Approach Pattern.
(a) Provide guidance to establish the aircraft
on the outbound course. Issue descent information, if
appropriate. Time intervals between bearing observations
should not exceed 15 seconds.
(b) Issue direction of turn and inbound
heading information. Issue missed approach procedures
as specified on FAA Form 8260-10.
(c) When procedure turn is complete, provide
directional guidance and issue descent information.
The time intervals between the bearing observations
should not exceed 5 seconds during the estimated last
30 seconds of the approach.
(d) If aircraft misses the approach, inform the
appropriate control facility.
2/14/08 JO 7110.10T
ADF/VOR Orientation 5-4-1
Section 4. ADF/VOR Orientation
5-4-1. ACTIONS REQUIRED
When providing ADF/VOR orientation services to
an aircraft in emergency status:
a. Determine if the aircraft is in VFR or IFR
weather conditions, fuel remaining, altitude, and
heading.
b. If the aircraft is operating in IFR weather
conditions, coordinate with the appropriate control
facility.
c. Determine if the aircraft is on a flight plan. If the
aircraft is not on an IFR flight plan and is in VFR
weather conditions, advise the pilot to remain VFR.
5-4-2. ADF ORIENTATION/ADF CROSSFIX
When using ADF orientation and/or crossfix
procedures, determine the aircraft's position as
follows:
a. Position Fixing.
1. Advise the pilot to remain VFR, and provide
local altimeter setting.
PHRASEOLOGYMAINTAIN
V-F-R AT ALL TIMES. ADVISE IF
HEADING OR ALTITUDE CHANGE IS NECESSARY TO
REMAIN V-F-R. (Location) ALTIMETER (setting).
2. Obtain heading and altitude. Advise the pilot
to maintain straight and level flight and to align the
heading indicator with the magnetic compass.
PHRASEOLOGYMAINTAIN
STRAIGHT AND LEVEL FLIGHT. RESET
YOUR HEADING INDICATOR TO AGREE WITH YOUR
MAGNETIC COMPASS. AFTER YOU HAVE DONE
THIS, SAY YOUR HEADING AND ALTITUDE.
3. Determine the weather and the fuel conditions.
PHRASEOLOGYWHAT
IS THE WEATHER AT YOUR ALTITUDE AND
FUEL REMAINING IN TIME?
4. Advise the pilot to maintain the same
heading, verify the aircraft has ADF equipment, and
determine the airspeed.
PHRASEOLOGYCONTINUE
HEADING (degrees). WHAT TYPE OF
NAVIGATIONAL EQUIPMENT DO YOU HAVE ON
BOARD, AND WHAT IS YOUR AIRSPEED?
5. Advise the pilot to tune the ADF receiver to
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