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if unable, advise the pilot to maintain VFR outside
surface area and to standby for clearance.
PHRASEOLOGYMAINTAIN
V-F-R OUTSIDE (location) SURFACE
AREA. STANDBY FOR CLEARANCE.
2. When an aircraft requests a SVFR clearance
to enter surface area during periods of SVFR activity,
instruct the pilot to maintain VFR conditions outside
surface area pending arrival/recall/departure of
SVFR operations.
PHRASEOLOGYMAINTAIN
V-F-R CONDITIONS OUTSIDE OF THE
(location) SURFACE AREA PENDING
ARRIVAL/RECALL/DEPARTURE OF IFR/SPECIAL
V-F-R AIRCRAFT.
3. If the pilot is operating inside the surface area
and requests an SVFR clearance, advise the pilot to
maintain VFR and standby for clearance.
PHRASEOLOGYMAINTAIN
V-F-R, STANDBY FOR CLEARANCE.
e. Suspend SVFR operations when necessary to
comply with instructions contained in subpara
4-5-4b or when requested by the control facility.
PHRASEOLOGYSPECIAL
V-F-R AUTHORIZATION DISCONTINUED.
RETURN TO AIRPORT OR DEPART SURFACE AREA.
ADVISE INTENTIONS.
After response
REPORT LANDING COMPLETED/LEAVING
SURFACE AREA.
4-5-3. VISIBILITY BELOW 1 MILE
a. When the ground visibility is officially reported
at an airport as less than 1 mile, treat requests for
SVFR operations at that airport by other than
helicopters as follows:
NOTE-
14 CFR Part 91 does not prohibit helicopter Special VFR
flights when visibility is less than 1 mile.
1. Inform departing aircraft that ground visibility
is less than 1 mile and that a clearance cannot be
issued.
PHRASEOLOGY-
(Location) VISIBILITY (value). A-T-C UNABLE TO
ISSUE DEPARTURE CLEARANCE.
2. Inform arriving aircraft operating outside of
the surface area that ground visibility is less than
1mile and, unless an emergency exists, a clearance
cannot be issued.
PHRASEOLOGY-
(Location) VISIBILITY (value). A-T-C UNABLE TO
ISSUE ENTRY CLEARANCE UNLESS AN
EMERGENCY EXISTS.
3. Inform arriving aircraft operating within the
surface area that ground visibility is less than 1 mile
and request the pilot's intentions. Relay the pilot's
response to the control facility immediately.
PHRASEOLOGY-
(Location) VISIBILITY (value). ADVISE INTENTIONS.
b. When weather conditions are not officially
reported at an airport and the pilot advises the flight
visibility is less than 1 mile, treat request for SVFR
operations at that airport by other than helicopters as
follows:
NOTE-
14 CFR Part 91 prescribes use of officially reported
ground visibility at airports where it is provided, and
landing or takeoff flight visibility where it is not, as the
governing ground visibility for VFR and SVFR
operations.
1. Inform departing aircraft that a clearance
cannot be issued.
PHRASEOLOGYUNABLE
TO ISSUE DEPARTURE CLEARANCE.
2. Inform arriving aircraft operating outside the
surface area that unless an emergency exists, a
clearance cannot be issued.
PHRASEOLOGYATC
UNABLE TO ISSUE ENTRY CLEARANCE UNLESS
AN EMERGENCY EXISTS.
3. Request intentions of arriving aircraft
operating within surface areas. Relay the pilot's
response to the control facility immediately.
PHRASEOLOGYADVISE
INTENTIONS.
c. Transmit a clearance to scheduled air carrier
aircraft to conduct operations if ground visibility is
not less than 1/2 mile.
2/14/08 JO 7110.10T
Special VFR Operation 4-5-3
d. Transmit a clearance to an aircraft to fly through
surface area if the pilot reports flight visibility is at
least 1 statute mile.
4-5-4. PREDESIGNED SPECIAL VFR
CLEARANCES
Transmit predesigned SVFR clearances only during
those periods authorized by the control facility.
NOTEThe
control facility may rescind this authorization at any
time.
a. Apply these procedures only to aircraft
equipped with a functioning two-way radio. Refer all
requests for no-radio SVFR operations to the control
facility.
b. Transmit clearances so that only one aircraft at
a time operates in surface area unless:
1. Otherwise authorized by a letter of agreement
between the control facility and the AFSS/FSS.
2. A pilot requests and all pilots agree that they
will maintain visual separation while operating in
surface area.
PHRASEOLOGYMAINTAIN
VISUAL SEPARATION FROM (aircraft type).

2/14/08 JO 7110.10T
En Route Flight Advisory Service (EFAS) 4-6-1
Section 6. En Route Flight Advisory Service (EFAS)
4-6-1. GENERAL
The purpose of EFAS, radio call “FLIGHT WATCH”
(FW), is to provide en route aircraft with timely and
　
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