Aeronautical Information Manual (AIM), page 314

Index   313 -- Page 314 -- 315

A detailed departure route description or a radar vector
may be used to achieve the desired departure routing.

3. If it is necessary to make a minor revision to
the filed route, the controller will specify the assigned
DP or DP transition (or departure routing), the revi-
sion to the filed route, the assigned altitude or flight
level and any additional instructions necessary to
clear a departing aircraft.

Jet Star One Four Two Four cleared to Atlanta Airport,
South Boston two departure then as filed except change
route to read South Boston Victor 20 Greensboro, maintain
one seven thousand.

4. Additionally, in a nonradar environment, the

controller will specify one or more fixes, as neces-

sary, to identify the initial route of flight.

Cessna Three One Six Zero Foxtrot cleared to Charlotte
Airport as filed via Brooke, maintain seven thousand.
h. To ensure success of the program, pilots should:

1. Avoid making changes to a filed flight plan
just prior to departure.
2. State the following information in the initial
call-up to the facility when no change has been made
to the filed flight plan: Aircraft call sign, location,
type operation (IFR) and the name of the airport (or
fix) to which you expect clearance.

"Washington clearance delivery (or ground control if ap-
propriate) American Seventy Six at gate one, IFR
Los Angeles."
3. If the flight plan has been changed, state the
change and request a full route clearance.


"Washington clearance delivery, American Seventy Six at

gate one. IFR San Francisco. My flight plan route has been
amended (or destination changed). Request full route

4. Request verification or clarification from

ATC if ANY portion of the clearance is not clearly un-


5. When requesting clearance for the IFR por-
tion of a VFR/IFR flight, request such clearance prior
to the fix where IFR operation is proposed to com-
mence in sufficient time to avoid delay. Use the
following phraseology:

"Los Angeles center, Apache Six One Papa, VFR estimat-
ing Paso Robles VOR at three two, one thousand five
hundred, request IFR to Bakersfield."

5-2-6. Departure Restrictions, Clearance
Void Times, Hold for Release, and Release

a. ATC may assign departure restrictions, clear-
ance void times, hold for release, and release times,
when necessary, to separate departures from other
traffic or to restrict or regulate the departure flow.

1. Clearance Void Times. A pilot may receive
a clearance, when operating from an airport without
a control tower, which contains a provision for the

clearance to be void if not airborne by a specific time.

A pilot who does not depart prior to the clearance void

time must advise ATC as soon as possible of their
intentions. ATC will normally advise the pilot of the
time allotted to notify ATC that the aircraft did not de-
part prior to the clearance void time. This time cannot
exceed 30 minutes. Failure of an aircraft to contact
ATC within 30 minutes after the clearance void time
will result in the aircraft being considered overdue
and search and rescue procedures initiated.
1. Other IFR traffic for the airport where the clearance is
issued is suspended until the aircraft has contacted ATC or
until 30 minutes after the clearance void time or 30 minutes
after the clearance release time if no clearance void time
is issued.
2. Pilots who depart at or after their clearance void time
are not afforded IFR separation and may be in violation of
14 CFR Section 91.173 which requires that pilots receive
an appropriate ATC clearance before operating IFR in
controlled airspace.
Clearance void if not off by (clearance void time) and, if re-

quired, if not off by (clearance void time) advise (facility)

not later than (time) of intentions.

2. Hold for Release. ATC may issue "hold for
release" instructions in a clearance to delay an air-
craft's departure for traffic management reasons (i.e.,

weather, traffic volume, etc.). When ATC states in the

clearance, "hold for release," the pilot may not depart

utilizing that IFR clearance until a release time or
additional instructions are issued by ATC. In addi-
tion, ATC will include departure delay information in
conjunction with "hold for release" instructions. The
ATC instruction, "hold for release," applies to the IFR
clearance and does not prevent the pilot from depart-

5-2-4 Departure Procedures

Page 314 of the Aeronautical Information Manual (AIM.pdf)
AIM: Official Guide to Basic Flight Information and ATC Procedures

Index   313 -- Page 314 -- 315