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10. Other Changes
10.1In addition to altitude/flight level, destination,
and/or route changes, increasing or decreasing the
speed of an aircraft constitutes a change in a flight
plan. Therefore, at any time the average true airspeed
at cruising altitude between reporting points varies or
is expected to vary from that given in the flight plan
by plus or minus 5 percent, or 10knots, whichever is
greater, air traffic control should be advised.
11. Canceling Flight Plans
11.1Closing VFR and DVFR Flight Plans
11.1.1A pilot is responsible for ensuring that his/her
VFR or DVFR flight plan is canceled. You should
close your flight plan with the nearest FSS, or if one
is not available, you may request any ATC facility to
relay your cancellation to the FSS. Control towers do
not automatically close VFR or DVFR flight plans as
they may not be aware that a particular VFR aircraft
is on a flight plan. If you fail to report or cancel your
flight plan within 1/2hour after your ETA, search and
rescue procedures are started.
11.2Canceling IFR Flight Plan
11.2.114 CFR Section 91.153 includes the statement
When a flight plan has been activated, the pilot in
command, upon canceling or completing the flight
under the flight plan, shall notify an FAA Flight
Service Station or ATC facility."
11.2.2An IFR flight plan may be canceled at any
time the flight is operating in VFR conditions outside
Class A airspace by the pilot stating CANCEL MY
IFR FLIGHT PLAN" to the controller or air/ground
station with which he/she is communicating.
Immediately after canceling an IFR flight plan, a pilot
should take necessary action to change to the
appropriate air/ground frequency, VFR radar beacon
code, and VFR altitude or flight level.
11.2.3ATC separation and information services will
be discontinued, including radar services (where
applicable). Consequently, if the canceling flight
desires VFR radar advisory service, the pilot must
specifically request it.
NOTE−
Pilots must be aware that other procedures may be
applicable to a flight that cancels an IFR flight plan within
an area where a special program, such as a designated
terminal radar service area, Class C airspace or Class B
airspace, has been established.
11.2.4If a DVFR flight plan requirement exists, the
pilot is responsible for filing this flight plan to replace
the canceled IFR flight plan. If a subsequent IFR
operation becomes necessary, a new IFR flight plan
must be filed and an ATC clearance obtained before
operating in IFR conditions.
11.2.5If operating on an IFR flight plan to an airport
with a functioning control tower, the flight plan is
automatically closed upon landing.
11.2.6If operating on an IFR flight plan to an airport
where there is no functioning control tower, the pilot
must initiate cancellation of the IFR flight plan. This
can be done after landing if there is a functioning FSS
or other means of direct communications with ATC.
In the event there is no FSS and air/ground
communications with ATC is not possible below a
certain altitude, the pilot would, weather conditions
permitting, cancel his/her IFR flight plan while still
airborne and able to communicate with ATC by radio.
This will not only save the time and expense of
canceling the flight plan by telephone but will quickly
release the airspace for use by other aircraft.
AIP ENR 1.10−15
United States of America 15 MAR 07
Federal Aviation Administration Nineteenth Edition
11.3RNAV and RNP Operations
11.3.1During the pre−flight planning phase the
availability of the navigation infrastructure required
for the intended operation, including any non−RNAV
contingencies, must be confirmed for the period of
intended operation. Availability of the onboard
navigation equipment necessary for the route to be
flown must be confirmed.
11.3.2If a pilot determines a specified RNP level
cannot be achieved, revise the route or delay the
operation until appropriate RNP level can be ensured.
11.3.3The onboard navigation database must be
appropriate for the region of intended operation and
must include the navigation aids, waypoints, and
coded terminal airspace procedures for the departure,
arrival and alternate airfields.
11.3.4During system initialization, pilots of aircraft
equipped with a Flight Management System or other
RNAV−certified system, must confirm that the
navigation database is current, and verify that the
aircraft position has been entered correctly. Flight
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