729
Federal Aviation Administration, DOT
§ 91.187
§ 91.183
IFR communications.
Unless otherwise authorized by ATC,
the pilot in command of each aircraft
operated under IFR in controlled air-
space must ensure that a continuous
watch is maintained on the appropriate
frequency and must report the fol-
lowing as soon as possible—
(a) The time and altitude of passing
each designated reporting point, or the
reporting points specified by ATC, ex-
cept that while the aircraft is under
radar control, only the passing of those
reporting points specifically requested
by ATC need be reported;
(b) Any unforecast weather condi-
tions encountered; and
(c) Any other information relating to
the safety of flight.
[Doc. No. 18334, 54 FR 34294, Aug. 18, 1989, as
amended by Amdt. 91–296, 72 FR 31679, June
7, 2007]
§ 91.185
IFR operations: Two-way
radio communications failure.
(a)
General. Unless otherwise author-
ized by ATC, each pilot who has two-
way radio communications failure
when operating under IFR shall comply
with the rules of this section.
(b)
VFR conditions. If the failure oc-
curs in VFR conditions, or if VFR con-
ditions are encountered after the fail-
ure, each pilot shall continue the flight
under VFR and land as soon as prac-
ticable.
(c)
IFR conditions. If the failure oc-
curs in IFR conditions, or if paragraph
(b) of this section cannot be complied
with, each pilot shall continue the
flight according to the following:
(1)
Route. (i) By the route assigned in
the last ATC clearance received;
(ii) If being radar vectored, by the di-
rect route from the point of radio fail-
ure to the fix, route, or airway speci-
fied in the vector clearance;
(iii) In the absence of an assigned
route, by the route that ATC has ad-
vised may be expected in a further
clearance; or
(iv) In the absence of an assigned
route or a route that ATC has advised
may be expected in a further clearance,
by the route filed in the flight plan.
(2)
Altitude. At the highest of the fol-
lowing altitudes or flight levels for the
route segment being flown:
(i) The altitude or flight level as-
signed in the last ATC clearance re-
ceived;
(ii) The minimum altitude (con-
verted, if appropriate, to minimum
flight level as prescribed in § 91.121(c))
for IFR operations; or
(iii) The altitude or flight level ATC
has advised may be expected in a fur-
ther clearance.
(3)
Leave clearance limit. (i) When the
clearance limit is a fix from which an
approach begins, commence descent or
descent and approach as close as pos-
sible to the expect-further-clearance
time if one has been received, or if one
has not been received, as close as pos-
sible to the estimated time of arrival
as calculated from the filed or amended
(with ATC) estimated time en route.
(ii) If the clearance limit is not a fix
from which an approach begins, leave
the clearance limit at the expect-fur-
ther-clearance time if one has been re-
ceived, or if none has been received,
upon arrival over the clearance limit,
and proceed to a fix from which an ap-
proach begins and commence descent
or descent and approach as close as
possible to the estimated time of ar-
rival as calculated from the filed or
amended (with ATC) estimated time en
route.
[Doc. No. 18334, 54 FR 34294, Aug. 18, 1989;
Amdt. 91–211, 54 FR 41211, Oct. 5, 1989]
§ 91.187
Operation under IFR in con-
trolled airspace: Malfunction re-
ports.
(a) The pilot in command of each air-
craft operated in controlled airspace
under IFR shall report as soon as prac-
tical to ATC any malfunctions of navi-
gational, approach, or communication
equipment occurring in flight.
(b) In each report required by para-
graph (a) of this section, the pilot in
command shall include the—
(1) Aircraft identification;
(2) Equipment affected;
(3) Degree to which the capability of
the pilot to operate under IFR in the
ATC system is impaired; and
(4) Nature and extent of assistance
desired from ATC.
VerDate Mar<15>2010
20:48 Jan 30, 2014
Jkt 232047
PO 00000
Frm 00739
Fmt 8010
Sfmt 8010
Q:\14\14V2.TXT
ofr150
PsN: PC150