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EXAMPLE−
1.A pilot experiencing two−way radio failure at an
assigned altitude of 7,000 feet is cleared along a direct
route which will require a climb to a minimum IFR altitude
of 9,000 feet, should climb to reach 9,000 feet at the time
or place where it becomes necessary (see 14 CFR
Section91.177(b)). Later while proceeding along an
airway with an MEA of 5,000 feet, the pilot would descend
to 7,000 feet (the last assigned altitude), because that
altitude is higher than the MEA.
2.A pilot experiencing two−way radio failure while being
progressively descended to lower altitudes to begin an
approach is assigned 2,700 feet until crossing the VOR and
then cleared for the approach. The MOCA along the airway
is 2,700 feet and MEA is 4,000 feet. The aircraft is within
22 NM of the VOR. The pilot should remain at 2,700 feet
until crossing the VOR because that altitude is the
minimum IFR altitude for the route segment being flown.
3.The MEA between a and b − 5,000 feet. The MEA
between b and c −5,000 feet. The MEA between c and d
−11,000 feet. The MEA between d and e − 7,000 feet. A pilot
had been cleared via a, b, c, d, to e. While flying between
a and b the assigned altitude was 6,000 feet and the pilot
was told to expect a clearance to 8,000 feet at b. Prior to
receiving the higher altitude assignment, the pilot
experienced two−way failure. The pilot would maintain
6,000 to b, then climb to 8,000 feet (the altitude the pilot
was advised to expect.) The pilot would maintain
8,000feet, then climb to 11,000 at c, or prior to c if
necessary to comply with an MCA at c. (14CFR Section
91.177(b).) Upon reaching d, the pilot would descend to
8,000 feet (even though the MEA was 7,000 feet), as 8,000
was the highest of the altitude situations stated in the rule
14 CFR Section 91.185.
12.7Leave Clearance Limit
12.7.1When the clearance limit is a fix from which
an approach begins, commence descent or descent
and approach as close as possible to the expect further
clearance time if one has been received, or if one has
not been received, as close as possible to the
estimated time of arrival as calculated from the filed
or amended (with ATC) estimated time en route.
12.7.2If the clearance limit is not a fix from which
an approach begins, leave the clearance limit at the
expect further clearance time if one has been
received, or if none has been received, upon arrival
over the clearance limit, and proceed to a fix from
which an approach begins and commence descent or
descent and approach as close as possible to the
estimated time of arrival as calculated from the filed
or amended (with ATC) estimated time en route.
13. Transponder Operation During
Two−Way Communications Failure
13.1If an aircraft with a coded radar beacon
transponder experiences a loss of two−way radio
capability, the pilot should adjust the transponder to
reply on Mode 3/A, Code 7600.
13.2The pilot should understand that the aircraft
may not be in an area of radar coverage.
AIP
United States of America
GEN 3.4−24
15 MAR 07
Nineteenth Edition Federal Aviation Administration
14. Reestablishing Radio Contact
14.1In addition to monitoring the NAVAID voice
feature, the pilot should attempt to reestablish
communications by attempting contact:
14.1.1On the previously assigned frequency.
14.1.2With an FSS or ARINC.
14.2If communications are established with an FSS
or ARINC, the pilot should advise the aircraft’s
position, altitude, and last assigned frequency; then
request further clearance from the controlling facility.
The preceding does not preclude the use of
121.5MHz. There is no priority on which action
should be attempted first. If the capability exists, do
all at the same time.
NOTE−
Aeronautical Radio Incorporated (ARINC) is a
commercial communications corporation which designs,
constructs, operates, leases or otherwise engages in radio
activities serving the aviation community. ARINC has the
capability of relaying information to/from ATC facilities
throughout the country.
AIP
United States of America
GEN 3.5−1
15 MAR 07
Federal Aviation Administration Nineteenth Edition
GEN 3.5 Meteorological Services
1. Meteorological Authority
1.1The meteorological services for civil aviation are
prepared by the National Oceanic and Atmospheric
Administration (NOAA) of the U.S. Department of
Commerce.
Postal Address:
National Weather Service
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