149
Federal Aviation Administration, DOT
§ 121.349
(2) Demonstrate by test and analysis
that the original sensor signal value
can be reconstructed from the recorded
data. This demonstration requires
that:
(i) The FAA determine that the pro-
cedure and the test results submitted
by the certificate holder as its compli-
ance with paragraph (c)(2) of this sec-
tion are repeatable; and
(ii) The certificate holder maintains
documentation of the procedure re-
quired to reconstruct the original sen-
sor signal value. This documentation is
also subject to the requirements of
§ 121.344(i).
(d)
Compliance.
Compliance is re-
quired as follows:
(1) No later than October 20, 2011,
each operator must determine, for each
airplane on its operations specifica-
tions, whether the airplane’s DFDR
system is filtering any of the param-
eters listed in paragraph (c) of this sec-
tion. The operator must create a record
of this determination for each airplane
it operates, and maintain it as part of
the correlation documentation re-
quired by § 121.344(j)(3) of this part.
(2) For airplanes that are not fil-
tering any listed parameter, no further
action is required unless the airplane’s
DFDR system is modified in a manner
that would cause it to meet the defini-
tion of filtering on any listed param-
eter.
(3) For airplanes found to be filtering
a parameter listed in paragraph (c) of
this section, the operator must either:
(i) No later than April 21, 2014, re-
move the filtering; or
(ii) No later than April 22, 2013, sub-
mit the necessary procedure and test
results required by paragraph (c)(2) of
this section.
(4) After April 21, 2014, no aircraft
flight data recording system may filter
any parameter listed in paragraph (c)
of this section that does not meet the
requirements of Appendix B or M of
this part, unless the certificate holder
possesses test and analysis procedures
and the test results that have been ap-
proved by the FAA. All records of
tests, analysis and procedures used to
comply with this section must be
maintained as part of the correlation
documentation required by
§ 121.344(j)(3) of this part.
[Doc. No. FAA–2006–26135, 75 FR 7356, Feb. 19,
2010]
§ 121.347 Communication and naviga-
tion equipment for operations
under VFR over routes navigated
by pilotage.
(a) No person may operate an air-
plane under VFR over routes that can
be navigated by pilotage unless the air-
plane is equipped with the radio com-
munication equipment necessary under
normal operating conditions to fulfill
the following:
(1) Communicate with at least one
appropriate station from any point on
the route;
(2) Communicate with appropriate air
traffic control facilities from any point
within Class B, Class C, or Class D air-
space, or within a Class E surface area
designated for an airport in which
flights are intended; and
(3) Receive meteorological informa-
tion from any point en route by either
of two independent systems. One of the
means provided to comply with this
subparagraph may be used to comply
with paragraphs (a)(1) and (2) of this
section.
(b) No person may operate an air-
plane at night under VFR over routes
that can be navigated by pilotage un-
less that airplane is equipped with—
(1) Radio communication equipment
necessary under normal operating con-
ditions to fulfill the functions specified
in paragraph (a) of this section; and
(2) Navigation equipment suitable for
the route to be flown.
[Doc. No. 6258, 29 FR 19205, Dec. 31, 1964, as
amended by Amdt. 121–226, 56 FR 65663, Dec.
17, 1991; Amdt. 121–333, 72 FR 31681, June 7,
2007]
§ 121.349 Communication and naviga-
tion equipment for operations
under VFR over routes not navi-
gated by pilotage or for operations
under IFR or over the top.
(a)
Navigation equipment require-
ments—General.
No person may conduct
operations under VFR over routes that
cannot be navigated by pilotage, or op-
erations conducted under IFR or over
the top, unless—