Federal Aviation Administration, DOT

Section 121.343

(c) Except as provided in paragraph
(l) of this section, no person may operate an airplane specified in paragraph
(b) of this section unless it is equipped,
before May 26, 1995, with one or more
approved flight recorders that utilize a
digital method of recording and storing
data and a method of readily retrieving
that data from the storage medium.
The following information must be
able to be determined within the
ranges, accuracies and recording intervals specified in appendix B of this
part:
(1) Time;
(2) Altitude;
(3) Airspeed;
(4) Vertical acceleration;
(5) Heading;
(6) Time of each radio transmission
either to or from air traffic control;
(7) Pitch attitude;
(8) Roll attitude;
(9) Longitudinal acceleration;
(10) Control column or pitch control
surface position; and
(11) Thrust of each engine.
(d) No person may operate an airplane specified in paragraph (b) of this
section that is manufactured after May
26, 1989, as well as airplanes specified in
paragraph (a) of this section that have
been type certificated after September
30, 1969, unless it is equipped with one
or more approved flight recorders that
utlitize a digital method of recording
and storing data and a method of readily retrieving that data from the storage medium. The following information must be able to be determined
within the ranges, accuracies, and recording intervals specified in appendix
B of this part:
(1) Time;
(2) Altitude;
(3) Airspeed;
(4) Vertical acceleration;
(5) Heading;
(6) Time of each radio transmission
either to or from air traffic control;
(7) Pitch attitude;
(8) Roll attitude;
(9) Longitudinal acceleration;
(10) Pitch trim position;
(11) Control column or pitch control
surface position;
(12) Control wheel or lateral control
surface position;

(13) Rudder pedal or yaw control surface position;
(14) Thrust of each engine;
(15) Position of each thrust reverser;
(16) Trailing edge flap or cockpit flap
control position; and
(17) Leading edge flap or cockpit flap
control position.
For the purpose of this section, manufactured means the point in time at
which the airplane inspection acceptance records reflect that the airplane is
complete and meets the FAA-approved
type design data.
(e) After October 11, 1991, no person
may operate a large airplane equipped
with a digital data bus and ARINC 717
digital flight data acquisition unit
(DFDAU) or equivalent unless it is
equipped with one or more approved
flight recorders that utilize a digital
method of recording and storing data
and a method of readily retrieving that
data from the storage medium. Any parameters specified in appendix B of this
part that are available on the digital
data bus must be recorded within the
ranges, accuracies, resolutions, and
sampling intervals specified.
(f) After October 11, 1991, no person
may operate an airplane specified in
paragraph (b) of this section that is
manufactured after October 11, 1991,
nor an airplane specified in paragraph
(a) of this section that has been type
certificated after September 30, 1969,
and manufactured after October 11,
1991, unless it is equipped with one or
more flight recorders that utilize a digital method of recording and storing
data and a method of readily retrieving
that data from the storage medium.
The parameters specified in appendix B
of this part must be recorded within
the ranges, accuracies, resolutions, and
sampling intervals specified.
(g) Whenever a flight recorder required by this section is installed, it
must be operated continuously from
the instant the airplane begins the
takeoff roll until it has completed the
landing roll at an airport.
(h) Except as provided in paragraph
(i) of this section, and except for recorded data erased as authorized in
this paragraph, each certificate holder
shall keep the recorded data prescribed
in paragraph (a), (b), (c), or (d) of this

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