Federal Aviation Administration, DOT

Section 135.152

digital method of recording and storing
data, and a method of readily retrieving that data from the storage medium. The parameters in appendix D or
E of this part, as applicable, that are
set forth below, must be recorded within the ranges, accuracies, resolutions,
and sampling intervals as specified.
(1) Except as provided in paragraph
(b)(3) of this section for aircraft type
certificated before October 1, 1969, the
following parameters must be recorded:
(i) Time;
(ii) Altitude;
(iii) Airspeed;
(iv) Vertical acceleration;
(v) Heading;
(vi) Time of each radio transmission
to or from air traffic control;
(vii) Pitch attitude;
(viii) Roll attitude;
(ix) Longitudinal acceleration;
(x) Control column or pitch control
surface position; and
(xi) Thrust of each engine.
(2) Except as provided in paragraph
(b)(3) of this section for aircraft type
certificated after September 30, 1969,
the following parameters must be recorded:
(i) Time;
(ii) Altitude;
(iii) Airspeed;
(iv) Vertical acceleration;
(v) Heading;
(vi) Time of each radio transmission
either to or from air traffic control;
(vii) Pitch attitude;
(viii) Roll attitude;
(ix) Longitudinal acceleration;
(x) Pitch trim position;
(xi) Control column or pitch control
surface position;
(xii) Control wheel or lateral control
surface position;
(xiii) Rudder pedal or yaw control
surface position;
(xiv) Thrust of each engine;
(xv) Position of each thrust reverser;
(xvi) Trailing edge flap or cockpit
flap control position; and
(xvii) Leading edge flap or cockpit
flap control position.
(3) For aircraft manufactured after
October 11, 1991, all of the parameters
listed in appendix D or E of this part,
as applicable, must be recorded.
(c) Whenever a flight recorder required by this section is installed, it

must be operated continuously from
the instant the airplane begins the
takeoff roll or the rotorcraft begins the
lift-off until the airplane has completed the landing roll or the rotorcraft
has landed at its destination.
(d) Except as provided in paragraph
(c) 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) of this section until
the aircraft has been operating for at
least 25 hours of the operating time
specified in paragraph (c) of this section. In addition, each certificate holder shall keep the recorded data prescribed in paragraph (b) of this section
for an airplane until the airplane has
been operating for at least 25 hours,
and for a rotorcraft until the rotorcraft
has been operating for at least 10
hours, of the operating time specified
in paragraph (c) of this section. A total
of 1 hour of recorded data may be
erased for the purpose of testing the
flight recorder or the flight recorder
system. Any erasure made in accordance with this paragraph must be of
the oldest recorded data accumulated
at the time of testing. Except as provided in paragraph (c) of this section,
no record need be kept more than 60
days.
(e) In the event of an accident or occurrence that requires the immediate
notification of the National Transportation Safety Board under 49 CFR part
830 of its regulations and that results
in termination of the flight, the certificate holder shall remove the recording
media from the aircraft and keep the
recorded data required by paragraphs
(a) and (b) of this section for at least 60
days or for a longer period upon request of the Board or the Administrator.
(f)(1) For airplanes manufactured on
or before August 18, 2000, and all other
aircraft, each flight recorder required
by this section must be installed in accordance with the requirements of
Section 23.1459 (except paragraphs (a)(3)(ii)
and (6)), Section 25.1459 (except paragraphs
(a)(3)(ii) and (7)), Section 27.1459 (except paragraphs (a)(3)(ii) and (6)), or Section 29.1459 (except paragraphs (a)(3)(ii) and (6)), as
appropriate, of this chapter. The correlation required by paragraph (c) of

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