Section 125.225

14 CFR Ch. I (1-1-19 Edition)

COLLISION AVOIDANCE SYSTEMS
If you operate any
. . .

Then you must operate that airplane
with:

(a) Turbine-powered
airplane of more
than 33,000
pounds maximum
certificated takeoff weight.

(1) An appropriate class of Mode S
transponder that meets Technical
Standard Order (TSO) C-112, or a
later version, and one of the following approved units:
(i) TCAS II that meets TSO C-119b
(version 7.0), or a later version.
(ii) TCAS II that meets TSO C-119a
(version 6.04A Enhanced) that was
installed in that airplane before May
1, 2003. If that TCAS II version
6.04A Enhanced no longer can be
repaired to TSO C-119a standards,
it must be replaced with a TCAS II
that meets TSO C-119b (version
7.0), or a later version.
(iii) A collision avoidance system equivalent to TSO C-119b (version 7.0),
or a later version, capable of coordinating with units that meet TSO C-
119a (version 6.04A Enhanced), or a
later version.
(1) TCAS I that meets TSO C-118, or
a later version, or
(2) A collision avoidance system equivalent to TSO C-118, or a later
version, or
(1)(3) A collision avoidance system and
Mode S transponder that meet paragraph (a)(1) of this section.

(b) Piston-powered
airplane of more
than 33,000
pounds maximum
certificated takeoff weight.

[Doc. No. FAA-2001-10910, 68 FR 15903, Apr. 1,
2003]

Section 125.225

Flight data recorders.

(a) Except as provided in paragraph
(d) of this section, after October 11,
1991, no person may operate a large airplane type certificated before October
1, 1969, for operations above 25,000 feet
altitude, nor a multiengine, turbine
powered airplane type certificated before October 1, 1969, 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. The following information must be able to be
determined within the ranges, accuracies, resolution, and recording intervals specified in appendix D of this
part:
(1) Time;
(2) Altitude;
(3) Airspeed;
(4) Vertical acceleration;
(5) Heading;
(6) Time of each radio transmission
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.
(b) Except as provided in paragraph
(d) of this section, after October 11,
1991, no person may operate a large airplane type certificated after September
30, 1969, for operations above 25,000 feet
altitude, nor a multiengine, turbine
powered airplane type certificated
after September 30, 1969, 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. The following information must be able to be
determined within the ranges, accuracies, resolutions, and recording intervals specified in appendix D 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 trust reverser;
(16) Trailing edge flap or cockpit flap
control position; and
(17) Leading edge flap or cockpit flap
control position.
(c) 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 D of
this part that are available on the digital data bus must be recorded within

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