350 

14 CFR Ch. I (1–1–24 Edition) 

§ 125.224 

route, the airplane must be operated 
under the instructions and procedures 
specified for that event in the manual 
required by § 125.71. 

(d) This section does not apply to air-

planes used solely within the State of 
Hawaii, within the State of Alaska, 
within that part of Canada west of lon-
gitude 130 degrees W, between latitude 
70 degrees N, and latitude 53 degrees N, 
or during any training, test, or ferry 
flight. 

(e) Without regard to any other pro-

vision of this part, an alternate elec-
trical power supply is not required for 
airborne weather radar equipment. 

§ 125.224 Collision avoidance system. 

Effective January 1, 2005, any air-

plane you operate under this part 125 
must be equipped and operated accord-
ing to the following table: 

C

OLLISION

A

VOIDANCE

S

YSTEMS

 

If you operate any 

. . . 

Then you must operate that airplane 

with: 

(a) Turbine-powered 

airplane of more 
than 33,000 
pounds maximum 
certificated take-
off 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 fol-
lowing 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 equiv-

alent to TSO C–119b (version 7.0), 
or a later version, capable of coordi-
nating with units that meet TSO C– 
119a (version 6.04A Enhanced), or a 
later version. 

(b) Piston-powered 

airplane of more 
than 33,000 
pounds maximum 
certificated take-
off weight.

(1) TCAS I that meets TSO C–118, or 

a later version, or 

(2) A collision avoidance system equiv-

alent to TSO C–118, or a later 
version, or 

(1)(3) A collision avoidance system and 

Mode S transponder that meet para-
graph (a)(1) of this section. 

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

§ 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 air-
plane type certificated before October 

1, 1969, for operations above 25,000 feet 
altitude, nor a multiengine, turbine 
powered airplane type certificated be-
fore 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 fol-
lowing information must be able to be 
determined within the ranges, accura-
cies, resolution, and recording inter-
vals 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 air-
plane 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 fol-
lowing information must be able to be 
determined within the ranges, accura-
cies, resolutions, and recording inter-
vals 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; 

351 

Federal Aviation Administration, DOT 

§ 125.225 

(12) Control wheel or lateral control 

surface position; 

(13) Rudder pedal or yaw control sur-

face 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 pa-
rameters specified in appendix D of 
this part that are available on the dig-
ital data bus must be recorded within 
the ranges, accuracies, resolutions, and 
sampling intervals specified. 

(d) No person may operate under this 

part an airplane that is manufactured 
after October 11, 1991, 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 pa-
rameters specified in appendix D of 
this part must be recorded within the 
ranges, accuracies, resolutions and 
sampling intervals specified. For the 
purpose of this section, ‘‘manufac-
tured’’ means the point in time at 
which the airplane inspection accept-
ance records reflect that the airplane is 
complete and meets the FAA-approved 
type design data. 

(e) Whenever a flight recorder re-

quired 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. 

(f) Except as provided in paragraph 

(g) of this section, and except for re-
corded 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 
section, as applicable, until the air-
plane has been operated for at least 25 
hours of the operating time specified in 
§ 125.227(a) of this chapter. A total of 1 

hour of recorded data may be erased for 
the purpose of testing the flight re-
corder or the flight recorder system. 
Any erasure made in accordance with 
this paragraph must be of the oldest re-
corded data accumulated at the time of 
testing. Except as provided in para-
graph (g) of this section, no record need 
be kept more than 60 days. 

(g) In the event of an accident or oc-

currence that requires immediate noti-
fication of the National Transportation 
Safety Board under 49 CFR part 830 and 
that results in termination of the 
flight, the certificate holder shall re-
move the recording media from the air-
plane and keep the recorded data re-
quired by paragraph (a), (b), (c), or (d) 
of this section, as applicable, for at 
least 60 days or for a longer period 
upon the request of the Board or the 
Administrator. 

(h) Each flight recorder required by 

this section must be installed in ac-
cordance with the requirements of 
§ 25.1459 of this chapter in effect on Au-
gust 31, 1977. The correlation required 
by § 25.1459(c) of this chapter need be 
established only on one airplane of any 
group of airplanes. 

(1) That are of the same type; 
(2) On which the flight recorder mod-

els and their installations are the 
same; and 

(3) On which there are no differences 

in the type design with respect to the 
installation of the first pilot’s instru-
ments associated with the flight re-
corder. The most recent instrument 
calibration, including the recording 
medium from which this calibration is 
derived, and the recorder correlation 
must be retained by the certificate 
holder. 

(i) Each flight recorder required by 

this section that records the data spec-
ified in paragraphs (a), (b), (c), or (d) of 
this section must have an approved de-
vice to assist in locating that recorder 
under water. 

(j) After August 20, 2001, this section 

applies only to the airplane models 
listed in § 125.226(l)(2). All other air-
planes must comply with the require-
ments of § 125.226. 

[Doc. No. 25530, 53 FR 26148, July 11, 1988; 53 
FR 30906, Aug. 16, 1988; Amdt. 125–54, 73 FR 
12568, Mar. 7, 2008]