14 CFR 125.227 -- Cockpit voice recorders.

10/11/23, 11:37 AM

eCFR :: 14 CFR 125.227 -- Cockpit voice recorders. (FAR 125.227)

§ 125.227 Cockpit voice recorders.
(a)  No certificate holder may operate a large turbine engine powered airplane or a large pressurized airplane
with four reciprocating engines unless an approved cockpit voice recorder is installed in that airplane and
is operated continuously from the start of the use of the checklist (before starting engines for the purpose
of flight) to completion of the final checklist at the termination of the flight.
(b)  Each certificate holder shall establish a schedule for completion, before the prescribed dates, of the
cockpit voice recorder installations required by paragraph (a) of this section. In addition, the certificate
holder shall identify any airplane specified in paragraph (a) of this section he intends to discontinue using
before the prescribed dates.
(c)  The cockpit voice recorder required by this section must also meet the following standards:
(1)  The requirements of part 25 of this chapter in effect after October 11, 1991.
(2)  After September 1, 1980, each recorder container must—
(i)  Be either bright orange or bright yellow;
(ii)  Have reflective tape affixed to the external surface to facilitate its location under water; and
(iii)  Have an approved underwater locating device on or adjacent to the container which is secured
in such a manner that it is not likely to be separated during crash impact, unless the cockpit
voice recorder and the flight recorder, required by § 125.225 of this chapter, are installed
adjacent to each other in such a manner that they are not likely to be separated during crash
impact.
(d)  In complying with this section, an approved cockpit voice recorder having an erasure feature may be
used so that, at any time during the operation of the recorder, information recorded more than 30 minutes
earlier may be erased or otherwise obliterated.
(e)  For those aircraft equipped to record the uninterrupted audio signals received by a boom or a mask
microphone the flight crewmembers are required to use the boom microphone below 18,000 feet mean
sea level. No person may operate a large turbine engine powered airplane or a large pressurized
airplane with four reciprocating engines manufactured after October 11, 1991, or on which a cockpit voice
recorder has been installed after October 11, 1991, unless it is equipped to record the uninterrupted
audio signal received by a boom or mask microphone in accordance with § 25.1457(c)(5) of this chapter.
(f)  In the event of an accident or occurrence requiring immediate notification of the National Transportation
Safety Board under 49 CFR part 830 of its regulations, which results in the termination of the flight, the
certificate holder shall keep the recorded information for at least 60 days or, if requested by the
Administrator or the Board, for a longer period. Information obtained from the record is used to assist in
determining the cause of accidents or occurrences in connection with investigations under 49 CFR part
830. The Administrator does not use the record in any civil penalty or certificate action.
(g)  By April 7, 2012, all turbine engine-powered airplanes subject to this section that are manufactured
before April 7, 2010, must have a cockpit voice recorder installed that also—
(1)  Meets the requirements of § 25.1457(a)(3), (a)(4), (a)(5), and (d)(6) of this chapter;
(2)  Retains at least the last 2 hours of recorded information using a recorder that meets the standards
of TSO–C123a, or later revision; and

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10/11/23, 11:37 AM

eCFR :: 14 CFR 125.227 -- Cockpit voice recorders. (FAR 125.227)

(3)  Is operated continuously from the start of the use of the checklist (before starting the engines for the
purpose of flight), to the completion of the final checklist at the termination of the flight.
(h)  All turbine engine-powered airplanes subject to this section that are manufactured on or after April 7,
2010, must have a cockpit voice recorder installed that also—
(1)  Is installed in accordance with the requirements of § 25.1457 (except for paragraph (a)(6)) of this
chapter;
(2)  Retains at least the last 2 hours of recorded information using a recorder that meets the standards
of TSO–C123a, or later revision; and
(3)  Is operated continuously from the start of the use of the checklist (before starting the engines for the
purpose of flight), to the completion of the final checklist at the termination of the flight.
(4)  For all airplanes manufactured on or after December 6, 2010, also meets the requirements of §
25.1457(a)(6) of this chapter.
(i)  All airplanes required by this part to have a cockpit voice recorder and a flight data recorder, that install
datalink communication equipment on or after December 6, 2010, must record all datalink messages as
required by the certification rule applicable to the airplane.
[Doc. No. 25530, 53 FR 26149, July 11, 1988, as amended by Amdt. 125–54, 73 FR 12568

, Mar. 7, 2008; Amdt. 125–54, 74 FR 32801, July 9, 2009; Amdt. 125–60, 75 FR 17046; Apr. 5, 2010]

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