342 

14 CFR Ch. I (1–1–19 Edition) 

§ 125.226 

are connected to the recording system 
must be recorded within the ranges, ac-
curacies, resolutions, and sampling in-
tervals specified in Appendix E of this 
part by August 20, 2001. 

(3) That were subject to § 125.225(e) of 

this part, all conditions of § 125.225(c) 
must continue to be met until compli-
ance with paragraph (c)(1) of this sec-
tion is accomplished. 

(d) For all turbine-engine-powered 

transport category airplanes that were 
manufactured after October 11, 1991— 

(1) The parameters listed in para-

graphs (a)(1) through (a)(34) of this sec-
tion must be recorded within the 
ranges, accuracies, resolutions, and re-
cording intervals specified in Appendix 
E of this part by August 20, 2001. 
Paramaters listed in paragraphs (a)(12) 
through (a)(14) each may be recorded 
from a single source. 

(2) Commensurate with the capacity 

of the recording system, all additional 
parameters for which information 
sources are installed and which are 
connected to the recording system, 
must be recorded within the ranges, ac-
curacies, resolutions, and sampling in-
tervals specified in Appendix E of this 
part by August 20, 2001. 

(e) For all turbine-engine-powered 

transport category airplanes that are 
manufactured after August 18, 2000— 

(1) The parameters listed in para-

graph (a) (1) through (57) of this section 
must be recorded within the ranges, ac-
curacies, resolutions, and recording in-
tervals specified in Appendix E of this 
part. 

(2) Commensurate with the capacity 

of the recording system, all additional 
parameters for which information 
sources are installed and which are 
connected to the recording system, 
must be recorded within the ranges, ac-
curacies, resolutions, and sampling in-
tervals specified in Appendix E of this 
part. 

(3) In addition to the requirements of 

paragraphs (e)(1) and (e)(2) of this sec-
tion, all Boeing 737 model airplanes 
must also comply with the require-
ments of paragraph (n) of this section, 
as applicable. 

(f) For all turbine-engine-powered 

transport category airplanes manufac-
tured after August 19, 2002— 

(1) The parameters listed in para-

graphs (a)(1) through (a)(88) of this sec-
tion must be recorded within the 
ranges, accuracies, resolutions, and re-
cording intervals specified in Appendix 
E to this part. 

(2) In addition to the requirements of 

paragraphs (f)(1) of this section, all 
Boeing 737 model airplanes must also 
comply with the requirements of para-
graph (n) of this section. 

(g) Whenever a flight data recorder 

required by this section is installed, it 
must be operated continuously from 
the instant the airplane begins its 
takeoff roll until it has completed its 
landing roll. 

(h) Except as provided in paragraph 

(i) of this section, and except for re-
corded data erased as authorized in 
this paragraph, each certificate holder 
shall keep the recorded data prescribed 
by this section, as appropriate, until 
the airplane has been operated for at 
least 25 hours of the operating time 
specified in § 121.359(a) of this part. 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 accord-
ance with this paragraph must be of 
the oldest recorded data accumulated 
at the time of testing. Except as pro-
vided in paragraph (i) of this section, 
no record need to be kept more than 60 
days. 

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

currence that requires immediate noti-
fication of the National Transportation 
Safety Board under 49 CFR 830 of its 
regulations and that results in termi-
nation of the flight, the certificate 
holder shall remove the recorder from 
the airplane and keep the recorder data 
prescribed by this section, as appro-
priate, for at least 60 days or for a 
longer period upon the request of the 
Board or the Administrator. 

(j) Each flight data recorder system 

required by this section must be in-
stalled in accordance with the require-
ments of § 25.1459(a) (except paragraphs 
(a)(3)(ii) and (7)), (b), (d) and (e) of this 
chapter. A correlation must be estab-
lished between the values recorded by 
the flight data recorder and the cor-
responding values being measured. The 
correlation must contain a sufficient 

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