Federal Aviation Administration, DOT § 121.344a this chapter. A correlation must be es- craft Corporation Electra 10–E, Lock- tablished between the values recorded heed Aircraft Corporation Electra L– by the flight data recorder and the cor- 188, Lockheed Martin Model 382 (L–100) responding values being measured. The Hercules, Maryland Air Industries, Inc. correlation must contain a sufficient F27, Mitsubishi Heavy Industries, Ltd. number of correlation points to accu- YS–11, Short Bros. Limited SD3–30, rately establish the conversion from Short Bros. Limited SD3–60. the recorded values to engineering (m) All aircraft subject to the re- units or discrete state over the full op- quirements of this section that are erating range of the parameter. Except manufactured on or after April 7, 2010, for airplanes having separate altitude must have a digital flight data recorder and airspeed sensors that are an inte- installed that also— gral part of the flight data recorder (1) Meets the requirements of system, a single correlation may be es- § 25.1459(a)(3), (a)(7), and (a)(8) of this tablished for any group of airplanes— chapter; and (1) That are of the same type; (2) Retains the 25 hours of recorded (2) On which the flight recorder sys- information required in paragraph (h) tem and its installation are the same; of this section using a recorder that and meets the standards of TSO–C124a, or (3) On which there is no difference in later revision. the type design with respect to the in- (n) In addition to all other applicable stallation of those sensors associated requirements of this section, all Boeing with the flight data recorder system. 737 model airplanes manufactured after Documentation sufficient to convert August 18, 2000 must record the param- recorded data into the engineering eters listed in paragraphs (a)(88) units and discrete values specified in through (a)(91) of this section within the applicable appendix must be main- the ranges, accuracies, resolutions, and tained by the certificate holder. recording intervals specified in Appen- (k) Each flight data recorder required dix M to this part. Compliance with by this section must have an approved this paragraph is required no later device to assist in locating that re- than February 2, 2011. corder under water. (l) The following airplanes that were [Doc. No. 28109, 62 FR 38378, July 17, 1997; 62 FR 48135, Sept. 12, 1997, as amended by Amdt. manufactured before August 18, 1997 121–300, 68 FR 42936, July 18, 2003; 68 FR 50069, need not comply with this section, but Aug. 20, 2003; Amdt. 121–338, 73 FR 12565, Mar. must continue to comply with applica- 7, 2008; Amdt. 121–342, 73 FR 73178, Dec. 2, ble paragraphs of § 121.343 of this chap- 2008; Amdt. 121–338, 74 FR 32800, July 9, 2009] ter, as appropriate: (1) Airplanes that meet the State 2 § 121.344a Digital flight data recorders noise levels of part 36 of this chapter for 10–19 seat airplanes. and are subject to § 91.801(c) of this (a) Except as provided in paragraph chapter, until January 1, 2000. On and (f) of this section, no person may oper- after January 1, 2000, any Stage 2 air- ate under this part a turbine-engine- plane otherwise allowed to be operated powered airplane having a passenger under Part 91 of this chapter must seating configuration, excluding any comply with the applicable flight data required crewmember seat, of 10 to 19 recorder requirements of this section seats, that was brought onto the U.S. for that airplane. register after, or was registered outside (2) British Aerospace 1–11, General the United States and added to the op- Dynamics Convair 580, General Dynam- erator’s U.S. operations specifications ics Convair 600, General Dynamics after, October 11, 1991, unless it is Convair 640, deHavilland Aircraft Com- equipped with one or more approved pany Ltd. DHC–7, Fairchild Industries flight recorders that use a digital FH 227, Fokker F–27 (except Mark 50), method of recording and storing data F–28 Mark 1000 and Mark 4000, Gulf- and a method of readily retrieving that stream Aerospace G–159, Jetstream 4100 data from the storage medium. On or Series, Lockheed Aircraft Corporation before August 20, 2001, airplanes Electra 10–A, Lockheed Aircraft Cor- brought onto the U.S. register after Oc- poration Electra 10–B, Lockheed Air- tober 11, 1991, must comply with either 135 VerDate Mar<15>2010 20:09 Feb 03, 2014 Jkt 232048 PO 00000 Frm 00145 Fmt 8010 Sfmt 8010 Q:\14\14V3.TXT ofr150 PsN: PC150 § 121.344a 14 CFR Ch. I (1–1–14 Edition) the requirements in this section or the this part, must be recorded within the applicable paragraphs in § 135.152 of this ranges, accuracies, resolutions, and re- chapter. In addition, by August 20, 2001. cording intervals specified in Appendix (1) The parameters listed in M of this part. §§ 121.344(a)(1) through 121.344(a)(18) of (2) Commensurate with the capacity this part must be recorded with the of the recording system, all additional ranges, accuracies, and resolutions parameters listed in § 121.344(a) of this specified in Appendix B of part 135 of part for which information sources are this chapter, except that— installed and which are connected to (i) Either the parameter listed in the recording system, must be recorded § 121.344 (a)(12) or (a)(15) of this part within the ranges, accuracies, resolu- must be recorded; either the param- tions, and sampling intervals specified eters listed in § 121.344(a)(13) or (a)(16) in Appendix M of this part by August of this part must be recorded; and ei- 20, 2001. ther the parameter listed in (c) For all turbine-engine-powered § 121.344(a)(14) or (a)(17) of this part airplanes having a passenger seating must be recorded. configuration, excluding any required (ii) For airplanes with more than two crewmember seats, of 10 to 19 seats, engines, the parameter described in that are manufactured after August 19, § 121.344(a)(18) of this part must also be 2002, the parameters listed in recorded if sufficient capacity is avail- § 121.344(a)(1) through (a)(88) of this able on the existing recorder to record part must be recorded within the that parameter; ranges, accuracies, resolutions, and re- (iii) Parameters listed in cording intervals specified in Appendix §§ 121.344(a)(12) through 121.344(a)(17) of M of this part. this part each may be recorded from a (d) Each flight data recorder system single source; required by this section must be in- (iv) Any parameter for which no stalled in accordance with the require- value is contained in Appendix B of ments of § 23.1459(a) (except paragraphs part 135 of this chapter must be re- (a)(3)(ii) and (6)), (b), (d) and (e) of this corded within the ranges, accuracies, chapter. A correlation must be estab- and resolutions specified in Appendix lished between the values recorded by M of this part. the flight data recorder and the cor- (2) Commensurate with the capacity responding values being measured. The of the recording system (FDAU or correlation must contain a sufficient equivalent and the DFDR), the param- number of correlation points to accu- eters listed in §§ 121.344(a)(19) through rately establish the conversion from 121.344(a)(22) of this part also must be the recorded values to engineering recorded within the ranges, accuracies, units or discrete state over the full op- resolutions, and recording intervals erating range of the parameter. A sin- specified in Appendix B of part 135 of gle correlation may be established for this chapter. any group of airplanes— (3) The approved flight recorder re- (1) That are of the same type; quired by this section must be installed (2) On which the flight recorder sys- as soon as practicable, but no later tem and its installation are the same; than the next heavy maintenance and check or equivalent after August 18, (3) On which there is no difference in 1999. A heavy maintenance check is the type design with respect to the in- considered to be any time an airplane stallation of those sensors associated is scheduled to be out of service for 4 with the flight data recorder system. more days and is scheduled to include Correlation documentation must be access to major structural components. maintained by the certificate holder. (b) For a turbine-engine-powered air- (e) All airplanes subject to this sec- planes having a passenger seating con- tion are also subject to the require- figuration, excluding any required ments and exceptions stated in crewmember seat, of 10 to 19 seats, that § 121.344(g) through (k) and § 121.346. are manufactured after August 18, 2000. (f) For airplanes that were manufac- (1) The parameters listed in tured before August 18, 1997, the fol- §§ 121.344(a)(1) through 121.344(a)(57) of lowing airplane types need not comply 136 VerDate Mar<15>2010 20:09 Feb 03, 2014 Jkt 232048 PO 00000 Frm 00146 Fmt 8010 Sfmt 8010 Q:\14\14V3.TXT ofr150 PsN: PC150 Federal Aviation Administration, DOT § 121.346 with this section, but must continue to (2) After January 1, 1992: The appro- comply with applicable paragraphs of priate class of TSO-C112 (Mode S). For § 135.152 of this chapter, as appropriate: purposes of paragraph (c) (2) of this sec- Beech Aircraft–99 Series, Beech Air- tion, ‘‘installation’’ does not include— craft 1300, Beech Aircraft 1900C, (i) Temporary installation of TSO- Construcciones Aeronauticas, S.A.