Federal Administration, DOT § 91.607

plus the length of the stopway (if (1) For each additional floor-level present); and exit at least 24 inches wide by 48 inches (2) The takeoff distance is no greater high, with an unobstructed 20-inch- than the length of the plus the wide access aisleway between the exit length of the clearway (if present); and and the main passenger aisle, 12 addi- (3) The takeoff run is no greater than tional occupants. the length of the runway. (2) For each additional window exit [Doc. No. 18334, 54 FR 34318, Aug. 18, 1989, as located over a wing that meets the re- amended by Amdt. 91–256, 63 FR 8321, Feb. 18, quirements of the airworthiness stand- 1998] ards under which the airplane was type certificated or that is large enough to § 91.607 Emergency exits for airplanes inscribe an ellipse 19×26 inches, eight carrying passengers for hire. additional occupants. (a) Notwithstanding any other provi- (3) For each additional window exit sion of this chapter, no person may op- that is not located over a wing but that erate a large airplane (type certificated otherwise complies with paragraph under the Civil Air Regulations effec- (b)(2) of this section, five additional oc- tive before April 9, 1957) in passenger- carrying operations for hire, with more cupants. than the number of occupants— (4) For each airplane having a ratio (1) Allowed under Civil Air Regula- (as computed from the table in para- tions § 4b.362 (a), (b), and (c) as in effect graph (a) of this section) of maximum on December 20, 1951; or number of occupants to number of (2) Approved under Special Civil Air exits greater than 14:1, and for each Regulations SR–387, SR–389, SR–389A, airplane that does not have at least or SR–389B, or under this section as in one full-size, door-type exit in the side effect. of the in the rear part of the However, an airplane type listed in the cabin, the first additional exit must be following table may be operated with a floor-level exit that complies with up to the listed number of occupants paragraph (b)(1) of this section and (including crewmembers) and the cor- must be located in the rear part of the responding number of exits (including cabin on the opposite side of the fuse- emergency exits and doors) approved lage from the main entrance door. for the emergency exit of passengers or However, no person may operate an with an occupant-exit configuration airplane under this section carrying approved under paragraph (b) or (c) of more than 115 occupants unless there is this section. such an exit on each side of the fuse- lage in the rear part of the cabin. Maximum Corresponding number of oc- number of (c) No person may eliminate any ap- Airplane type cupants in- exits author- cluding all ized for pas- proved exit except in accordance with crewmembers senger use the following:

B–307 ...... 61 4 (1) The previously authorized max- B–377 ...... 96 9 imum number of occupants must be re- C–46 ...... 67 4 duced by the same number of addi- CV–240 ...... 53 6 CV–340 and CV–440 ...... 53 6 tional occupants authorized for that DC–3 ...... 35 4 exit under this section. DC–3 (Super) ...... 39 5 (2) Exits must be eliminated in ac- DC–4 ...... 86 5 DC–6 ...... 87 7 cordance with the following priority DC–6B ...... 112 11 schedule: First, non-over-wing window L–18 ...... 17 3 exits; second, over-wing window exits; L–049, L–649, L–749 ...... 87 7 L–1049 series ...... 96 9 third, floor-level exits located in the M–202 ...... 53 6 forward part of the cabin; and fourth, M–404 ...... 53 7 floor-level exits located in the rear of Viscount 700 series ...... 53 7 the cabin. (b) Occupants in addition to those au- (3) At least one exit must be retained thorized under paragraph (a) of this on each side of the fuselage regardless section may be carried as follows: of the number of occupants.

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(4) No person may remove any exit test it or to test any communications that would result in a ratio of max- or electrical equipment installed in the imum number of occupants to approved ; exits greater than 14:1. (4) Ferry a newly acquired aircraft (d) This section does not relieve any from a place where possession of it was person operating under part 121 of this taken to a place where the re- chapter from complying with § 121.291. corder or voice recorder is to be installed; or § 91.609 Flight data recorders and (5) Operate an aircraft: cockpit voice recorders. (i) For not more than 15 days while (a) No holder of an air carrier oper- the and/or cockpit voice ating certificate or an operating cer- recorder is inoperative and/or removed tificate may conduct any operation for repair provided that the aircraft under this part with an aircraft listed maintenance records contain an entry in the holder’s operations specifica- that indicates the date of failure, and a tions or current list of aircraft used in placard is located in view of the pilot air transportation unless that aircraft to show that the flight recorder or complies with any applicable flight re- cockpit voice recorder is inoperative. corder and cockpit voice recorder re- (ii) For not more than an additional quirements of the part under which its 15 days, provided that the requirements certificate is issued except that the op- in paragraph (b)(5)(i) are met and that erator may— a certificated pilot, or a certificated (1) Ferry an aircraft with an inoper- person authorized to return an aircraft ative flight recorder or cockpit voice to service under § 43.7 of this chapter, recorder from a place where repair or certifies in the aircraft maintenance replacement cannot be made to a place records that additional time is required where they can be made; to complete repairs or obtain a replace- (2) Continue a flight as originally ment unit. planned, if the flight recorder or cock- (c)(1) No person may operate a U.S. pit voice recorder becomes inoperative civil registered, multiengine, turbine- after the aircraft has taken off; powered airplane or rotorcraft having a (3) Conduct an airworthiness flight passenger seating configuration, ex- test during which the flight recorder or cluding any pilot seats of 10 or more cockpit voice recorder is turned off to that has been manufactured after Octo- test it or to test any communications ber 11, 1991, unless it is equipped with or electrical equipment installed in the one or more approved flight recorders aircraft; or that utilize a digital method of record- (4) Ferry a newly acquired aircraft ing and storing data and a method of from the place where possession of it is readily retrieving that data from the taken to a place where the flight re- storage medium, that are capable of re- corder or cockpit voice recorder is to cording the data specified in appendix be installed. E to this part, for an airplane, or ap- (b) Notwithstanding paragraphs (c) pendix F to this part, for a rotorcraft, and (e) of this section, an operator of this part within the range, accuracy, other than the holder of an air carrier and recording interval specified, and or a commercial operator certificate that are capable of retaining no less may— than 8 hours of aircraft operation. (1) Ferry an aircraft with an inoper- (2) All airplanes subject to paragraph ative flight recorder or cockpit voice (c)(1) of this section that are manufac- recorder from a place where repair or tured before April 7, 2010, by April 7, replacement cannot be made to a place 2012, must meet the requirements of where they can be made; § 23.1459(a)(7) or § 25.1459(a)(8) of this (2) Continue a flight as originally chapter, as applicable. planned if the flight recorder or cock- (3) All airplanes and rotorcraft sub- pit voice recorder becomes inoperative ject to paragraph (c)(1) of this section after the aircraft has taken off; that are manufactured on or after (3) Conduct an airworthiness flight April 7, 2010, must meet the flight data test during which the flight recorder or recorder requirements of § 23.1459, cockpit voice recorder is turned off to § 25.1459, § 27.1459, or § 29.1459 of this

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