128 

14 CFR Ch. I (1–1–24 Edition) 

§ 121.314 

pilot’s permission, except that non-
transport category airplanes certifi-
cated after December 31, 1964, are not 
required to comply with this para-
graph. For airplanes equipped with a 
crew rest area having separate entries 
from the flightdeck and the passenger 
compartment, a door with such a lock-
ing means must be provided between 
the crew rest area and the passenger 
compartment. 

(g) A key for each door that sepa-

rates a passenger compartment from 
another compartment that has emer-
gency exit provisions. Except for 
flightdeck doors, a key must be readily 
available for each crewmember. Except 
as provided below, no person other 
than a person who is assigned to per-
form duty on the flightdeck may have 
a key to the flightdeck door. Before 
April 22, 2003, any crewmember may 
have a key to the flightdeck door but 
only if the flightdeck door has an in-
ternal flightdeck locking device in-
stalled, operative, and in use. Such 
‘‘internal flightdeck locking device’’ 
has to be designed so that it can only 
be unlocked from inside the flightdeck. 

(h) A placard on each door that is the 

means of access to a required passenger 
emergency exit, to indicate that it 
must be open during takeoff and land-
ing. 

(i) A means for the crew, in an emer-

gency to unlock each door that leads to 
a compartment that is normally acces-
sible to passengers and that can be 
locked by passengers. 

(j) After April 9, 2003, for airplanes 

required by paragraph (f) of this sec-
tion to have a door between the pas-
senger and pilot or crew rest compart-
ments, and for transport category, all- 
cargo airplanes that have a door in-
stalled between the pilot compartment 
and any other occupied compartment 
on January 15, 2002; 

(1) After April 9, 2003, for airplanes 

required by paragraph (f) of this sec-
tion to have a door between the pas-
senger and pilot or crew rest compart-
ments, 

(i) Each such door must meet the re-

quirements of § 25.795(a)(1) and (2) in ef-
fect on January 15, 2002; and 

(ii) Each operator must establish 

methods to enable a flight attendant to 
enter the pilot compartment in the 

event that a flightcrew member be-
comes incapacitated. Any associated 
signal or confirmation system must be 
operable by each flightcrew member 
from that flightcrew member’s duty 
station. 

(2) After October 1, 2003, for transport 

category, all-cargo airplanes that had a 
door installed between the pilot com-
partment and any other occupied com-
partment on or after January 15, 2002, 
each such door must meet the require-
ments of § 25.795(a)(1) and (2) in effect 
on January 15, 2002; or the operator 
must implement a security program 
approved by the Transportation Secu-
rity Administration (TSA) for the oper-
ation of all airplanes in that operator’s 
fleet. 

(k) Except for all-cargo operations as 

defined in § 110.2 of this chapter, for all 
passenger-carrying airplanes that re-
quire a lockable flightdeck door in ac-
cordance with paragraph (f) of this sec-
tion, a means to monitor from the 
flightdeck side of the door the area 
outside the flightdeck door to identify 
persons requesting entry and to detect 
suspicious behavior and potential 
threats. 

(l) For airplanes required by para-

graph (f) of this section to have a door 
between the passenger and pilot or 
crew rest compartments, and for pas-
senger-carrying transport category air-
planes that have a door installed be-
tween the pilot compartment and any 
other occupied compartment, that were 
manufactured after August 25, 2025, an 
installed physical secondary barrier 
(IPSB) that meets the requirements of 
§ 25.795(a)(4) of this chapter in effect on 
August 25, 2023. 

[Doc. No. 6258, 29 FR 19205, Dec. 31, 1964, as 
amended by Amdt. 121–5, 30 FR 6113, Apr. 30, 
1965; Amdt. 121–251, 60 FR 65931, Dec. 20, 1995; 
Amdt. 121–288, 67 FR 2127, Jan. 15, 2002; Amdt. 
121–299, 68 FR 42881, July 18, 2003; Amdt. 121– 
334, 72 FR 45635, Aug. 15, 2007; Amdt. 121–353, 
76 FR 7488, Feb. 10, 2011; Amdt. No. 121–389, 88 
FR 41308, June 26, 2023] 

§ 121.314 Cargo and baggage compart-

ments. 

For each transport category airplane 

type certificated after January 1, 1958: 

(a) Each Class C or Class D compart-

ment, as defined in § 25.857 of this Chap-
ter in effect on June 16, 1986 (see Ap-
pendix L to this part), that is greater 

129 

Federal Aviation Administration, DOT 

§ 121.317 

than 200 cubic feet in volume must 
have ceiling and sidewall liner panels 
which are constructed of: 

(1) Glass fiber reinforced resin; 
(2) Materials which meet the test re-

quirements of part 25, appendix F, part 
III of this chapter; or 

(3) In the case of liner installations 

approved prior to March 20, 1989, alu-
minum. 

(b) For compliance with paragraph 

(a) of this section, the term ‘‘liner’’ in-
cludes any design feature, such as a 
joint or fastener, which would affect 
the capability of the liner to safely 
contain a fire. 

(c) After March 19, 2001, each Class D 

compartment, regardless of volume, 
must meet the standards of §§ 25.857(c) 
and 25.858 of this Chapter for a Class C 
compartment unless the operation is 
an all-cargo operation in which case 
each Class D compartment may meet 
the standards in § 25.857(e) for a Class E 
compartment. 

(d) 

Reports of conversions and retrofits. 

(1) Until such time as all Class D com-
partments in aircraft operated under 
this part by the certificate have been 
converted or retrofitted with appro-
priate detection and suppression sys-
tems, each certificate holder must sub-
mit written progress reports to the 
FAA that contain the information 
specified below. 

(i) The serial number of each airplane 

listed in the operations specifications 
issued to the certificate holder for op-
eration under this part in which all 
Class D compartments have been con-
verted to Class C or Class E compart-
ments; 

(ii) The serial number of each air-

plane listed in the operations specifica-
tion issued to the certificate holder for 
operation under this part, in which all 
Class D compartments have been retro-
fitted to meet the fire detection and 
suppression requirements for Class C or 
the fire detection requirements for 
Class E; and 

(iii) The serial number of each air-

plane listed in the operations specifica-
tions issued to the certificate holder 
for operation under this part that has 
at least one Class D compartment that 
has not been converted or retrofitted. 

(2) The written report must be sub-

mitted to the responsible Flight Stand-

ards office by July 1, 1998, and at each 
three-month interval thereafter. 

[Doc. No. 28937, 63 FR 8049, Feb. 17, 1998, as 
amended by Docket FAA–2018–0119, Amdt. 
121–380, 83 FR 9173, Mar. 5, 2018] 

§ 121.315 Cockpit check procedure. 

(a) Each certificate holder shall pro-

vide an approved cockpit check proce-
dure for each type of aircraft. 

(b) The approved procedures must in-

clude each item necessary for flight 
crewmembers to check for safety be-
fore starting engines, taking off, or 
landing, and in engine and systems 
emergencies. The procedures must be 
designed so that a flight crewmember 
will not need to rely upon his memory 
for items to be checked. 

(c) The approved procedures must be 

readily usable in the cockpit of each 
aircraft and the flight crew shall follow 
them when operating the aircraft. 

§ 121.316 Fuel tanks. 

Each turbine powered transport cat-

egory airplane operated after October 
30, 1991, must meet the requirements of 
§ 25.963(e) of this chapter in effect on 
October 30, 1989. 

[Doc. No. 25614, 54 FR 40354, Sept. 29, 1989] 

§ 121.317 Passenger information re-

quirements, smoking prohibitions, 

and additional seat belt require-

ments. 

(a) Except as provided in paragraph 

(l) of this section, no person may oper-
ate an airplane unless it is equipped 
with passenger information signs that 
meet the requirements of § 25.791 of this 
chapter. Except as provided in para-
graph (l) of this section, the signs must 
be constructed so that the crew-
members can turn them on and off. 

(b) Except as provided in paragraph 

(l) of this section, the ‘‘Fasten Seat 
Belt’’ sign shall be turned on during 
any movement on the surface, for each 
takeoff, for each landing, and at any 
other time considered necessary by the 
pilot in command. 

(c) No person may operate an air-

plane on a flight on which smoking is 
prohibited by part 252 of this title un-
less either the ‘‘No Smoking’’ pas-
senger information signs are lighted 
during the entire flight, or one or more 
‘‘No Smoking’’ placards meeting the