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108 

14 CFR Ch. I (1–1–18 Edition) 

§ 121.310 

required, from a point in the passenger 
compartment that is readily accessible 
to a normal flight attendant seat; 

(ii) Have a means to prevent inad-

vertent operation of the manual con-
trols; and 

(iii) When armed or turned on at ei-

ther station, remain lighted or become 
lighted upon interruption of the air-
plane’s normal electric power. 

(2) Each light must be armed or 

turned on during taxiing, takeoff, and 
landing. In showing compliance with 
this paragraph a transverse vertical 
separation of the fuselage need not be 
considered. 

(3) Each light must provide the re-

quired level of illumination for at least 
10 minutes at the critical ambient con-
ditions after emergency landing. 

(4) Each light must have a cockpit 

control device that has an ‘‘on,’’ ‘‘off,’’ 
and ‘‘armed’’ position. 

(e)  Emergency exit operating handles. 

(1) For a passenger-carrying airplane 
for which the application for the type 
certificate was filed prior to May 1, 
1972, the location of each passenger 
emergency exit operating handle, and 
instructions for opening the exit, must 
be shown by a marking on or near the 
exit that is readable from a distance of 
30 inches. In addition, for each Type I 
and Type II emergency exit with a 
locking mechanism released by rotary 
motion of the handle, the instructions 
for opening must be shown by— 

(i) A red arrow with a shaft at least 

three-fourths inch wide and a head 
twice the width of the shaft, extending 
along at least 70° of arc at a radius ap-
proximately equal to three-fourths of 
the handle length; and 

(ii) The word ‘‘open’’ in red letters 1 

inch high placed horizontally near the 
head of the arrow. 

(2) For a passenger-carrying airplane 

for which the application for the type 
certificate was filed on or after May 1, 
1972, the location of each passenger 
emergency exit operating handle and 
instructions for opening the exit must 
be shown in accordance with the re-
quirements under which the airplane 
was type certificated. On these air-
planes, no operating handle or oper-
ating handle cover may continue to be 
used if its luminescence (brightness) 
decreases to below 100 microlamberts. 

(f)  Emergency exit access. Access to 

emergency exits must be provided as 
follows for each passenger-carrying 
transport category airplane: 

(1) Each passage way between indi-

vidual passenger areas, or leading to a 
Type I or Type II emergency exit, must 
be unobstructed and at least 20 inches 
wide. 

(2) For each Type I or Type II emer-

gency exit equipped with an assist 
means, there must be enough space 
next to the exit to allow a crewmember 
to assist in the evacuation of pas-
sengers without reducing the unob-
structed width of the passageway below 
that required in paragraph (f)(1) of this 
section. In addition, all airplanes man-
ufactured on or after November 26, 2008 
must comply with the provisions of 
§§ 25.813(b)(1), (b)(2), (b)(3) and (b)(4) in 
effect on November 26, 2004. However, a 
deviation from this requirement may 
be authorized for an airplane certifi-
cated under the provisions of part 4b of 
the Civil Air Regulations in effect be-
fore December 20, 1951, if the Adminis-
trator finds that special circumstances 
exist that provide an equivalent level 
of safety. 

(3) There must be access from the 

main aisle to each Type III and Type 
IV exit. The access from the aisle to 
these exits must not be obstructed by 
seats, berths, or other protrusions in a 
manner that would reduce the effec-
tiveness of the exit. In addition— 

(i) For an airplane for which the ap-

plication for the type certificate was 
filed prior to May 1, 1972, the access 
must meet the requirements of 
§ 25.813(c) of this chapter in effect on 
April 30, 1972; and 

(ii) For an airplane for which the ap-

plication for the type certificate was 
filed on or after May 1, 1972, the access 
must meet the emergency exit access 
requirements under which the airplane 
was type certificated; except that, 

(iii) After December 3, 1992, the ac-

cess for an airplane type certificated 
after January 1, 1958, must meet the re-
quirements of § 25.813(c) of this chapter, 
effective June 3, 1992. 

(iv) Contrary provisions of this sec-

tion notwithstanding, the Manager of 
the Transport Airplane Directorate, 
Aircraft Certification Service, Federal 

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