MIL-PRF-85676A(AS)
3.3.2 Fixed wing and lighter-than-air aircraft.
3.3.2.1 General emergency illumination. White floor light shall be provided as
applicable:
a. Illumination provided by the EELS conforming to 3.4.1.2.1.a shall be not less than
0.54 lux (0.05 ft-c).
b. Average illumination provided by the EELS conforming to 3.4.1.2.1.b shall be not less
than 0.54 lux (0.05 ft-c) determined from measurements made every 40 in (102 cm) along the
center of the main passenger aisle(s) at seat armrest height.
c. Illumination provided by the EELS conforming to 3.4.1.2.1.c shall be not less than
0.22 lux (0.02 ft-c) measured along a line that is within 6 in (15 cm) of and parallel to the floor
and centered on the passenger evacuation path.
3.3.2.2 Exit signs. The lighted background-to-letter contrast shall be not less than 10:1.
This value is also applicable to symbols, arrows and instructional placards. The background
luminance of lighted areas of exit signs conforming to 3.4.1.2.2.2.a. and b. shall be not less than
25 ft lamberts (86 candela (cd)/m2) and the ratio of maximum to minimum luminance shall be
not greater than 3:1. The initial luminance of the exit locator signs per 3.4.1.2.2.2.c. and d shall
be not less than 0.38 ft lambert (1.3 cd/m2). For self-illuminated signs, the nonlighted contrast
ratio under ambient light between the intelligence and background shall be not less than 3.0 (see
6.7).
3.3.2.3 Floor proximity escape path marking. The floor proximity emergency escape
path marking shall enable each passenger in total darkness to:
a. Visually identify the emergency escape path along the cabin aisle floor to the first exit
or pair of exits forward and aft of the seat after leaving the passenger seat.
b. Identify each exit from the emergency escape path by reference only to markings and
visual features not more than 4 feet above the cabin floor.
3.3.3 Fixed wing or rotary wing aircraft configured to carry only passengers. The light
element performance of aircraft that are fixed or rotary wing aircraft configured used to carry
only passengers shall conform to 3.3.1 and 3.3.2.
3.4 Physical characteristics.
3.4.1 Geometry.
3.4.1.1 Rotary wing and tilt-rotor aircraft. The components of the lighting subassembly
shall be of minimum size and meet the light element requirements of 3.3. The width of the light
element shall be not greater than one inch. All light elements and electrical leads for a single
model of aircraft shall be of a standard length to facilitate interchangeability. The length of the
light element shall be long enough to enable arrangement in an inverted "U" configuration above
the top and along the sides of a single light element emergency escape exit. (See 6.8)
4
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business