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DOOR UGHT IllUMINATED
Illumination of the red DOOR light indicates that
one
or
more of the cabin
entry door locking pins may not be
fully
engaged,
or
the cabin entry door
actuator hook(s) are
still
engaged. During
flight,
the door should not be ap-
proached
if
the red DOOR light is illuminated; however, while
on
the
ground, door latch pin engagement may be
visually
verified. The cabin entry
door has
10
latch pins.
On
aircraft with a 36-inch cargo door, the six pins
on the upper portion can be viewed through ports
in
the door upholstery.
On
aircraft with a 24-inch executive door, only
one
of the six pins on the
upper
portion can be viewed through a port in the door upholstery. Two
pins in the lower portion may
be
viewed by opening the inspection doors
on
the step
to
reveal
the
pin mechanism. Ensure that white lines
on
door
structure align with white lines on latch pins. Two latch pins located
at
the
upper!lower door interface, are visible through the upholstery
gap
at
the
interface and
do
not
have white lines. If
all
latch pins are
fully
engaged
and
door actuator hook(s) are disengaged, the most probable cause of
an
illumi-
nated DOOR light is a latch pin switch malfunction.
If
light
was
accompanied by evidence
of
door failure:
Door failure may be indicated
by
loud noise, pressuriza-
tion
leak,
or
rumble emanating from door area.
Do
not
approach door.
1.
FASTEN SEAT
BELT
Switch - On.
2.
Cabin Altitude - Up
to
maximum possible.
_~
• Aircraft 35-067 thru 35-112 except 35-107 and
NOTE
36-018 thru 36-031, increasing cabin altitude
to
- 9,000 feet
will
reduce differential pressure while avoid-
ing deactivation of the automatic pressurization
system .
• Aircraft 35-107, 35-113 & subsequent and
36-032 & subsequent, increaSing cabin altitude
to
9,000 feet
will
reduce differential pressure while
avoiding actuation of the emergency pressurization
system.
The
amber CAB
ALT
light
will
illuminate.
3. Airspeed - Reduce.
4.
Establish descent.
5.
Land
as
soon as practical.
If
light
was
not
accompanied by evidence
of
door failure:
Do
not approach door.
1.
FASTEN SEAT
BELT
Switch - On.
2.
Continue
flight.
The
most probable cause
is
a latch pin switch
malfunction.
3-30
FAA
APPROVED
4-30-76
REISSUED
2-25-81, CHANGE
12
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