MD-11 Flight Crew Operations Manual
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Emergency Equipment -
Controls and Displays
Emer.30.7
Emergency Lighting Controls
1. EMER LT Switch
OFF - Normal for ground operations. Emergency lights will not illuminate.
Batteries will charge when power is available. EMER LTS DISARM alert
will be displayed on EAD.
ARM - Normal for flight. Allows emergency lights to illuminate
automatically if normal electrical power is interrupted. Connects batteries to
charging system if power is available.
ON - For ground test. Illuminates emergency lights as long as power is
available. EMER LTS DISARM alert is displayed on EAD.
2. EMER LT TEST Button
When this button is pushed:
• Emergency lights illuminate.
• Integral batteries are tested under load.
• EMER LTS TEST PASS alert is displayed on EAD when all circuits and
batteries are satisfactory.
If EMER LTS TST PASS does not appear, batteries with abnormal voltage
can be identified on the SD STATUS page MAINT column by pushing the
button again.
3. Emergency LIGHTS Switch (Cabin Attendant Panel)
LIGHTS - Overrides cockpit EMER LT switch OFF and ARM positions and
turns on all emergency lights.
OFF - All emergency lights are under control of the EMER LT switch in the
cockpit. Switch is guarded and lockwired in this position.
LIGHTS
OFF
1
FORWARD OVERHEAD PANEL
EMER LT
OFF
ON
ARM
TEST
2
3
FORWARD LEFT CABIN
ATTENDANT PANEL
November 16, 2009
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