Emergency (EMER) EXIT LIGHTS NOT ARMED Light
Illuminated (amber) – EMER EXIT LIGHTS switch not in ARMED position.
NO SMOKING Switch YA626, YC411, YC413
OFF – the NO SMOKING signs are not illuminated.
AUTO – the NO SMOKING signs are illuminated or extinguished automatically
with reference to airplane configuration (refer to the Lighting System Description
section).
ON – the NO SMOKING signs are illuminated.
NO SMOKING Switch YA613, YA686 - YC154, YD651 - YK104
The No Smoking signs are permanently illuminated. The No Smoking switch is placarded INOP.
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Airplane General, Emergency Equipment, Doors, Windows -Controls and Indicators
737 Flight Crew Operations Manual
FASTEN BELTS Switch
OFF – the FASTEN SEAT BELTS and RETURN TO SEAT signs are not
illuminated.
AUTO – the FASTEN SEAT BELTS and RETURN TO SEAT signs are
illuminated or extinguished automatically with reference to airplane configuration
(refer to the Lighting System Description section).
ON – the FASTEN SEAT BELTS and RETURN TO SEAT signs are illuminated.
Passenger Cabin
Passenger Cabin Emergency Lights Switch (guarded)
On – illuminates all emergency lights and bypasses flight deck control.
Emergency Locator YC411, YC413, YK101 - YK104
Emergency Locator Transmitter
Emergency Locator Transmitter Light
Illuminated (amber) – ELT has been activated and is simultaneously transmitting on 121.5, 243.0 and 406.0 mhz.
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Airplane General, Emergency Equipment, Doors, Windows -Controls and Indicators
737 Flight Crew Operations Manual
2 Emergency Locator Transmitter Switch
ARM – (guarded position) ELT transmits automatically when it reaches its preset
G–Load limit.
ON – manually activates the ELT.
Doors Flight Deck Door
1
FOR GROUND USE ONLY DEADBOLT POSITIONS
1
UNLOCKED
LOCKED KEY OPERABLE
LOCKED KEY INOPERABLE
3
2
2
3
AFT
FLIGHT DECK DOOR
1 Deadbolt and Deadbolt Placard
2 Release Pins
Pull pins inward - manually separates decompression panel from a jammed door to allow panel opening and egress.
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Airplane General, Emergency Equipment, Doors, Windows -Controls and Indicators
737 Flight Crew Operations Manual
Decompression Panel
Provides emergency egress path and automatically opens during cabin decompression.
Flight Deck Emergency Access Panel
Keypad
Push - enters 3 to 8 digit emergency access code by pressing numeric then "ENT" keys. Entry of correct emergency access code sounds flight deck chime.
Access Lights
Illuminated (red) - door locked or Flight Deck Access System switch OFF.
Illuminated (amber) - correct emergency access code entered.
Illuminated (green) - door unlocked.
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Airplane General, Emergency Equipment, Doors, Windows -Controls and Indicators 737 Flight Crew Operations Manual
Flight Deck Access System Switch
Flight Deck Access System Switch
OFF - removes electrical power from door lock.
NORM (Normal) - flight deck access system configured for flight.
Flight Deck Door Lock Panel
LOCK FAIL Light
Illuminated (amber) - Flight Deck Door Lock selector in AUTO and door lock has failed or Flight Deck Access System switch is OFF.
AUTO Unlock (UNLK) Light
Illuminated (amber) - correct emergency access code entered in keypad. AUTO UNLK light flashes and continuous chime sounds before timer expires and door unlocks.
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Airplane General, Emergency Equipment, Doors, Windows -Controls and Indicators
737 Flight Crew Operations Manual
Flight Deck (FLT DK) Door Lock Selector
Spring loaded to AUTO. Selector must be pushed in to rotate from AUTO to
UNLKD. Selector must not be pushed in to rotate from AUTO to DENY.
UNLKD - door unlocked while selector in UNLKD.
AUTO - door locked. Allows door to unlock after entry of emergency access code
and expiration of timer, unless crew takes action.
DENY - rejects keypad entry request and prevents further emergency access code
entry for a time period.
Exterior Door Annunciator Lights
YA613 - YA722
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