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 UNLOCK Function: If one Flight Crew Member leaves the Cockpit while the Aircraft is moving a Cabin Crew Member has to replace him and be present in the Cockpit in order to open the Door from inside if needed.
 LOCK Function: If one Flight Crew Member leaves the Cockpit while the Aircraft is moving a Cabin Crew Member has to replace him and be present in the Cockpit in order to open the Door from inside if needed. CDR and CC have to agree upon the use of interphone in case of need to open the Cockpit Door.
 
REPAIR INTERVAL C 1 NUMBER INSTALLED
ITEM   0 NUMBER REQUIRED FOR DISPATCH
    REMARKS OR EXCEPTIONS
May be inoperative provided primary locking system operates normally.
52-51-4 Boeing/C & D Aerospace
Enhanced Flight Deck Security Door Dead Bolt    

EICAS STATUS MESSAGES
None
PLACARD
As appropriate
 
REPAIR INTERVAL A 2 NUMBER INSTALLED
ITEM   0 NUMBER REQUIRED FOR DISPATCH
    REMARKS OR EXCEPTIONS
May be inoperative provided:
 Panels are in the latched position, and
 Repairs are made within two flight days.
52-51-8 Boeing/C&D Aerospace
Enhanced Flight Deck Security Door pressure Relief Panels    

EICAS STATUS MESSAGES
None
PLACARD
As appropriate
 

NUMBER INSTALLED
1 NUMBER REQUIRED FOR DISPATCH
REMARKS OR EXCEPTIONS
0 (M+P) May be inoperative provided associated
door(s) is verified closed, latched, and locked before each departure.

 
EICAS STATUS MESSAGES
MN CARGO DR SYS EICAS SCC
PLACARD
Affected light on Pilot’s Overhead Panel - INOP
Near EICAS - DOOR INDICATION INOP
MAINTENANCE (M)
Visually check that all affected doors are closed and locked.
1. No. 1, 2, and 4 (L or R) Passenger Doors:
 Verify door is faired with the fuselage.
 Verify that all exterior/interior door handles are in the proper closed/faired position.
 Verify the girt bar mechanism is armed:
 Check that the mode selector lever are at ENGAGED.
 Check that the Armed Condition Indicator above the interior handle is extended.
 Check that the girt bar engaged warning light above the door is illuminated.
NOTE: If the girt bar engaged warning light is not illuminated or slide Armed Condition Indicator is not extended, verify girt bar engagement per the procedures described in MEL item 25-66-5.
2. No. 3 (L or R) Emergency Exit Doors or Overwing Emergency Exit Hatches:
 Verify door is faired with the fuselage.
 Verify that all exterior/interior door handles are in the proper closed/faired position.
 For No. 3 Emergency Exit Door, verify vent door is closed.
　
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