TM 1-1510-253-CL
CABIN DOOR or CARGO DOOR Light
When airplane is un-pressurized, the pas-
senger entrance door safety lock will not
be engaged; it will be possible to open
door in flight. Opening door in flight
could result in personnel injury or dam-
age to equipment.
Prior to Takeoff:
1. Do Not Takeoff
In Flight:
1. Crew & Passengers -- REMAIN Clear of
Affected Door
2. SEAT BELT Sign -- ON
3. Cabin Differential Pressure -- Reduce
4. Descend -- As Required
5. Land -- As Soon As Practicable
AIR CONDITIONING SYSTEM
MALFUNCTION
1. Warm or Hot air from cold air outlets:
a. BLEED AIR Switches -- OFF One
at a Time
(Isolate faulty bleed air system and
leave off)
b. BLEED AIR Switch (unaffected side)
-- ON
2. Automatic Temperature Control Fails
a. TEMP CONTROLS -- MANUAL
b. Control cabin temperature by
alternately selecting off and manual
positions.
E-43