AIR CONDITIONING SUPPLY Switch (Affected System)....AUTO
IF Supply Pressure Remains at Zero:
AIR CONDITIONING SUPPLY Switch (Affected System) .................................................................. OFF
Pack is inoperative.
* * * *
IF Supply Pressure Increasing:
Temperature Selector (Affected System)............... AS DESIRED

Rotate TEMP selector to desired position. Monitor VALVE position indicator for response. If no response is observed, take over manual operation of system.
* * * *
MD-80 Sec. 3 Page 11
Flight Manual Continental Rev. 05/15/95 #23

TRANSFER LOCKOUT AND STANDBY ON LIGHTS ON

Note:  In flight, do not push to reset the TRANSFER LOCKOUT and STDBY ON lights if both are on.
STDBY ON light indicates that pressurization has automatically
transferred to standby mode.
TRANSFER LOCKOUT light indicates that the pressurization
automatic transfer feature is locked out.
System Selector Switch ..............................STDBY THEN PRIMARY

IF  The STDBY ON Light Remains On:

Do not reset the lights. No further action is required. Continue the flight on the standby system. The pressurization system is now
OR limited to one system with no standby capability.
* * * *

IF  The STDBY ON Light Is Out:
TRANSFER LOCKOUT Light ....................... PUSH TO RESET

IF  The TRANSFER LOCKOUT Light Remains On:

No further action is required. The pressurization system is now
limited to one system with no standby capability.
OR
* * * *

IF  The TRANSFER LOCKOUT Light Is Out:
Continue normal operations.

* * * *
Sec. 3 Page 12 MD-80
Rev. 05/15/95 #23 Continental Flight Manual

TRANSFER LOCKOUT LIGHT ON

System Selector Switch ..............................STDBY THEN PRIMARY
TRANSFER LOCKOUT Light .............................. PUSH TO RESET

TRANSFER LOCKOUT Light Is Out:
Continue normal operation.

* * * *
IF TRANSFER LOCKOUT Light Is Still On:
No further action is required. Pressurization system is now limited to one normal system with no standby capability.
* * * *
MD-80 Sec. 3 Page 13
Flight Manual Continental Rev. 08/01/97 #27

APU NO ROTATION, NO START, HUNG START

IF APU PERCENT RPM Gauge Indicates No Rotation:

DC VOLTS / AMPS Meter...............................................CHECK

Less Than 22 Volts (After Applying APU Starter Load):
Discontinue start attempt. Contact maintenance.
* * * *
More Than 22 Volts (After Applying APU Starter Load):
APU MASTER Switch ..................................................... OFF APU CONTROL CB (Battery Bus)......RESET IF TRIPPED APU DOOR CONTROL CB (U39).......RESET IF TRIPPED GEAR HDL RELEASE Button .................................CHECK
IF  GEAR HDL RELEASE Button is Retracted:

OR
OR
~

Call maintenance. Retracted button indicates an extended nose strut and failure of ground shift mechanism to go into ground mode.
* * * *

IF  GEAR HDL RELEASE Button is Extended:
APU MASTER SWITCH............................................ON

IF  APU Doors Are Open:
Attempt another start.

OR
* * * *

IF  APU Doors Are Closed:
APU DOORS Switch........ NON-RAM 24 SECONDS MINIMUM, THEN OFF
Attempt another start Note: After APU shutdown, move APU DOORS doors switch to AUTO to close APU doors.
* * * *

Sec. 3 Page 14 MD-80
Rev. 08/01/97 #27 Continental Flight Manual

IF  APU PERCENT RPM Gauge Stabilized Less Than Idle RPM (No Start or Hung Start):
APU MASTER Switch ............................................................ OFF
Applicable Fuel Pump Switch...................................................ON

 - - - - AFTER REQUIRED COOLING TIME- - - - -
Attempt a second start. If start not successful, call maintenance.
* * * *
APU EGT HIGH

Note:  This procedure is to be used when no-load idle EGT is stabilized considerably above idle values (200-400.C) when APU AIR switch is on and all pneumatic powered systems are off.
Normally, idle EGT will rise momentarily when APU bleed air valve is opened until pneumatic ducting is pressurized, then return to original no-load value.
If EGT remains high, the most probable cause is a pneumatic duct leak.
APU AIR Switch ................................................................................... OFF
APU MASTER Switch..........................................................................OFF

Call maintenance.
* * * *
MD-80 Sec. 3 Page 15
　
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