-
a failure of both engines, or

 -
a failure of one engine together with a failure of the electrical generator of the other engine

 -
a total AC failure.

 It is possible to extend the RAT into the airflow at any point in the flight envelope of the aircraft.
 NOTE : The automatic function only operates when the speed of the aircraft
____
 is more than 100 kts.

 The flight and maintenance crews can also extend the RAT from the flight compartment. It is only possible to retract the RAT when the aircraft is on the ground.
 2. Component Location
__________________
 **ON A/C 001-049, 051-061, 101-105, 201-203,
 (Ref. Fig. 002)
R **ON A/C 062-099, 106-149, 151-199, 204-299, 301-399, 401-499,
 (Ref. Fig. 002A)

 General Configuration (RAT Extended)
 Figure 001

R 1EFF : 001-049, 051-061, 101-105, 201-203, 1 29-22-00Page 2 1 1 Config-1 May 01/05 1 1 1CES 1

 Location of Mechanical Components
 Figure 002

R 1EFF : 001-049, 051-061, 101-105, 201-203, 1 29-22-00Page 3 1 1 Config-1 May 01/05 1 1 1CES 1

 Location of Mechanical Components
 Figure 002A

R 1EFF : 062-099, 106-149, 151-199, 204-299, 1 29-22-00Page 4 1301-399, 401-499, 1Config-1 Aug 01/05 1 1 1CES 1 **ON A/C 001-049, 051-061, 101-105, 201-203,

 (Ref. Fig. 003)

R **ON A/C 062-099, 106-149, 151-199, 204-299, 301-399, 401-499,
 (Ref. Fig. 003A)
 **ON A/C 001-049, 051-061, 101-105, 201-203,
 -------------------------------------------------------------------------------FIN | FUNCTIONAL DESIGNATION | PANEL|ZONE|ACCESS | ATA
 | | | | DOOR | REF. -------------------------------------------------------------------------------2140GE RAM AIR TURBINE 195 195BB 29-22-51 2027GE MODULE-RAT GND CHECK 195 195BB 29-22-52 2454GE JACK-EJECTION, RAT 195 197EB 29-22-53 2455GE MODULE-JACK CONTROL, RAT 195 197EB 29-22-54 2815GE CTL UNIT-RAT GND 197 197EB 29-22-12

R **ON A/C 062-099, 106-149, 151-199, 204-299, 301-399, 401-499,
 -------------------------------------------------------------------------------FIN | FUNCTIONAL DESIGNATION | PANEL|ZONE|ACCESS | ATA
 | | | | DOOR | REF. -------------------------------------------------------------------------------1GE EJECTION ACTUATOR 195 197EB 29-22-53 2GE RAM AIR TURBINE 195 195BB 29-22-51 3GE RAT CTL PANEL 197 197EB 29-22-12
 **ON A/C ALL
 3. System Description
__________________
R **ON A/C 062-099, 106-149, 151-199, 204-299, 301-399, 401-499,
 (Ref. Fig. 004, 005)

 Location of Electrical Components
 Figure 003

R 1EFF : 001-049, 051-061, 101-105, 201-203, 1 29-22-00Page 6 1 1 Config-1 May 01/05 1 1 1CES 1

R Electrical Components - Component Location Figure 003A
R 1EFF : 062-099, 106-149, 151-199, 204-299, 1 29-22-00Page 7 1301-399, 401-499, 1Config-1 Aug 01/05 1 1 1CES 1

 Leg Assembly, Ejection Jack, Hydraulic Pump and Components
 Figure 004

R 1EFF : 062-099, 106-149, 151-199, 204-299, 1 29-22-00Page 8 1301-399, 401-499, 1Config-1 Aug 01/05 1 1 1CES 1

 RAT - De-icing Device
 Figure 005

R 1EFF : 062-099, 106-149, 151-199, 204-299, 1 29-22-00Page 9 1301-399, 401-499, 1Config-1 Aug 01/05 1 1 1CES 1

R **ON A/C 001-049, 051-061, 101-105, 201-203,

 In an emergency the Blue auxiliary system supplies hydraulic power to the aircraft. The Blue auxiliary system can also supply the aircraft with electrical power through the constant speed motor/generator (CSM/G) 8XE (Ref. 24-24-00). The system supplies hydraulic power in less than 5 s from the time it gets the electrical command to extend the RAT. The hydraulic power available from the RAT (with the landing gear retracted) is sufficient to supply the flight controls and the CSM/G (for electrical power). When the landing gear is extended the effect of the nosegear on the airflow reduces the performance of the RAT. Because of that, the CSM/G is automatically switched off when the landing gear is extended. The aircraft gets its supply of electrical power from the batteries. Thus, the RAT has only to supply hydraulic power for the flight controls. The RAT is available and will operate through all of the flight envelope, but it will stall if the airspeed is less than 130 knots.
 The main components of the Blue auxiliary system are:
 -
the RAT,

 -
the leg assembly with its pivot,

 -
the hydraulic pump,

 -
the RAT actuator,

 -
the RAT ground retraction module,

 -
the RAT ground check module (GCM),

 -
the RAT control panel,

 -selector switches to extend the RAT from the flight compartment.
　
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