A. Energize the ground service network
(Ref. TASK 24-42-00-861-001).
Subtask 21-26-00-941-100
B. Safety Precautions
(1) Make sure that the throttle control levers of the engines 1 and 2 are in the TO/GA position (TAKEOFF mode).
Subtask 21-26-00-010-067
C. Get Access
(1) Put the adjustable access platform(s) in position at the access doors 812, 822 and 824.
(2) Open the access doors 812, 822 and 824.
4. Procedure_________
(Ref. Fig. 201/TASK 21-26-00-991-007)
R **ON A/C 001-049, 051-058, 101-101,
Subtask 21-26-00-040-057
A. Deactivation of the Valves
R R R R R WARNING : DO NOT USE YOUR FINGERS TO SET THE SWITCHES TO THE "ON"_______ POSITION. USE A STICK, AND BE VERY CAREFUL. THE AVIONICS EQUIPMENT VENTILATION COMPUTER (AEVC) WILL POSSIBLY PUT THE VALVES 22HQ AND 15HQ DIRECTLY IN THE CLOSED POSITION AND THEY WILL CUT YOUR FINGERS.
CAUTION : DO NOT USE FORCE TO TURN THE HANDLE. THERE ARE SHEAR PINS IN_______ THE HANDLE. IF YOU APPLY FORCE TO THE HANDLE WHEN THE FLAP IS IN THE FULLY OPEN OR CLOSED POSITION, THE SHEAR PINS WILL BREAK.
R
NOTE : It is possible that the measurement of the skin temperature is____ different from the Outside Air Temperature (OAT). Thus, it is possible that the skin air outlet-valves are in the open position and the OAT is lower than 12 deg.C (53.60 deg.F) (at the same time). In this condition, the valves can stay in the open position.
When the aircraft is in the ground configuration with an Outside Air Temperature (OAT) more than 12 deg.C (53.60 deg.F), do these operations :
(1) On the skin air outlet-valve (22HQ) :
(a)
Push the PUSH latch to release the handle.
(b)
Pull the handle to engage the mechanism.
(c)
Fold out the handle.
(d)
Set the deactivation switch to OFF.
(e)
Turn the handle counterclockwise to fully open the main flap.
(f)
Fold, stow and latch the handle. NOTE : When the main flap is open, the integrated auxiliary flap
____
is closed.
(2)
On the skin air inlet-valve (15HQ) :
(a)
Push the PUSH latch to release the handle.
(b)
Pull the handle to engage the mechanism.
(c)
Fold out the handle.
(d)
Set the deactivation switch to OFF.
(e)
Turn the handle clockwise to fully open the flap.
(f)
Fold, stow and latch the handle.
(3)
On the skin-exchanger isolation valve (24HQ) :
(a)
Disconnect the connector 24HQ-A from the valve 24HQ.
(b)
Put blanking caps on the disconnected electrical connectors.
(c)
Keep the electrical cable with its connector near the valve and attach them with an adhesive tape.
(d)
Fully close the valve (24HQ) with the manual mechanism (F
position).
