Subtask 27-26-51-010-057-A
A. Get Access
(1)
Put the adjustable access platform in position.
(2)
Open the access panel 325BL and 325BR at the trailing edge of the vertical stabilizer (Ref. TASK 55-33-13-010-002).
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B. Cleaning and Visual Inspection
(1)
Clean the yaw damper servo actuators and the adjacent area with a lint-free cotton cloth MISCELLANEOUS (Material No. 19-003) and CLEANING AGENTS (Material No. 11-026).
(2)
Examine the yaw damper servo actuators and the adjacent area for:
-damage
-corrosion
-satisfactory surface protection.
Subtask 27-26-51-860-059
C. Aircraft Maintenance Configuration
(1)
Energize the aircraft electrical circuits (Ref. TASK 24-41-00-861-002).
(2)
Do the EIS start procedure (ECAM system only) (Ref. TASK 31-60-00-860-001).
(3)
Pressurize the aircraft hydraulic systems (Ref. TASK 29-23-00-863-001) (Ref. TASK 29-10-00-863-003).
(4)
On the center pedestal, on the ECAM control panel:
-Get the F/CTL page.
(5)
On the overhead panel, on the ADIRS CDU:
-Set the OFF/NAV/ATT selector switch related to IR3 to NAV.
-Make sure that the OFF/NAV/ATT selector switches related to IR1 and IR2 are in the OFF position.
(6)
On the overhead panel, on the FLT CTL panels 23VU and 24VU:
-Make sure that the FAC1 and the FAC2 pushbutton switches are pushed (the FAULT and OFF legends are off).
(7)
Put the warning notices in the flight compartment to tell persons not to operate the flight controls.
(8)
Put the warning notices in position to tell persons not to operate the Green, the Yellow and the Blue hydraulic systems:
-in the cockpit on the hydraulic section 40VU of the overhead panel,
- on the ground service panels of the Green, Yellow and Blue hydraulic systems.
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R D. Make sure that this(these) circuit breaker(s) is(are) closed:
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU AUTO FLT/FAC1/28VDC 5CC1 B04 49VU AUTO FLT/FAC1/26VAC 14CC1 B03 121VU AUTO FLT/FAC2/28VDC 5CC2 M19 121VU AUTO FLT/FAC2/26VAC 14CC2 M18
4. Procedure
_________
(Ref. Fig. 601/TASK 27-26-51-991-004)
Subtask 27-26-51-710-054
A. Check for the External Leakage of the Yaw Damper Servo Actuator
NOTE : This procedure is for the Green hydraulic system. For the Yellow
____ hydraulic system, use the indications between the parentheses.
-------------------------------------------------------------------------------ACTION RESULT -------------------------------------------------------------------------------
1. On the FLT CTL panel 24VU(23VU):
-Release the FAC2(FAC1) - On this pushbutton switch, the OFF pushbutton switch. legend comes on.
2. On the center pedestal, on the
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