(5) Remove the access platform(s).
(6) Remove the warning notice(s).
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TASK 72-23-00-280-007
Inspection of Aft Acoustical Panels
1. Reason for the Job
__________________
Self Explanatory
2. Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------
REFERENCE QTY DESIGNATION
-------------------------------------------------------------------------------
No specific warning notice
No specific access platform 1 m (3 ft. 3 in.)
B. Referenced Information
-------------------------------------------------------------------------------
REFERENCE DESIGNATION
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71-13-00-010-040 Opening of the Fan Cowl Doors 71-13-00-410-040 Closing of the Fan Cowl Doors 72-23-00-000-026 Removal of the Aft Acoustical Panels 72-23-00-300-044 Repair of Forward, Mid and Aft Acoustical Panels when
Missing Cup 72-23-00-400-026 Installation of the Aft Acoustical Panels 72-23-00-400-044 Installation of Acoustical Panels Attachment Screw
Locking
78-30-00-081-041 Make the Thrust Reverser Serviceable after
Maintenance
78-30-00-481-041 Make the Thrust Reverser Unserviceable for
Maintenance
78-36-00-010-040 Opening of the Thrust Reverser Doors
78-36-00-410-040 Closing of the Thrust Reverser Doors
R 72-23-00-991-311 Fig. 609
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__________ Subtask 72-23-00-941-095
A. Safety Precautions
(1) On the center pedestal, on the ENG panel 115VU:
(a) Put a warning notice to tell persons not to start the engine.
(2) Make sure that the engine 1(2) shutdown occurred not less than 5 minutes before you do this procedure.
(3) On the overhead maintenance panel 50VU:
(a) Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.
(b) Put a warning notice to tell persons not to energize the FADEC 1(2).
Subtask 72-23-00-010-120
B. Get Access
(1) Open the fan cowl doors (Ref. TASK 71-13-00-010-040):
FOR 1000EM1
437AL, 438AR
FOR 1000EM2
447AL, 448AR
(2) Put an access platform in position. Subtask 72-23-00-040-073
C. Make the thrust reverser unserviceable (Ref. TASK 78-30-00-481-041). Subtask 72-23-00-010-121
D. Open the thrust reverser doors (Ref. TASK 78-36-00-010-040):
FOR 1000EM1
451AL, 452AR
FOR 1000EM2
461AL, 462AR
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4. Procedure
_________
R (Ref. Fig. 609/TASK 72-23-00-991-311)
Subtask 72-23-00-350-060
A. Inspection of Aft Acoustical Panels
-------------------------------------------------------------------------------INSPECT/CHECK MAXIMUM REMARKS SERVICEABLE LIMITS -------------------------------------------------------------------------------
1. Aft acoustical panel
cups
A. Dents, marks, No limits (Ref. TASK 72-23-00-400-
indentations 026) for re-installation.
caused by screw
head.
B. Pierced cups Not serviceable (Ref. TASK 72-23-00-400-
caused by screw 044)
head.
C. Unbonded cups. Not serviceable (Ref. TASK 72-23-00-300-
044)
D. Missing cups. Not serviceable (Ref. TASK 72-23-00-300-
044)
PRE SB 72-071
E. Damaged or missing No limits unless the Replace seal if missing
bonded seal(s) whole seal is missing
END OF PRE SB
72-071
POST SB 72-071
F. Mis-installed, Not serviceable Install the seal
badly damaged or correctly, or install a
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