(4) From the check/inspections in step(1) thru (3):
(a) If the check/inspections were not ok and fault was corrected, do the step (8)
(b) If the check/inspectionwere ok ,do the step (5)
(5) Do a check of the last 10 flight entries in the aircraft log book :
(a) if the entry for the last flight shows that a rudder trim correction of more than 8.8 degrees was necessary to keep the aircraft straight during taxi ,do the fault isolation in Para.4A,before the next flight
(b) if there are less than 3 entries in the log book where more than 3 degrees ,but less than or equal to 8.8 degrees, of rudder trim was necessary to keep the aircraft straight during taxi, do the step (8)
(c) if there are 3,or more ,entries in the logbook where more than 3 degrees, but less than or equal to 8.8 degrees,of rudder trim was necessary to keep the aircraft straight during taxi ,do the step
(7)
(d) if there is an entry in the logbook that has put on limit of 10 flights or 5 operating days ,whichever is the longest ,before the aircraft must returned to maintenance, do the step (6)
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(6) Return the aircraft to service and make a record in the aircraft logbook to monitor the NWS and return the aircraft to maintenance after no more than the number of flights or operating days remaining from the 10 flights or 5 operating days limits whichever is the longest.
(7) Return the aircraft to service and make record in the aircraft log book monitor the NWS and return the aircraft to maintenance after not more than 10 flights or 5 operating days whichever is the longest.
NOTE : If during the above flight or day limit there is an entry
____ where more than 8.8 degrees of rudder trim was necessary to keep the aircraft straight during taxi: Do the fault isolation Para. 4.A before next flight.
(8) Return the aircraft to service and make a record in the aircraft log book to monitor the NWS during the next taxi operation to assess the aircraft lateral deviation, if any, using the rudder trim input.
4. Fault Isolation
_______________
A. Procedure
(1) Do the procedure that follows when one of these two conditions has occured :
- There are 3, or more, logbook entries related to a NWS offset of more than 3 degrees, but less than or equal to 8.8 degrees, rudder trim and the 10 flight or 5 operating day limit has expired.
- There is 1 entry related to a NWS offset of more than 8.8 degrees of rudder trim.
NOTE : When an Alignment Tool Nose Wheel (JT2000AIRBUS) is not
____ available and it is not possible to do a taxiway test, it is important to continue the trouble shooting from Para. 4.B.
(2) If the inspection/check in Para. 3.A. was satisfactory, use one of the two procedures that follows, to find the value of the NWS angle :
- If a NOSE WHEEL ALIGNMENT TOOL (JT2000AIRBUS) is not available, do the taxiway test at step (4).
- If a NOSE WHEEL ALIGNMENT TOOL is available do step (3).
(3) Use the NOSE WHEEL ALIGNMENT TOOL to do a nose wheel alignment check (Ref. AMM TASK 32-51-00-220-001)
(a) Make a record of the NWS angle, as shown on the NOSE WHEEL ALIGNMENT TOOL.
(b) Using the rudder trim, align the nose wheels to the zero position, as shown on the NOSE WHEEL ALIGNMENT TOOL :
- If the rudder trim angle necessary to put the NWS to the zero position is equal to, or more than, the rudder trim angle
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recorded in the aircraft logbook, continue the procedure from Para. 4.B.
- If the rudder trim angle necessary to put the NWS to the zero position is less than the rudder trim angle recorded in the aircraft logbook, do step (c).
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