R B. Cancel the Initial Values Acquisition Demand R (Ref. Fig. 503/TASK 77-32-34-991-936)
R -------------------------------------------------------------------------------R ACTION RESULT R -------------------------------------------------------------------------------
R 1. Push the line key adjacent to the R CANCEL LEFT (RIGHT) indication. R
R 2. On the MCDU, push the line key R adjacent to the RETURN indication R until the CFDS menu page comes R into view.
R Subtask 77-32-34-860-052
R C. Read the Initial Values The initial values acquisition demand for the left (right) engine are cancelled.
R (Ref. Fig. 503/TASK 77-32-34-991-936)
R -------------------------------------------------------------------------------R ACTION RESULT R -------------------------------------------------------------------------------
R 1. Push the line key adjacent to the
R READ LEFT N1 (N1 RIGHT)
R indication to get the READ LEFT
R N1 (N1 RIGHT) menu.
R 2. Push the NEXT PAGE function key
R to get the second INITIAL VALUES
R READ N1 LEFT (RIGHT) menu page.
R 3. Push the line key adjacent to the
R RETURN indication to get the
R INITIAL VALUES menu. Do the same
R procedure, to read N2 right or
R left.
R 4. On the MCDU, push the line key
R adjacent to the RETURN indication
R until the CFDS menu page comes
R into view.
F
R EEFF : 051-051, E E ECES The table that shows the values comes into view.
The INITIAL VALUES menu comes into view.
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R Subtask 77-32-34-860-053
R D. Load of the Initial Values
R (Ref. Fig. 503/TASK 77-32-34-991-936)
R NOTE : The first value that comes into view is the serial number of the
____ R engine. The second value is related to the first speed interval R (20 percent for N1, 50 percent for N2). This sequence continues R until you get the initial value related to the last speed interval R (125 percent for N1 and N2).
R NOTE : The EVMU advisory logic uses two independent advisory thresholds
____ R (Ref. SIL 77-004): R - the fixed thresholds: 6 units for N1 vibrations and 4.3 units R for N2 vibrations. R - the computed thresholds, calculated from the initial engine R vibration values. R To prevent triggering of the advisory when the actual engine R vibrations are in the permitted limits, we recommend that you load R initial values near the fixed thresholds (4 units for N1 R vibrations and 3 units for N2 vibrations).
R -------------------------------------------------------------------------------R ACTION RESULT
R -------------------------------------------------------------------------------
R 1. Push the line key adjacent to the EVMU initial values engine left (right)
R LOAD LEFT (RIGHT) indication to page comes into view.
R get the LOAD LEFT (RIGHT)
R program.
R 2. On the MCDU keyboard, enter the The value comes into view under the <
R engine serial number (6 digits) RETURN indication : (YYYYYY)
R 3. Push the line key adjacent to the the value goes out of view under RETURN
R S/N. and comes into view in front of S/N
R NOTE : If the EVMU does not accept the new value:
____ R - the old value comes into view, R - you must do the operation again.
R 4. Push the LOAD N1 key. The initial value related to the first R speed interval comes into view.
R 5. Change the value. Do the same R steps as for the serial number of R the engine.
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ACTION RESULT
-------------------------------------------------------------------------------
R NOTE : If it is not necessary to change the old value, you must tell the____
R EVMU that this value is correct. Push the line key adjacent to the
R old value.
R 6. Push the NEXT PAGE key to enter
R values at higher speeds.
R 7. Do again the procedure to load N2
R values.
R 8. On the MCDU, push the line key
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