14.
On the panel 115VU, move the ENG 1&2 MASTER switch from "OFF" to "ON" then back to "OFF" to reset the ECU.
15.
Repeat the test described in the step 9 thru 15 with the A/THR instinctive disconnect pushbutton switch on the left throttle control lever.
16.
Close the circuit breaker 10CA1 (wait for safety test).
17.
Open the circuit breaker 10CA2.
18.
Repeat the tests described in the steps 9 thru 14. For the step 13 use the circuit breaker 10CA1.
19.
Close the circuit breaker 10CA2.
5. Close-up
________
Subtask 22-30-00-860-057On MCDU AIDS PARAM LABEL page checkthat bit 27 of label 354 remains to 1.
On MCDU AIDS PARAM LABEL page checkthat the bit 27 of label 354 is set to
0.
Same result step by step.
Same result step by step.
A. Put the aircraft back to its initial configuration.
(1)
On the maintenance panel 50VU, push the ENG/FADEC GND PWR 1 and 2 pushbutton switches (ON legends go off).
(2)
De-energize the aircraft electrical circuits
(Ref. TASK 24-41-00-862-002). R
1EFF : ALL 1 22-30-00Page 504 1 1 Feb 01/01 1 1 1CES 1 AUTOTHRUST ENGAGEMENT - DESCRIPTION AND OPERATION
_________________________________________________
1. General
_______
The A/THR function can be engaged in three different ways:
-When the A/THR pushbutton switch on the FCU is pushed in, with aircraft on the ground and engines stopped or in flight at an altitude higher than 100 feet (except in LAND TRACK phase)
-
Automatically further to the engagement of the AP/FD TAKE OFF or GO AROUND modes
-
Automatically if the ALPHA FLOOR condition elaborated in the FAC is
present and if the altitude is higher than 100 feet.
The engagement logic is explained in Para. 2.C.
R **ON A/C 151-199, 401-499,
The ALPHA FLOOR activation is not possible in the engine stopped and flaps
extended configuration.
**ON A/C ALL
2. System Description
__________________
A. FMGC Priorities at FCU Level The FMGC which has priority, depending on the AP/FD and the A/THR engagement, controls the engine thrust. The logic below defines the FMGC which has priority:
-------------------------------------------------------------------------------| AP engagement | FD engagement | A/THR engagement | FMGC | |--------------------|---------------------|---------------------| having | | FMGC1 | FMGC2 | FMGC1 | FMGC2 | FMGC1 | FMGC2 | priority | |---------|----------|----------|----------|----------|----------|------------| | 1 | -| -| -| -| -| 1 | | 0 | 1 | -| -| -| -| 2 | | 0 | 0 | 1 | -| -| -| 1 | | 0 | 0 | 0 | 1 | -| -| 2 | | 0 | 0 | 0 | 0 | 1 | -| 1 | | 0 | 0 | 0 | 0 | 0 | 1 | 2 | -------------------------------------------------------------------------------
-: indifferent
1EFF : ALL 1 22-31-00Page 1 1 1 Aug 01/05 1 1 1CES 1
B. Autothrust Control States (Ref. Fig. 001) The different states of the A/THR can be:
(1)
Disengaged
In this case:
-
the engines are controlled by the throttle control levers, - on the FCU, the A/THR pushbutton switch is off,
-
the FMA does not display the A/THR engagement status and the A/THR modes.
(2)
Engaged When the A/THR engage logic conditions are present, the A/THR can be engaged. The A/THR engaged can be:
(a)
Active when the two throttle control levers are in the A/THR active area. In this case:
-
the autothrust system controls the engines, - on the FCU, the A/THR pushbutton switch is on,
-
the FMA displays A/THR in white in the right column and one A/THR mode in the left column.
(b)
Not active, if both throttle control levers are above CL gate or one throttle control lever above MCT gate. In this case:
-
the throttle control levers control the two engines,
-
the A/THR pushbutton switch is on,
-
the FMA displays A/THR in cyan in the right column and the thrust setting in the left column.
A/THR Engage Logic Figure 001
1EFF : 1 1R 1CES ALL 1 11 1 22-31-00 Page 3 Feb 01/00
C. A/THR Engage and Disengage Logic (Ref. Fig. 001) The A/THR can only be engaged when all the necessary conditions are present and if there is a request for engagement (pilot action or automatic).
(1) Required engagement conditions
Two conditions are required to make the engagement possible:
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