-
to monitor the inputs from and outputs to the related systems.

 The slat/flap control lever controls the position of the flaps. The CSU identifies the position of the slat/flap control lever and sends related signals to each SFCC. Each SFCC controls a valve block of a hydraulic motor, which is part of the flap PCU.
 The two SFCCs monitor the operation of the transmission system. The FPPU (which is part of the flaps PCU) and the two APPUs send signals to the SFCCs. They identify component failures of the transmission system and the control system. The Pressure-Off Brakes (POB) of the PCU and the WTBs stop and hold the transmission system when a failure occurs.

 2. Component Location
__________________
 (Ref. Fig. 001, 002, 003)

 -------------------------------------------------------------------------------FIN I FUNCTIONAL DESIGNATION I PANELIZONEIACCESS I ATA I I I I DOOR I REF. -------------------------------------------------------------------------------SLAT AND FLAP CONTROL LEVER 114VU 27-51-43
R 21CV SFCC1 85VU 127 824 27-51-34 22CV SFCC2 86VU 128 824 27-51-34 23CV PCU VALVE BLOCK 1 148 27-54-53 24CV PCU VALVE BLOCK 2 148 27-54-53 27CV FEEDBACK POSITION PICK-OFF UNIT 148 27-51-19 29CV ASYMMETRY POSITION PICK-OFF UNIT 575 575FB 27-51-18 30CV ASYMMETRY POSITION PICK-OFF UNIT 675 675FB 27-51-18 33CV WING TIP BRAKE 575 575EB 27-51-51 34CV WING TIP BRAKE 675 675EB 27-51-51 37CV FLAP ATTACHMENT FAILURE DETECTION 580 SENSOR 38CV FLAP ATTACHMENT FAILURE DETECTION 680 SENSOR 39CV FLAP ATTACHMENT FAILURE DETECTION 580 SENSOR 40CV FLAP ATTACHMENT FAILURE DETECTION 680 SENSOR 51CV COMMAND SENSOR UNIT 114VU 220 811 27-51-17 91CV RELAY 187VU 121 93CV RELAY 188VU 122 95CV RELAY 187VU 121 97CV RELAY 188VU 122
 3. System Description
__________________

R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 401-499,
 A. Mechanical Input
 The slat/flap control lever is installed in the cockpit on panel 114VU. There are five possible positions for the lever (identified as 0,1,2,3 and FULL). The lever position to the related flight phase, flap angle and the slat angle is as follows:

 Component Location
 Figure 001
 1EFF :  ALL  1  27-51-00 Page 3 
1  1  Feb 01/98
 1  1
 1CES  1

 Component Location
 Figure 002
 1EFF :  ALL  1  27-51-00 Page 4 
1  1  Feb 01/98
 1  1
 1CES  1

R Flap System Electrical Equipment - Component Location Figure 003
 1EFF : ALL 1 27-51-00Page 5 1 1 Aug 01/05 1 1 1CES 1 **ON A/C 301-399,

 A. Mechanical Input
 The slat/flap control lever is installed in the cockpit on panel 114VU. There are five possible positions for the lever (identified as 0,1,2,3 and FULL). The lever position to the related flight phase, flap angle, inboard and outboard tab angle and the slat angle is as follows:
 **ON A/C 001-049, 051-099, 101-149, 201-299,
 -------------------------------------------------------------------------------
LEVER FLAP SLAT
 POSITION FLIGHT PHASE ANGLE (deg) ANGLE (deg)
 -------------------------------------------------------------------------------
0 Cruise 0 0
 1* Hold 0 18
 1* Take-off 10 18
 2 Take-off 15 22
 3 Take-off /Approach 20 22
 FULL Land 35 27

 * Flap auto-command function
 The slat/flap control lever has two baulks. One baulk between position 1 and 2, and one between position 3 and FULL. The baulks prevent a one-movement-change of the lever position from FULL to 0. The lever turns a shaft which moves the input shaft of the CSU through spur gears.

R **ON A/C 151-199, 401-499,
 -------------------------------------------------------------------------------
LEVER FLAP SLAT
 POSITION FLIGHT PHASE ANGLE (deg) ANGLE (deg)
 -------------------------------------------------------------------------------
0 Cruise 0 0
 1* Hold 0 18
 1* Take-off 10 18
 2 Take-off 15 22
 3 Take-off /Approach 20 22
 FULL Land 40 27

 * Flap auto-command function The slat/flap control lever has two baulks. One baulk between position 1 and 2, and one between position 3 and FULL. The baulks prevent a one-movement-change of the lever position from FULL to 0. The lever turns a shaft which moves the input shaft of the CSU through spur gears.

R **ON A/C 301-399,
R -------------------------------------------------------------------------------R LEVER FLIGHT FLAP TAB TAB SLAT R POSITION PHASE ANGLE ANGLE ANGLE ANGLE R INBOARD OUTBOARD R -------------------------------------------------------------------------------R 0 Cruise 0 0 0 0 R 1* Take-off 0 0 0 18 R 1* Take-off/Approach 10 5.4 6.2 18 R 2 Take-off/Approach 14 8.4 9.7 22 R 3 Take-off/Approach 21 13.6 15.8 22 R FULL Land 25 16.1 19.1 27 R R * Flap auto-command function
　
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