(11)
Disengage the autothrottle.
(12)
Reset radio altitude to 1800 feet.
(13)
Engage both autopilot channels to CMD.
(14)
Adjust the localizer and glide slope deviations to zero.
(15)
Press APP ON on AFCS mode control panel.
NOTE: In order to be able to engage the A channel autopilot while in AIR mode, perform the following procedure in sequence:
1) Close the LANDING GEAR-LIGHTS circuit breaker.
2) On the overhead panel set the GRD INTERCONNECT switch to OPEN position.
3) On P6-2 Panel, open the HYD SYSTEM GRD INTERVALVE circuit breaker.
4) Open the LANDING GEAR-LIGHTS circuit breaker.
5) Engage the A channel Autopilot.
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Jun 20/84 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 22-31-01 Page 519
(16)
Place the thrust levers at mid-position (half way forward).
(17)
Set the autothrottle ARM switch to ARM position.
(18)
Press SPEED to ON on the AFCS mode control panel. Verify that SPEED is annunciated on FMA's in A/T section.
(19)
Change radio altitude to 1200 feet. Verify that FLARE ARM is annunciated on FMA's.
(20)
Slowly reduce the radio altimeter toward zero starting at 60 feet altitude. Verify that:
(a)
A/P annunciator shows FLARE ENGAGE as the altitude is reduced thru 42 ±3 feet.
(b)
A/T annunciator shows RETARD.
(c)
The thrust levers drive aft.
5. Restore Airplane to Normal
A. Disengage autothrottle and autopilot systems.
B. Retard all thrust levers to idle stop (full aft).
C. Return flaps to normal setting.
D. Replace vertical gyros in airplane.
E. Disconnect all portable test equipment.
F. Close all circuit breakers previously opened.
G. Set GRD INTERCONNECT switch to CLOSE.
H. Remove all power from airplane.
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AUTOTHROTTLE ACCELEROMETER - REMOVAL/INSTALLATION
EFFECTIVITY
AS N730AS, N740AS, N742AS SA ZS-SIA and on GJ B-2509 and B-2510
1. General
A. One autothrottle accelerometer is installed in the electrical/electronic equipment bay outboard of the airplane battery. Access to the unit is through the lower equipment door. A protective cover is installed over the unit which must be removed prior to removing the unit.
2. Remove Accelerometer (Fig. 401)
A. Open autothrottle system ac and dc circuit breakers on P6 panel.
B. Gain access to main equipment bay and remove protective cover over accelerometer (outboard of airplane main battery).
C. Disconnect electrical connector from accelerometer.
D. Remove screws and washers (3 places) and remove accelerometer.
3. Install Accelerometer (Fig. 401)
A. Perform steps 2.B. thru 2.D. in reverse order. Close autothrottle system ac and dc circuit breakers.
4. Accelerometer Installation Test
A. Perform autothrottle system BITE procedures.
NOTE: BITE group "O" tests check longitudinal accelerometer.
B. Remove electrical power if no longer required.
May 20/82 22-31-71 Page 401
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
H20553
Autothrottle Accelerometer 580
22-31-71Page 402 Figure 401 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. Jun 20/83
THRUST LEVER POSITION TRANSMITTER - REMOVAL/INSTALLATION
EFFECTIVITY
AS N730AS, N740AS, N742AS SA ZS-SIA and on GJ B-2509 and B-2510
1. General
A. One thrust lever position transmitter (LVDT) is installed on each engine. The unit is located on the left side of the engine and installed between the engine mainframe and the engine cross-shaft crank. Access is provided by opening the left cowl panel.
2. Remove position Transmitter (LVDT) (Fig. 401)
A. Open autothrottle system ac and dc circuit breakers on P6 panel.
B. Open left cowl panel on applicable engine (Ref 71-11-11).
C. Disconnect position transmitter electrical connector and cable supports as applicable.
D. Remove bolt, spacer, washer(s) and nut (on cross-shaft crank end only) from each end of LVDT.
NOTE: Bolt, spacer, and washers must be reinstalled in same location to provide correct bearing spacing.
E. Remove LVDT, note electrical cable orientation.
3. Install Position Transmitter (LVDT) (Fig. 401)
A. Hold LVDT in same position as removed LVDT and install bolts, spacers, washers and nut in same location as on removed unit.
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