(d)
Push the LSK adjacent to <ADVANCE.
(e)
Make sure the CDU shows:
ENGAGE FAIL
LEFT
ENGAGE FAIL
RIGHT
(f) Do step 1 (g) through 1 (r) again for the C-channel.
U. Elevator Positive Max Authority Test
S 865-315
(1)
Use the stab trim switches on the control wheel to set the
stabilizer to 7 (|0.1) units.
S 865-419
(2)
Supply pressure to the auxiliary pitot system to between 244 and 266 knots IAS (Ref 34-11-00/201).
S 745-317
(3)
Push the LSK adjacent to <ELV SURFACE LIMIT from the GROUND TESTS MENU page on the CDU.
(a) Continue with the instructions shown on the CDU until this message shows:
ENGAGE AUTOPILOT L C R
TO CMD POSITION
NOTE: Do not set the stabilizer trim to 6 units when this
____ instruction shows on the CDU. Push <CONTINUE to continue.
(b) Push the left autopilot CMD button on the MCP.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
22-10-00
ALL ú ú 04 Page 575 ú Feb 18/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
(c)
Push <ADVANCE.
(d)
Make sure that these messages show:
ENGAGE FAIL RIGHT
ENGAGE FAIL CENTER
(e)
Continue with the instructions shown on the CDU until the POSITIVE LIMIT and NEGATIVE LIMIT page is shown.
(f)
Push the LSK adjacent <POSITIVE LIMIT.
(g)
Write down the value for the elevator surface position: ______ DEG.
(h)
Make sure that the value for the left channel is +9.8 degress maximum.
(i)
Make sure that the control column stays at the positive limit and the AUTOPILOT DISC does not show on the main EICAS display.
(j)
Push the LSK adjacent to <CONTINUE to go back to the POSITIVE LIMIT and NEGATIVE LIMIT page.
(k)
Push the LSK adjacent to <ADVANCE to complete the test.
NOTE: An autopilot disconnect warning will occur at the end
____
of this test which is permitted.
(l) Push the autopilot disconnect switch (captain's or first officer's) two times.
S 745-318
(4) Do steps (3) thru (3)(l) again for the right channel.
NOTE:____Engage fail messages for the right channel are: ENGAGE FAIL LEFT and ENGAGE FAIL CENTER.
NOTE: The value for the right channel is +9.8 degrees maximum
____
(same as the left channel).
S 745-319
(5) Do steps (3) thru (3)(l) again for the cemter channel.
NOTE:____Engage fail messages for the center channel are: ENGAGE FAIL LEFT and ENGAGE FAIL RIGHT.
NOTE: The value for the center channel is +9.8 degrees maximum
____
(same as the left channel).
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
22-10-00
ALL ú ú 01 Page 576 ú Oct 18/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
S 865-320
(6) Remove pressure from the auxiliary pitot system (Ref 34-11-00/201).
V. Elevator Negative Max Authority Test
S 865-321
(1)
Use the stab trim switches on the control wheel to set the
stabilizer to 2.68 (|0.1) units.
S 865-322
(2)
Supply pressure to the auxiliary pitot system to between 244 and 266 knots IAS (Ref 34-11-00/201).
S 745-323
(3)
Push the LSK adjacent to <ELV SURFACE LIMIT from the GROUND TESTS MENU page on the CDU.
(a) Continue with the instructions shown on the CDU until this message shows:
ENGAGE AUTOPILOT L C R
TO CMD POSITION
NOTE: Do not set the stabilizer trim to 6 units when this
____ instruction shows on the CDU. Push <CONTINUE to continue.
中國航空網 www.k6050.com
航空翻譯 www.aviation.cn
本文鏈接地址：747-400 AMM 飛機維護手冊 空調 AUTO FLIGHT(68)
