737-300 400 500 AMM 飞机维护手册 自动飞行 AUTOFLIGHT 1(33)

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2. F/D ON AND NO MODE SELECTED 3. SELECTED VHF NAV NOT VALID (VOR 8 SEC/LOC 2 SEC) 5. VOR FREQ TUNED 4. SELECTED LNAV NOT VALID 1. F/D OFF  X  X  X  X X  X X  X X X  X X X  X X X  X 
9. R/A <50 FT (FLARE) 10. TAS NOT VALID 8. R/A NOT VALID (2 SEC) 7. LOC FREQ TUNED AND FGN IN CMD AND VOR CAPT 6. VOR FREQ TUNED AND FGN IN CMD AND LOC CAPT X  X  X X  X X  X X X 
15. ATTITUDE XFR (NOT NORM) AND NEITHER A/P IN CMD AND BOTH F/D ON 14. COMPASS XFR (NOT NORM) AND NEITHER A/P IN CMD AND BOTH F/D ON 13. SELECTED IRU MAG HEADING NOT VALID 12. SELECTED IRU ROLL ANGLE NOT VALID 11. SELECTED IRU MAGNETIC TRACK NOT VALID  1X X  X X  X X  X X  X X X  X X X X  X X X  X X X X 
19. F/D COMPARATOR 17. VHF NAV XFR (NOT NORM) AND NEITHER A/P IN CMD AND BOTH F/D ON 18. AUTOTUNE 16. AC BUS XFR (NOT NORM) AND NEITHER A/P IN CMD AND BOTH F/D ON  X X  X  X  XX X  2 X X X  X X 

COMPASS TRANSFER DURING TO MODE WITH HDG SEL OPTION WILL CAUSE ROLL BAR OUT VIEW
NEITHER A/P IN CMD AND LRRA ATTITUDE <800 FEET
F/D Roll Bar Bias TableFigure 21
A737-300/400/500MAINTENANCE MANUAL
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù.AIRPLANES WITHOUT EFIS ú
 22-11-00
úú 15 Page 59 ú Nov 12/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 (i)  
Event 9 - A radio altitude of less than 50 feet (flare).

 (j)  
Event 10 - The true air speed (TAS) is not valid.

 (k)  
Event 11 - Selected IRU magnetic track is not valid.

 (l)  
Event 12 - Selected IRU roll angle is not valid.

 (m)  
Event 13 - Selected IRU magnetic heading is not valid.

 (n)  
Event 14 - Compass tranferred (Attitude to Both on 2) without either A/P in CMD and both F/D on.

 (o)  
Event 15 - Attitude transferred (Attitude to Both on 2) from the normal position without either A/P in CMD or both F/D on.

 (p)  
Event 16 - AC bus transferred from the normal position without either A/P in CMD and both F/D on. However, the CMD output is transferred to the unaffected system.

 (q)  
Event 17 - VHF NAV transferred from the normal position without either A/P in CMD and both F/D on.

 (r)  
Event 18 - The VHF Navigation System in autotune.

 (s)  
Event 19 - F/D Comparator produces Bar Bias when there is a 3° difference between the Captain's and the F/O's F/D commands for more than 3 seconds.

 (5)  The pitch bar bias Fig. 22, is used to bias the F/D bar out of view if information is confusing or not reliable. The matrix displays the events and associated mode that will generate pitch bar bias. The following provides an explanation of significant events.
 (a)  
Event 1 - Flight director off.

 (b)  
Event 2 - Flight director on but a mode not selected.

 (c)  
Event 3 - A VOR frequency is tuned and the foreign A/P is in CMD with GS engaged.

 (d)  
Event 4 - Radio altimeter is not valid. A 2 second delay allows for short interrupts in the GS engage mode.

 (e)  
Event 5 - The GS is not valid. A one-second delay allows for short interrupts.

 (f)  
Event 6 - This condition specifies that the A/P is in a speed mode and the airplane should be gaining altitude but is not climbing and is approaching a stall.

 (g)  
Event 7 - This condition specifies that the A/P is engaged in a speed mode and should be descending but is not and at the same time exceeding the VMO/MMO limits.

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. AIRPLANES WITHOUT EFIS ú

 22-11-00
 ú ú 13 Page 60 ú Nov 12/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
MODE 
EVENT  MODE NO TO  V/S  ACQ ALT MCP  HOLD ALT MCP  LVL  CHG  SPD VNAV  VN AV PA TH  ENGA G/S  GA
IAS  MACH  V/S  ACQ ALT  HOLD ALT 
2. F/D ON AND NO MODE SELECTED 5. G/S NOT VALID (2 SEC) 4. R/A NOT VALID (2 SEC DELAY G/S ONLY) 3. SELECTED LCL VOR TUNED AND FGN CMD AND G/S ENGA 1. F/D OFF  X  X X  X  X  X  X  X  X  X  X  X  X X X X  X X 
　
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