Quantcast
Autopilot Modes of Operation.

Share on Google+Share on FacebookShare on LinkedInShare on TwitterShare on DiggShare on Stumble Upon
Custom Search
 
  
 
TM 1-1510-218-10 3A-34 (8)   IAS Indicator.  Illuminates when airspeed hold mode is selected. (9)   AP   DISC   Indicator.      Illuminates   when autopilot is disengaged. (10)   BACK  LOC  Indicator.    Illuminates  when back-course mode is selected. (11)   GS   CAP   Indicator.        Illuminates   when glideslope is captured. (12)   NAV   CAP   Indicator.      VOR-I   or   VOR-2 selected illuminates when selected radial is captured.   VLF  selected  illuminates  when  VLF  is  coupled  to  the flight director. h.  Autopilot Modes of Operation. (1)   Attitude   Mode.      The   autopilot   is   in   the attitude  mode  when  the   ENG  /  DIS  switch,  autopilot mode  selector  panel,  is  in  the   ENG  position  and  no mode selector switches (HDG,  NAV, etc.), have been selected.  Refer to Figure 3A-19.  The autopilot will fly the  aircraft  and  accept  pitch  and  roll  rate  commands from the autopilot pitch-turn panel, Figure 3A-20. (2)   Guidance Mode.  When the autopilot is in the  attitude  mode  and  a  mode  selector  switch,   HDG, NAV,  etc.,  is  pressed,  the  autopilot  is  coupled  to  the flight  director  and  accepts  steering  commands  from the   computer.      Depending   on   which   mode   selector switch on the autopilot mode selector control panel is pressed,  autopilot  operation  can  be  described  by  the following sub-guidance modes. (a)   Heading    Mode.        When    the    HDG mode is selected on the autopilot mode selector panel with  the  autopilot  engaged,  the  autopilot  will  fly  the aircraft to the heading, and then maintain the heading under   the   heading   marker   on   the   pilot's   horizontal situation indicator. (b)   Navigation   Mode.      When   the   NAV mode is selected  on the autopilot mode selector panel, the system initially switches to the NAV ARM heading- hold  submode,  as  shown  by  illumination  of  the   NAV  ARM    and   HDG   indicators   on   the   autopilot/   flight director   annunciator   panel.      The   autopilot   will   then command the aircraft  to  follow  the  heading  under  the heading    marker    on    the    pilot's    horizontal    situation indicator, with the heading marker set to produce the desired  VOR  or  localizer  intercept  angle.    The  flight computer   will   compute   a   capture   point   based   on deviation  from  desired  radio  beam,  the  rate  at  which the aircraft is approaching this beam, and the course intercept angle.  When beam capture occurs, the HDG and  NAV  ARM  indicator  lamps  on  the  autopilot/flight director annunciator panel will extinguish and the  NAV CAP lamp will illuminate.  The autopilot will then track the  selected  radio  course  with  automatic  crosswind correction. (c)   Navigation Mode (With Linear Deviation).        The    system    features    linearized    VOR deviation when a VORTAC is being used.  A LIN DEV  light   on   the   autopilot   annunciator   will   illuminate   to indicate  operation.    The  lateral  deviation  bar  indicates the distance in nautical miles from the selected radial regardless  of  how  close  the  aircraft  is  to  the  ground station.        Linear    deviation    measures    the    aircraft's displacement    in    nautical    miles    from    the    selected course rather than degrees of displacement associated    with    normal    VOR    navigation.        Linear deviation permits flying parallel to any selected course by  maintaining  the  appropriate  needle  deflection  on the horizontal situation indicator.  When the  LIN DEV  light   is   on,   the   flight   director   system   is   obtaining distance   data   from   the   DME   and   bearing   from   the VOR-1 receiver.  Linear deviation operates only when DME  is  on  NAV  1  receiver  and  is  displayed  on  pilot's indicator   only.      For   en   route   operation   in   the   NAV mode,  full-scale  deflection  of  the  lateral  deviation  bar equals  10  miles  from  the  selected  radial.    For  VOR approach    operation,    the    APPR    mode    should    be selected.      This   provides   linear   deviation   with   the sensitivity limits of the computer increased so that full- scale   deflection   of   the   lateral   deviation   bar   equals 1 mile from the selected radial.  APPR mode should be selected when within 10 miles of the final approach fix.   Capture is the same as in the NAV mode. NOTE Failure   to   select   APPR   for   VORTAC   or VOR/DME    instrument    approaches    when using   linear   deviation   may   result   in   not meeting obstruction clearance criteria. (d)   Backcourse    Mode.        When    BACK LOC mode is selected on the autopilot mode selector panel,   localizer   capture   is   the   same   as   in   a   front- course  approach  in  NAV  or  APPR  mode.    Glideslope is  inhibited  during  a  backcourse  approach.    The  HSI must be set to the front-course heading so that lateral deviation will be directional. (e)   Approach  Mode.  When APPR mode is   selected   on   the   autopilot   mode   selector   panel, localizer capture is the same as in the NAV mode but glideslope     arm     and     capture     functions     are     also provided.  When the APPR mode is selected, the  NAV ARM   annunciator  lamp  will  illuminate,  indicating  that the   system   is   armed   for   localizer   capture.      As   the aircraft approaches the localizer beam, the   NAV  CAP  annunciator lamp will illuminate.  Once the localizer is being  tracked,  the    GS   ARM  annunciator  lamp  will

Aviation News
FAA Extends Deadline for Final Helicopter Safety Rule
April 17In response to industry feedback and so that the...
faa.gov
The 2014 AMC/AEEC Conference
[Avionics Today April 17, 2014] 2014 marks the 65th year...
aviationtoday.com
Lockheed Martin F-35 Fleet Tops 15,000 Flight Hours
[Aviation Today, April 16] Lockheed Martin’s F-35 Lightning 2 fleet...
aviationtoday.com
AirAsia to implement Airbus Managed Inventory service
• Automatically replenishing inventory levels at AirAsia facilities • Guaranteeing...
airbus.com
AgustaWestland Offers New Trainer in U.S. Navy Competition
AgustaWestland, manufacturer of the AW119 Koala, brought a new variant...
aviationtoday.com
Sikorsky Starts Naval Air Systems Command Tests for CH-53K
Sikorsky Aircraft has completed the initial series of tests required...
aviationtoday.com
Army Modifies CH-47F Cargo Contract with Boeing
Boeing was awarded an $8.8 million modification to its existing...
aviationtoday.com
FAA Installs Equipment for NextGen Aircraft Tracking System
The FAA completes equipment installation for ADS-B, the key satellite-based...
faa.gov
Airbus launches new version of ACJ319 corporate jet
Brings big-cabin comfort to broader market Share this Read more...
airbus.com
China’s Tibet Airlines takes delivery of its first A319 with Sharklets
Wing-tip devices further enhance the A319’s superior high altitude performance...
airbus.com
Navy's X-47B Completes First Night Flight
[Avionics Today April 11, 2014] The U.S. Naval Air Systems Command's...
aviationtoday.com
Wind River Powers F-35 Communications in Flight Test
[Avionics Today April 11, 2014] Avionics Magazine recently caught up with...
aviationtoday.com
China’s Qingdao Airlines takes delivery of its first A320
Start-up airline chooses Airbus to launch operations Share this Read...
airbus.com
A350 XWB makes first touchdown in UK
Next generation Airbus flown in by British test pilot Frank...
airbus.com
Airbus’ US A320 Final Assembly Line takes shape
Snapshot one year after ground-breaking in Mobile, Alabama Share this...
airbus.com
Lockheed Martin, Navy Make Autonomous Aerial Strides
[Avionics Today April 10, 2014] Officials from the Office of Naval...
aviationtoday.com
AgustaWestland to Deliver Second AW139 to Armed Forces of Malta
AgustaWestland will provide the Armed Forces of Malta with a...
aviationtoday.com
Northrop Grumman to Build Five More MQ-8Cs for U.S. Navy
Under an expanded contract, Northrop Grumman Corporation will build five...
aviationtoday.com
Airbus recognises cabin BFE suppliers’ customer support
Recognising suppliers for best in-service performance Share this Read more...
airbus.com
Airbus creates coloring book to engage Mobile’s school children in aerospace industry
Airbus, the world-leading aircraft manufacturer, has authored a new coloring...
airbus.com

   


Privacy Statement - Copyright Information. - Contact Us

comments powered by Disqus

Integrated Publishing, Inc.
9438 US Hwy 19N #311 Port Richey, FL 34668

Phone For Parts Inquiries: (727) 755-3260
Google +