Jump to content


This topic is now archived and is closed to further replies.


DHC-6 Twin Otter - Bendix/King KLN 90B GPS Navigation System

Recommended Posts

I am looking for some guidance. I've read and re-read the Aerosoft manual in an attempt to understand the functionality of this device. Failing a grasp of the functions from reading, I embarked on a flight in which I could experiment to test my knowledge and fluency in its operations. I have also referred to the actual manual for this equipment, but fear that many of the functions are not featured in te sim version. I am using the KLN90B Navigation System in the Aerosoft Twin Otter. From within FSX, I created and applied a low airway flighplan which contained numerous VORs and intersection points. In the most part, left untouched, I likely would have gotten from point A to point B no problem flying by hand using the KLN as a source of reference only. I'm not certian how to use this in the capacity of an "auto pilot". In my monkeying around, I somehow added an approach routine to the end of my previously defined flight plan in which I was unaware I had done. Since I was flying by hand, it likely would't have had any impact on my flight as I would have just ignored the reference. However, as my previous flight plan failed to include a valuable waypoint at the end of my flight (it was unavailable in FSX to be included during planning), my thoughts had me think that if I used direct to, and entered the missing waypoint, I would get there. (My ignorance on the function of direct-to). For the life of me, I could not enter any characters in the 5 spots highlighted by the blinking cursour. In this action, somehow my aircraft took over! I looked at the flight plan page, and on top it was flashing "ENROUTE". I scrolled down, and my guess was, I was flying "direct-to" that inadvertently added approach that was added to my flightplan 1 hour earlier in my flight ... which BTW was NO WHERE near where I should be going. Not only that, but I was on a steady descent from 12,000'. I had no control over my aircraft. Flipping the NAV/GPS button still kept me in autopilot, but the bearing changed as I changed the OBS of the HSI. Altitude continued to descend. So ... this experience has left me wondering, and very confused ... a) If I need to ammend my flight plan by adding points midway, or at the end, that can't be added through FSX, how do I do that? I needed to go to the first point of my destination's STAR, which was not in either FSX or the KLN database.:( How do I delete a point, in this case an approach, from my flightplan?c) How did I unknowingly turn on the "autopilot" that was taking me to the approach waypoint at the end of my flightplan. Direct-to???d) And if I inadvertently commenced a direct-to (auto-pilot), how do I disabe it to resume manual navigation? Obviously in this case, the aircraft was flying itself. I needed to disable it to resume.e) What's with the altitude? Why did it assume, where did it get the instruction to descent ... I don't ever recall defining any altitudes?f) How do I use this as an "autopilot" (if it's supposed to perform like one) when I have a flight plan established? I had a hard time keeping a steady altitude. An autopoliot would have helped immensely. Thank you in advance for your patience. I feel this navigational system is quite advanced, but has a steep learning curve and unforgiving to those without a strong grasp of it's operation.

RM Killins

Share this post

Link to post
Share on other sites

  • Tom Allensworth,
    Founder of AVSIM Online

  • Flight Simulation's Premier Resource!

    AVSIM is a free service to the flight simulation community. AVSIM is staffed completely by volunteers and all funds donated to AVSIM go directly back to supporting the community. Your donation here helps to pay our bandwidth costs, emergency funding, and other general costs that crop up from time to time. Thank you for your support!

    Click here for more information and to see all donations year to date.
  • Donation Goals

    AVSIM's 2020 Fundraising Goal

    Donate to our annual general fundraising goal. This donation keeps our doors open and providing you service 24 x 7 x 365. Your donation here helps to pay our bandwidth costs, emergency funding, and other general costs that crop up from time to time. We reset this goal every new year for the following year's goal.

    $10,950.00 of $25,000.00 Donate Now
  • Create New...