For this video, I show you how I use the Horizontal Situation Indicator (HSI) to visualize my position with regards to the NDB I’ve tuned and identified. (Please note I am unable to identify the navaids in this video because the atmospheric volume was turned down too low to hear the morse codes) When I was first taught to fly, there were no moving maps, so you had to visualise your position in relation to the navaid using the HSI. Please note, I do use the GPS as a source for distance, since NDBs do NOT provide any source of Distance Measuring Equipment (DME).
Download the Latrobe Valley (YLTV) NDB-A Approach Plate PDF used for this video. Please note; this PDF is not to be used for Navigation. This model of the Beechcraft Duchess BE76 displays the NDB position with the ‘Fixed Card’ Automatic Direction Finder (ADF) needle. The HSI (the Directional Gyro with the CDI overlay) is used to display the track I want to fly with regards to the NDB. The HSI was tuned into the GPS instead of any VORs (there are no VORs in the YLTV area) primarily to remove the Red Flag displaying on the HSI.
The HSI and NDB are my primary focus for this NDB approach. I use a combination of the HSI, the CDI and the ADF needle to visualize the aircrafts position with regards to the NDB. From the HSI visualization, I am able to determine what I need to do next to fly the NDB approach.
The HSI is a slaved Directional Gyro (DG) with the VOR / ILS information over layed on top of the DG. This is very handy for IFR flying. The HSI, just like a VOR, has 360 degree around it.
Please keep in mind, I am not a flight instructor. This video is showing you how I use the HSI to visualise my position from either NDBs or VORs.
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