As we intercepted the localizer back course, the localizer signal started swinging erratically back-and-forth (often called course scalloping). This was an autopilot-coupled approach we flew into Salem, OR. What will your MDA be for the approach (without WUSIK fix. The Grand Forks altimeter isnt available, so you have to use the Crookston altimeter. The only positive method of identifying a VOR is by its Morse Code identification or by the recorded automatic voice identification which is always indicated by use of the word VOR following the range's name. of the CDI will match the back course runways. VORs without voice capability are indicated by the letter W (without voice) included in the class designator (VORW). 1) Youre getting ready to fly the LOC BC RWY 17R in your Cessna 172. Localizer Back Course (Bc) Operation Cdi Navigation Source - Aspen Avionics EFD1000H PFD Pilots Manual. So what does it look like when your localizer signal is being impacted Take a look at the video clip below. Flying a localizer approach is pretty straight forward, but flying a back course approach is a whole different animal. It could have been setup as a front course, but then flying it outbound would have required reverse sensing and made its use more difficult. 1 day ago &0183 &32 ILS Course Scalloping. It is located on a mountain at 11000 MSL well south of the airport and angled so the front course is oriented to 303 degrees, but since the procedure is to intercept it and fly it outbound 303 degrees, standard CDI sensing is used to fly it. There is a back course used in the missed approach procedure at Aspen, CO. On a departure procedure, tracking a back course outbound from the runway would use standard sensing. then the PT, then tracking inbound on the localizer uses standard CDI sensing. The course line along the extended centerline of a runway in the opposite direction to the front course, or the localizer course for an ILS (instrument landing system). Flying the full ILS procedure using a standard CDI requires tracking outbound in the localizer and using reverse sensing. Anytime you are flying on either the front course or the back course in the direction opposite of the front course, CDI sensing is reversed. Pushing the BC button on the guidance panel arms BC if the beam deviation is outside the capture range. The flight director generates roll guidance commands for capture and tracking of the BC localizer indicated on the coupled PFD. Tracking on the back course or the front course is the same, that is any time you are fly the front or back course is the direction of the front course, CDI sensing is normal. Localizer/back course symbol in Chart Users Guide Localizer and back course description in the AIM To see the links to the above resources either log into your subscription or if you dont have a subscription get one now by subscribing. A localizer course used to identify an intersection is depicted by a feathered arrowhead symbol on the en route chart ( ). The back course mode is selected by pushing the GP BC button.
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