Legally no. You need at least one calibrated reference point which your Ipad app doesn't have. One option is to rent a master compass and perform the final check then.
Also at Georgetown, KGTU
Thanks both! Probably Kxco will be closer, about 100 nm, I am south Of the HOU Class B………
Its the certification of the compass rose that makes it the preferred method. Unfortunately, as the industry moves to that new technology the demand for certified compass roses has dropped considerably, which require periodic recalibration just as runway designations do to compensate for the shift in the overall magnetic field.
I you plan to use that rose to sign off a compass swing, be sure to call before you go to ensure their compass rose calibration is current.
Maybe ask the AP who is installing the G5. Following Garmin’s directives for accuracy is his responsibility.
It may be precise, but is it truly accurate? There is a difference. Trusting a mass market consumer device to calibrate an aircraft navigation device is not a good idea. In instrument calibration, it's all about traceability to a known standard.
I'd be interested in learning what you find out. My experience with a small handful of compass roses in a fairly small area was, let's just say, "educational."
That pretty much matches my experience, which was along the lines of "Everybody uses it, nobody knows when it was last surveyed." Turns out nobody really cares all that much, too.
FWIW: Its only become limited at the basic field mx level with the loss of all the compass roses. The move to glass cockpits 30 years ago, shifted the industry requirements toward using more master compasses and the development/use of digital compasses which make up 90+% of the work performed. Years ago, I found it much easier (and cheaper) to rent a master compass for a week than looking for and traveling to a proper compass rose.
How much is it to rent it For week? Is that the way avionics shops do it?
I don't know the current rates, but when I did I could rent a master compass from a national vendor for $150 per week plus ship. I also was able to "borrow" same from a local CRS for a small fee.
Yes.
