I have Wi-Fi+cellular iPad Pro 11 and i use jeppesen flite pro. Own symbol (GPS) first part of flight very good but later disappear until landing. I always reset IPad reset network reset location privacy but no solution. Is There any solution?
MacBook Pro 13″, macOS 10.14
Firstly, are you attempting to use the built-in GPS capabilities of your iPad whilst onboard a commercial aircraft (such as an airline), or a smaller GA Aircraft? GPS signals are, essentially, line-of-sight; you must have a clear view of the sky to obtain sufficient satellite signals to both obtain and maintain an accurate position fix.
The built-in GPS receiver will be more reliable in a GA aircraft as the greater window surface area will permit more signals to penetrate the cabin. In commercial aircraft, in particular within the main cabin, any portable GPS receiver (such as iPad and iPhone) will struggle to maintain a position solution; too few satellites will be visible, with good geometry, to maintain a position solution.
The aircraft fuselage will block GPS/GNSS satellite signals. Very often, for reliable operation during flight, it is necessary to utilise a remote GPS/GNSS Satellite receiver (e.g., BadElf) - and connect to your iPad using either a Bluetooth or wired connection.
Firstly, are you attempting to use the built-in GPS capabilities of your iPad whilst onboard a commercial aircraft (such as an airline), or a smaller GA Aircraft? GPS signals are, essentially, line-of-sight; you must have a clear view of the sky to obtain sufficient satellite signals to both obtain and maintain an accurate position fix.
The built-in GPS receiver will be more reliable in a GA aircraft as the greater window surface area will permit more signals to penetrate the cabin. In commercial aircraft, in particular within the main cabin, any portable GPS receiver (such as iPad and iPhone) will struggle to maintain a position solution; too few satellites will be visible, with good geometry, to maintain a position solution.
The aircraft fuselage will block GPS/GNSS satellite signals. Very often, for reliable operation during flight, it is necessary to utilise a remote GPS/GNSS Satellite receiver (e.g., BadElf) - and connect to your iPad using either a Bluetooth or wired connection.
Hi Sevkibas,
It appears that you're iPad Pro was having an issue with GPS during a flight, to where it couldn't be located. Does your iPad Pro have an issue with finding its location via GPS in other apps like the Maps app or it is only happening in this specific app? If yes, then the steps inside this article might help: If an app on your iPhone or iPad stops responding, closes unexpectedly, or won’t open - Apple Support
The title may not match the issue you're encountering, but the steps inside could be helpful as mentioned. Also, the information below, from the following article might be helpful: About privacy and Location Services in iOS and iPadOS - Apple Support
"Improve GPS accuracy
GPS accuracy depends on the number of visible GPS satellites. Locating all visible satellites can take several minutes, with accuracy gradually increasing over time. To improve GPS accuracy:
Take care.
It my understanding that many commercial aircraft incorporate a metallic film/deposition within cockpit windows - principally to provide filter screening from high levels of solar radiation.
Setting aside the limited view of the sky through cockpit windows, which limits direct view of the visible GPS satellite constelltion (in turn significantly reducing DoP - Dilution of Precision), any metallic deposition will attenuate/block the GPS signals.
I would speculate that your iPad is able to initially obtain and maintain a position solution, calculated from visible satellites, whilst the GPS receiver is stationary or moving at slow speed. At higher cruising speeds, following loss of sufficient satellites with adequate geometry, recovering position “lock” is significantly more difficult.
Without delving too much into the intricacies of geometry, doppler and other relativistic effects (that shifts the frequency of the received signals), perhaps suffice to say that fast moving GPS receivers have to not only consistently receive very weak signals from satellites that themselves are moving at high relative speed, but also have to consistently perform very complex mathematics. The faster the GPS receiver is moving, the more difficult it is to compute and maintain a position solution; if the signal from a single satellite is lost, due to geometry, the one satellite may be the difference between keeping or losing lock.
Claire504 thank u for your response i did all your advise. First part of flight gps working very well but mid of my flight (overseas europe-america) own position disappear until hotel. I think Wifi+cell ipad pro also need wifi signal even its wifi closed for finding position accuracy. İf accuracy going outside of the limit own symbol dissapear.
Thank you very much. But on b787 cockpit windows are wide enough for gps signal. maybe they have signal barrier i dont know. I need to ask pilots who have experience with ipad (built-in gps) on b777 or b787 aircrafts.
You are very welcome.
As a historical observation, back in the earlier days of GPS, civilian receivers were limited (by US Legislation) to 90kts - beyond which the receiver was required to stop generating position/speed data - and position accuracy at 95th percentile of 100m. Those days are now, fortunately, long gone.
Limitations are now simply technical - without artificial degredation.
So, why first part of flight gps o.k. Than disappear
Finally understand, nobody use their (onboard gps) ipad for aviation. Dont buy ipad wifi+cellular for aviation unnecessarily :))
thx
GPS PROBLEM Wi-Fi+cellular iPad Pro 11
