RTH off by 10 to 15 feet from home point

[ROD PAINTER]

Had 4 good flights yesterday. No issues. Is it unusual for rth to be off by 10 to 15 feet. I always land manually but was wondering if gps is going bad or can GPS receiver be replaced? Thanks for any input.

 

[tcope]

I'd say 5-10' is about normal. I doubt anything is wrong with your GPS.

 

[Phil56]

Yep I agree with trope. Happens all the time with me

 

[Phil56]

Sorry tcope

 

[stones]

I've seen 10' to 20' as fairly normal.

 

[Meta4]

Had 4 good flights yesterday. No issues. Is it unusual for rth to be off by 10 to 15 feet. I always land manually but was wondering if gps is going bad or can GPS receiver be replaced?

GPS does not have pinpoint accuracy.
If you use it to fix a location 10 times you'll get a number of different points.
The United States government currently claims 4 meter RMS (7.8 meter 95% Confidence Interval) horizontal accuracy for civilian (SPS) GPS.
That means 95% of the time your GPS will be giving you a position within 25 feet.
Most of the time the error will be less than 10 feet but occasionally it can be a little more.