You might want to consider a magnetic charger USB charging transfer cable - $8 on eBay. If the suction cup fails and the unit drops to the floor the cable will disconnect and not damage the charging port. Also, if/when someone climbs in the airplane with clumsy feet and steps on the charging card it will disconnect and not rip the connector out of the iPad.
PPL/ASEL 1970 - Sport Pilot since 2007
80 hrs Flying Aeronca Chief 11AC N86203
1130 hrs Flying 46 Piper J-3 Cub N6841H
Bought Flying RV-12 #120058 Oct 2015 with 48TT - Hobbs now 585
LSRM-A Certificate 2016 for RV-12 N633CM
Special Thanks... EJ Trucks - USN Crew Chief A-4 Skyhawk
MJ Stricker (Father & CFI) - USAAF 1st Lt. Captain B-17H