Impaneled or Impanelled: How To spell?
The word Impaneled is misspelled against Impanelled, which is past tense of "Impanel"
Impanelled has double "ll" is mispronounced as "l"Remember double 'LL' in between the strings impane & ed which should not be misspelled with single 'L'
Wrong Spelling:  impane-l-ed  Correct Spelling:  impane-ll-ed 
Explore spell check of Impanelled to spell without errors.