Defaalted or Defaulted: How To spell?

The word Defaalted is misspelled against Defaulted, which is past tense of "Default"

Word contains consecutive vowels 'AU' in between alphabets def & lted is misspelled as 'AA'
Wrong Spelling: def-aa-lted
Correct Spelling: def-au-lted
Explore spell check of Defaulted to spell without errors.