What does the cryptic crossword clue "After bungling order, he'd be on a plank (8)" mean?

The wordplay uses an anagram. anagram of HE'D + BE + ON + A = BONEHEAD The answer is BONEHEAD.

After bungling order, he'd be on a plank (8)

Independent Cryptic #11877 | 17 Down | 2024-11-02 flower