What does the cryptic crossword clue "Enter body of aircraft for start of journey to Pennsylvania Avenue? (3,5)" mean?

The wordplay uses a charade (building blocks). LOG (synonym="‘enter’") + CABIN (synonym="‘body of aircraft’") = LOGCABIN The answer is LOGCABIN.

Enter body of aircraft for start of journey to Pennsylvania Avenue? (3,5)

Guardian Cryptic #29626 | 4 Down | 2025-02-24 flower