noun, noun or participle which takes 'suru', intransitive verb
safe arrival
Used for arriving safely at a destination, often in formal or written contexts such as travel reports or announcements.
無事に安着しました。
I have arrived safely.
安着のご連絡をお待ちしております。
We await your notification of safe arrival.
到着 is the general word for 'arrival', while 安着 specifically emphasizes a safe arrival.
Compound of 安 (an, 'peaceful, safe') and 着 (chaku, 'arrive'). The exact historical derivation is uncertain, but the meaning is transparent from its components.