This is the 746th most frequent Czech word.
letadla
"Letadla" in English means "airplanes" or "aircraft."
'Letadla' is used as the plural form of 'letadlo', in the nominative case, functioning as the subject of the sentence.
Letadla přistála na letišti.
The airplanes landed at the airport.
'Letadla' is in its plural form and accusative case, functioning as the direct object of the verb 'vidím'.
Vidím letadla na nebi.
I see airplanes in the sky.
Here, 'letadel' is the genitive plural form of 'letadlo', used here to indicate possession or association with 'zvuk'.