ɪn ˈeɪpɹəl nˈaɪntiːnhˈʌndɹɪd fˈoːɹɾi sˈɪks, ðə skwˈɑːdɹən ɹᵻloʊkˈeɪɾᵻd tə ɹˈɑːf bˈeɪs ˈæmbɚli ænd ɪn dᵻsˈɛmbɚ nˈaɪntiːnhˈʌndɹɪd fˈoːɹɾi sˈɛvən, nˈoʊ. twˈɛnti wˈʌn skwˈɑːdɹən bɪɡˈæn tə ɹᵻplˈeɪs ɪts lˈɪbɚɹˌeɪɾɚz wɪð ˈævɹoʊ lˈɪŋkən bˈɑːmɚz.
In April 1946, the squadron relocated to RAAF Base Amberley and in December 1947, No. 21 Squadron began to replace its Liberators with Avro Lincoln bombers.