<page_title> List of Air Ministry specifications </page_title> <section_title> 1940–1949 </section_title> <table> <cell> 29/43 <col_header> Spec </col_header> </cell> <cell> Airliner version of Lancaster IV - see also B.14/43 <col_header> Type </col_header> </cell> <cell> Avro Tudor <col_header> Designs </col_header> </cell> </table>
Avro began work on the Specification 29/43 of the Lancaster IV.