In February 1931 , the Squadron replaced their outdated Bristol F. 2Bs with the Westland Wapiti Mk.IIa . The 1935 Quetta earthquake forced the Squadron to relocate to RAF Drigh Road . In June 1937 , No. 31 Squadron 's laurel wreath and mullet squadron badge was officially approved by King George VI . In April 1939 , No. 31 Squadron became a bomber-transport squadron when it inherited Vickers Valentinas from No. 216 Squadron and the Bomber Transport Flight . After re-equipping with the Valentina , the Squadron carried out attacks against Mirzali Khan ( known as the Faqir of Ipi ) during the 1939 Waziristan campaign
1935 Quetta earthquake
1935 Quetta earthquake
No. 31 Squadron RAF