In the early 1960s, DCA concerns over the continuing airworthiness of the synthetic resin glues used in the construction of certain wartime and early post-war aircraft led to the wholesale grounding and near extinction of several types.

The grounding order was prompted by the investigation of an accident involving a Percival Proctor V, VH-AIE, which broke up in flight near Wiluna, WA on 25 August 1962. The aircraft had only flown 655 hours in its 16 years. Then a Miles Messenger in Queensland, VH-AVD, had its aileron control cables jammed on 14 November due to the timber structure carrying the aileron control arm breaking away at its glued joints, however the aircraft landed safely. Both aircraft had complied with all maintenance and inspection requirements to keep their Certificate of Airworthiness (CofA) continually renewed and both had been always hangared, but in hot climates.

On 21 September 1962 the Minister announced that the CofAs for six types, totalling 28 individual aircraft, would not be valid after 31 December 1963 and, furthermore, that they were immediately banned from carrying passengers. This action was due to their wooden structures utilising synthetic resin glues which were proven to have deteriorating strength due age and high temperatures. The affected types were:

DCA concern over certain glues also caused them to order a modification to early production Yeoman YA-1 Cropmasters, an agricultural derivative of the Commonwealth Aircraft Corporation CA-6 Wackett which had received type-certification with the Wackett's original wooden tailplane. In 1962 Yeoman were ordered to replace the tailplane with an all-metal design, which superseded the original wooden unit at great expense to Yeoman and the ag operators.