A mountain rescue operation is known as a "call-out." Particularly noteworthy call-outs include the extended search for the remains of the crew of Avro Lancaster "TX 264" of No. 120 Squadron RAF, which crashed into Scotland's Beinn Eighe on 14 March 1951. Recovering all the remains took several months, and led to public criticism of the fledgling service from mountaineering groups, which helped prod the RAF to provide specialized personnel, better training, and proper equipment. Less than a year later, an Aer Lingus Douglas Dakota crashed into a mountain near Porthmadog in Snowdonia with 23 people on board, and RAFMRS personnel recovered the remains.