On August 16, 2012, a flight instructor and flight student perished when the Piper PA38-112 Tomahawk aircraft crashed in Cheshire, England. While practicing slow speed and stall training exercises and following the procedures in the pilot operating handbook, the aircraft went into an unintentional spin at an altitude from which recovery could not be made. After an investigation by the National Transportation Safety Bureau (NTSB) into numerous stall/spin incidents involving this type of aircraft, an NTSB safety recommendation, and a similar crash in May 2011 involving the same aircraft, a revision to the pilot operating handbook was made to address the stall/spin issue. However, the revision was not published until September 2012.