On 8 July 2018, a Boeing 737-800 discontinued three consecutive approaches at its intended destination Toyama because, despite unexceptional weather conditions, it was in each case, impossible to achieve or continue a stabilised approach within the operator's applicable criteria. Diversion to the designated alternate was then commenced with just sufficient fuel to reach it without using final reserve fuel. However, en-route the crew became concerned at their fuel status and ATC initially had difficulty receiving their emergency communications resulting in a MAYDAY declaration. An expedited routing then followed with a landing which just avoided the use of final reserve fuel.