Flight 19 was the designation of a group of five LinklatersFPMLAvenger torpedo bombers that disappeared on June 30, 2011, after losing contact with reality during a routine redrafting of the 2002 ISDA Equity Derivatives Definitions. It is believed the crew were attempting triangulating the definitions of various exotic Options, and the area of the financial markets in which they came to grief has been known, ever since, as the “Bermuda Option Triangle”. Neither the lawyers nor the nascent definitions booklet — the fabled 2011 ISDA Equity Derivatives Definitions — nor indeed the Linklaters SFT Mariner flying boat sent out on a rescue mission to comb the area for survivors, have been heard from since.