https://www.themarker.com/markets/.premium-1.8850705
Article behind paywall - it seems that El Al has lost potentially some $140 million due to hedges on the price of jet fuel. Since the price has collapsed, El Al has to put down an additional $49 million collateral on the hedges. If the price of jet fuel goes up then the loss can be minimized.
Another hedge on the Libor interest rate will cost El Al another $50 million.