The grounding of Boeing’s global 737 MAX fleet has brought headaches for airlines that need to find alternative aircraft to fly in their place, but it has given some carriers a welcome opportunity to re-evaluate orders for the plane.

Countries and airlines around the world banned the 737 MAX this week after a deadly Ethiopian Airlines plane crash killed all 157 people on board. The disaster followed a fatal crash of the same model operated by Lion Air in Indonesia in October.

For airlines that over-ordered the latest version of Boeing’s 737 workhorse, the grounding could be a good excuse to delay or cancel purchases, saving cash on the balance sheet, analysts said.