China’s HNA Group has paid a more than 3 billion yuan ($474.5 million) jet fuel bill, ending months of contentious discussions between the embattled aviation-to-financial services conglomerate and a state-run aviation fuel company, two people with knowledge of the matter said.

Facing a cash crunch following $50 billion in acquisitions, HNA settled the bill last week with a cash transfer to China National Aviation Fuel Group Ltd (CNAF), said one of the sources.

HNA Group was not available for comment. A CNAF spokesman said he could not confirm the arrangements.

HNA’s outstanding balance with CNAF, China’s near-monopoly marketer and distributor of aviation fuel, had swelled significantly over the previous six month, Reuters reported last month.

In recent weeks, HNA had offered various solutions to settle the jet fuel bill, including the transfer of stakes in joint venture firms and real estate assets.

"The bill was sorted out after CNAF’s communications with the senior management of HNA Group," the person said.

The fuel supplier normally gives customers one month credit period and the over 3 billion yuan bill was the backlogs that went beyond due dates, the person added.

The best solution for CNAF was cash, the person said, since the transfer of stakes HNA offered would take much longer to materialize.