Boeing's head said Monday that restoring the dividend could take three to five years as the company girds for a slow air travel recovery in the wake of the coronavirus crisis.

The comment from Chief Executive David Calhoun was a signal that paying back debt and keeping up Boeing's manufacturing supply chain were bigger priorities than paying dividends for the forseeable future.

Speaking at the company's annual meeting, Calhoun offered a sober outlook on the near-term prospects for commercial air travel in the wake of the virus that is projected to cost the airline industry an estimated $314 billions in 2020 revenues, potentially felling some carriers.

"Based on what we know now, we expect it will take two to three years for travel to return to 2019 levels and an additional few years beyond that for the industry's long-term trend growth to return," Calhoun said.

Even before COVID-19 broke out, Boeing was already under pressure after two crashes of its 737 MAX killed 346 people, leading to a global grounding since March 2019.

Boeing is expected to soon initiate talks with the US Treasury on potential federal support for the aviation giant. Boeing has not said definitively whether it will take federal aid.

Around $17 billion aimed at Boeing was included in the giant federal relief bill approved in late March under the CARES act, which restricts dividends and share buybacks from companies that take aid.

Families of the MAX crashes' victims have petitioned US Treasury Secretary Steven Mnuchin to withhold funding for Boeing unless it meets stringent safety and governance standards, according to lawyers who are representing the victims in suits against Boeing.

- Directors re-elected -

The annual meeting was held remotely in light of the social distancing policies and included brief remarks from shareholders who put forth proposals to reign in executives after the MAX disasters.

Proxy advisor Institutional Shareholder Services had recommended "no" votes on four longtime Boeing directors in the wake of the problems, citing a failure to adequately oversee management strategy and corporate culture.

But all Boeing directors were re-elected by shareholders.

A narrow 52 percent majority of investors did vote against making the chairman an independent member of the board.

Boeing has divided the roles of CEO and chairman as it navigates its current crisis.

Calhoun defended the company's withdrawal from a $4.2 billion deal with Brazilian company Embraer, which has said it will sue Boeing following the move.

Calhoun predicted the airline industry would have a strong recovery once the COVID-19 crisis is contained, but warned of a tough road ahead.

The coronavirus will compel airlines to reconsider the way they manage flights, putting greater emphasis on hygiene.

During a question and answer session with investors, Calhoun was asked whether Boeing expects planes to be reconfigured to meet social distancing guidelines.

"Our customers without a doubt are going to have to create a new relationship with the flying public," Calhoun said, adding that "for all of us, it's going to be an education."

Airline clients are deferring deliveries, suspending payments to Boeing and retiring older aircraft, which hits the company's services business.

All those effects are on top of more than a year of lost revenues tied to the 737 MAX.

"We know we're going to have to borrow money in the next six months," Calhoun said, adding that repaying debt will occupy the company for the next while, impeding its ability to return cash to shareholders.

He also identified maintaining the company's supply chain as a priority, saying "without the supply chain, there will be nothing to assemble."

Shares of Boeing fell 0.6 percent to $128.20 shorty after midday.