CHICAGO (Reuters) -United Airlines Holdings ( UAL ) on Tuesday forecast stronger-than-expected earnings in the current quarter, after reporting a narrower-than-expected loss in the first quarter, on robust demand for travel.

Shares of the Chicago-based carrier were up about 5% in after-hours trading.

United also slashed its total aircraft delivery estimates for this year to 66 from 88 expected in February, citing Boeing's ongoing safety crisis.

It had to ground its Boeing 737 MAX 9 fleet following a January mid-air cabin panel blowout on an Alaska Airlines flight, resulting in a $200 million hit in the first quarter.

The Jan. 5 incident has placed a question mark over certification of the larger variant MAX 10, which was due for deliveries this year and was to be the cornerstone of United's fleet. It has also raised doubts about Boeing's ability to meet aircraft delivery commitments this year.

United received just seven planes in the first quarter, compared with 23 a year ago, according to the planemaker's delivery data.

The airline said it has converted a portion of MAX 10 aircraft orders into MAX 9 for deliveries from 2025 through 2027. It has also retained the right to convert more MAX 10 orders into MAX 8 or MAX 9 as needed.

As a result, it expects to take deliveries of on average 100 narrowbody aircraft per year between 2025 and 2027. This includes 35 Airbus A321neo jets that it will secure from aircraft lessors.

"We've adjusted our fleet plan to better reflect the reality of what the manufacturers are able to deliver," United CEO Scott Kirby said.

In the short run, it expects a small number of jets that were previously scheduled to enter service in the June quarter to be pushed into the third quarter. The change, however, is expected to have minimal impact on its capacity plans.

The aircraft delivery delays have reduced the airline's aircraft utilization, leaving the company overstaffed. United has paused pilot hiring for May and June and offered voluntary unpaid leave to its pilots.

It reported robust demand for domestic and transatlantic flights, along with a pickup in corporate travel spending. Last week, rival Delta Air Lines forecast the highest second-quarter revenue in its history.

United expects an adjusted profit in the range of $3.75 to $4.25 a share in the quarter through June. Analysts expected the company to report a quarterly profit of $3.76 a share, according to LSEG data.

Adjusted loss for the first quarter came in at 15 cents a share, narrower than analysts' expectations of a loss of 57 cents per share. United reaffirmed its 2024 profit estimate of $9-$11 a share.

The company will discuss the results on a call with analysts and investors on Wednesday morning.