Boeing's (BA) 1Q net loss narrowed to $561 million from $641 million year-over-year. The plane manufacturer reported a 10% drop in net revenue to $15.2 billion compared to $16.91 billion reported a year ago. Boeing reported an adjusted net loss per share of $1.53 in 1Q versus $1.70 in 1Q 2020. Fewer 787 deliveries was the main driver behind the decline in revenue in the quarter, compounded by lower commercial service volumes. Commercial airplane revenue dropped to $4.3 billion. The revenue loss could have been much higher had the company not delivered more 737s, and supplemented by higher revenue from KC-46A tankers.