—Royal Dutch Airlines (@KLM) June 30, 2019
"We're very happy to have this beauty on board," KLM tweeted.
The airline also confirmed to Business Insider that it was happy with the Dreamliner — and downplayed that the survey answers reflected any loss of confidence in the Boeing.
"We appreciate our long-standing partnership with the Boeing team and we regularly exchange feedback with them," KLM said. "This practice continually improves the airplanes for our passengers and we see that in the performance of our 787 fleet, including the new 787-10 that is now in service."
United Airlines gave the plant above-average marks in its survey results but still noted 20 issues when it inspected a 787-10 that was delivered in April, including two dented panels.
"The safety of our customers and employees is our top priority," a representative for United told Business Insider. "Our teams conduct thorough inspections and reviews of every single new aircraft before it enters service, and we have full confidence in our 787 fleet."
American Airlines complained about a program that allowed Boeing's mechanics to inspect most of their own work, speeding up production by eliminating a second reviewer. The airline said that problems not being caught ended up slowing down the production process, delaying test flights.
A spokesman for American, Ross Feinstein, told Buiness Insider that the airline had full confidence in its fleet of Dreamliners. American has 42 of the planes, with 47 more on order.
"American monitors the manufacturing process of our aircraft on-site, and inspects each aircraft from start to finish," he said. "Prior to taking delivery of any aircraft, our team conducts additional inspections. Lastly, once we take delivery of an aircraft, it is flown to one of our maintenance bases for additional inspections, prior to any aircraft entering commercial service."
Read more: I flew first-class in Delta's 6-month-old A220, the plane Boeing tried to keep out of the US
Airlines inspect and run test flights on newly delivered planes before they begin flying passengers, meaning any production or safety issues should be caught before the plane ever enters service.
"Boeing and our customers demonstrate the highest standards of safety and quality, which is evident by the 787 Dreamliner's excellent record of safety and reliability in-service," Boeing told Business Insider.
However, the process of fixing these issues can take time, and with Boeing already struggling to meet an ambitious production schedule, that can cause logistical problems for both the plane maker and the airline.
When Singapore Airlines received a 787-10 in April, it noticed several missing pieces and a scratched cockpit window, saying that the delivery process was problematic compared with past deliveries of other variants of the jet.
"It doesn't help that resources were stretched, resulting in slow rectification of these issues," the airline said in the survey, according to The Post and Courier.
In a statement provided to Business Insider, Singapore Airlines said it was fully satisfied with the jet.
"We have not experienced significant quality issues with the 787-10 aircraft that we have taken delivery of from Boeing," the airline said.
KLM also said that the Boeing staff seemed to be stretched thin, potentially affecting quality-control standards.
"A lot of Boeing personnel, factory and management, works way too much overtime," the airline said. "In this customer's opinion this reflects in quality and the inability to make schedule."
Etihad, a United Emirates airline based in Abu Dhabi, said that aside from the quality, Boeing was not communicating the delays, which could cause issues when the airline is building its future schedules.
"Consequently, we had to find out the true status of the airline on our own and the hard way," Etihad said. It described the delivery as "very bad and not good for Boeing and Etihad."
The problems come as Boeing faces intense scrutiny over the 737 Max planes, which are built in Boeing's Renton, Washington, factory. Two crashes involving the 737 Max plane in October and March killed a total of 346 people and forced the plane to be grounded worldwide.
Boeing has faced criticism that it rushed development of the Max in order to catch up with its rival Airbus, which had unveiled an updated version of its successful A320 family of planes.
As the Max remains grounded, and Boeing faces mounting costs from delivery delays, the plane maker is more dependent on revenue from the 787 and its upcoming 777X to offset losses.
