Boeing 767 freighter, KC-46 tanker face delivery snags due to fuel tank problem

'Quality issue' has not changed Boeings delivery plans

A new supplier problem has stymied deliveries of Boeing's 767 freighter and KC-46 tanker, the company confirmed on Tuesday.

According to a March 6 report by aviation publication The Air Current, Boeing has not delivered any 767-based jets in 2023 due to a quality issue surrounding the center fuel tank made by Triumph Group's aerospace structures unit, which did not complete cleaning and paint adhesion processes before delivering the items.

In a statement on Tuesday, Boeing acknowledged a "quality issue" had forced the company to rework 767Fs and KC-46s before delivery, but said it had not changed its delivery plans for the year.

A Delta Air Lines plane flying

Delta Air Lines Boeing 767 aircraft as seen flying over Myrtle avenue during a summer day for landing at London Heathrow Airport LHR, a famous spot for planespotters, The arriving Boeing B767-400 wide-body passenger airplane has the registration N830 (Nicolas Economou/NurPhoto via Getty Images / Getty Images)

Boeing declined to comment on when the issue was first identified and how many aircraft could be affected by the problem, which requires the primer inside the fuel tank to be removed and then repainted.


The Air Current reported that it could impact more than a dozen aircraft in Boeing's inventory as well as delivered planes stretching back to 2021.

Triumph declined to comment on the matter, saying it had sold its aerostructures unit in July 2022. It is unclear whether the affected fuel tanks were made by Triumph or under the unit's new ownership of Daher Aerospace Inc.

KC-46 Refuels an AV-8 Harrier (Boeing)

The U.S. Air Force did not immediately respond to a request for comment.


The 767-related issue is the latest evidence of the hurdles facing deliveries and adds further texture to a challenging industrial picture ranging from supply chain pressures to internal snags at both Boeing and Airbus.

On Monday, Leeham News reported a software problem had delayed some 737 MAX deliveries by up to a year. The problem concerns the Option Selection Software used when an aircraft built for one customer has to be reconfigured before being delivered to a different customer.

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A Boeing spokesperson told Reuters the issue "does not affect the timing of Boeing airplane deliveries and has no impact to our delivery outlook." Boeing expects to deliver at least 400 of its bestselling 737 MAX narrowbody planes in 2023.

Boeing 737 Max landing

A Boeing 737 Max jet prepares to land at Boeing Field following a test flight in Seattle, Sept. 30, 2020. According to a note Monday, Jan. 30, 2023, to employees from Stan Deal, the CEO of Boeing's commercial-planes business, Boeing will add a fourth (AP Photo/Elaine Thompson, File / AP Newsroom)

Boeing characterized the problem as a documentation issue that will not require rewriting software, and which mostly impacts aircraft that have already been delivered.

The story prompted a series of broadly similar analyst notes noting the topic was not new, though it has not apparently previously been reported by media or analysts.

"The potential impact could be delays for 30-40 aircraft," wrote Jefferies analyst Sheila Kahyaoglu.


Meanwhile, deliveries of the widebody 787 Dreamliner remain paused due to a data analysis error related to the aircraft's forward pressure bulkhead. Boeing has not changed its delivery target of 70 to 80 Dreamliners this year.