Inside the Breakdown: United Airlines vs. Rolls-Royce

The 45-aircraft A350 order has a tortured 16-year history. United first committed to 25 A350-900s in 2009, converted the order to 35 A350-1000s in 2013, then reversed course again in 2017 by switching back to the -900 variant and adding ten more frames — the same year it handed Rolls-Royce the now-disputed $175 million . Deliveries were repeatedly pushed out, most recently to 2030 and beyond, and many analysts long expected the order would eventually be canceled .

Kirby Draws a Line at the Rio Summit

If the SEC filing was the legal warning shot, Kirby's public comments in New York and Rio were the public execution.

Speaking at the Bernstein Annual Strategic Decisions Conference the week before the IATA summit, Kirby stated that 800–900 aircraft are grounded worldwide due to engine and parts shortages, warning the problem would last "many, many years" . He explicitly blamed engine manufacturers for producing engines too slowly and for durability failures that mean those engines spend more time in repair shops than on wings .

At the Rio summit itself, airline executives on a panel delivered what Aviation Week described as a "stark message" to engine OEMs, demanding they stop delivering products until they are technologically ready . The criticism named next-generation engines from CFM International (LEAP), Pratt & Whitney (GTF), and Rolls-Royce (Trent) alike — all cited for durability failures that erase the fuel-burn gains they theoretically deliver .

On that panel, Kirby drew a deliberate contrast. He positioned GE and Pratt & Whitney as the more reliable partners, implicitly leaving Rolls-Royce as the cautionary tale. The subtext was clear to anyone following United's legal filings: the airline's commercial future points away from Rolls-Royce and toward its rivals.

Rolls-Royce Pushes Back

Rolls-Royce has not accepted United's version of events. James Banks, SVP and Head of External Communications, stated: "We're aware of the issue and are confident in our position. We have complied with our obligations under a series of agreements that stretch back many years" .

The company denies United's breach allegations and refuses to reimburse the $175 million . Notably, Rolls-Royce has also terminated the existing contract and leveled its own accusations against the airline, turning the dispute into a mutual exchange of legal claims rather than a one-sided demand .

United's shares dipped on news of the conflict, reflecting investor concern not just about the $175 million at stake but about the broader fleet implications — without Rolls-Royce's Trent XWB, the A350 order is effectively unpowered, since Rolls-Royce is the exclusive engine supplier for the Airbus widebody program .

The Industry-Wide Engine Revolt

Kirby was far from alone in his frustration. The Rio summit became a platform for multiple CEOs to vent years of accumulated anger over engine reliability:

• ITA Airways — On June 7, ITA's CEO told Reuters the airline is considering a lawsuit against Pratt & Whitney because engine issues have grounded nearly 20% of its fleet, approximately 80 aircraft .
• LATAM Airlines Group — As the host carrier, LATAM's leadership joined the chorus, criticizing engine OEMs for durability failures that have grounded aircraft and cost the industry billions .
• Spirit Airlines — Though not present at Rio, the U.S. budget carrier's recent collapse was cited by IATA Director General Willie Walsh as a symptom of the high-cost environment, and Walsh warned more failures would follow .

The scale of the crisis is staggering. IATA estimates the post-pandemic maintenance backlog and parts crunch cost the industry approximately $11 billion in 2025 alone . A single narrowbody aircraft grounded for three days can generate between $10,000 and $150,000 in direct lost revenue — before accounting for crew disruption, passenger compensation, and emergency logistics .

An Uncertain Path Forward

The United–Rolls-Royce relationship has reached what appears to be a terminal phase. Three factors make reconciliation unlikely in the near term:

1. Active litigation: The breach-of-contract suit is proceeding, with no settlement or court ruling reported as of the summit's conclusion.
2. Fleet strategy shift: With the A350 removed from United's delivery schedule, the airline is expected to lean more heavily on Boeing 787s or alternative widebody aircraft for its fleet modernization .
3. Public positioning: Kirby's praise for GE and Pratt & Whitney — combined with his open disparagement of Rolls-Royce — signals which manufacturers United views as its long-term partners.

A settlement could theoretically revive the A350 order, but the commercial trust required for a multi-decade engine maintenance relationship appears broken. United wants its $175 million back; Rolls-Royce insists it has met its obligations and has no intention of paying. Unless United eventually pivots to a different engine supplier — which would require Airbus to offer an alternative powerplant for the A350, something currently unavailable — the 16-year-old order appears effectively dead.

For the broader industry, the message from Rio was unambiguous: airlines have lost patience with engine makers who promise fuel efficiency but deliver grounded aircraft. As Kirby put it, "the biggest industry structural constraint for the balance of this decade is engines" — and until that constraint eases, the financial pain will continue to fall on airlines and their passengers .