Airbus says that there are less than 100 A320 family aircraft globally that require modification before they can return to service after an emergency airworthiness directive issued on 28 November that required an urgent rollback of some flight control software to deal with the potential for it to malfunction during flight. In a statement issued on 1 December, the manufacturer says that out of around 6,000 aircraft that may have been grounded because of the AD, "the vast majority have now received the necessary modifications" to the software on their elevator aileron computers (ELACs). "We are working with our airline customers to support the modification of less than 100 remaining aircraft to ensure they can be returned to service," it adds. The groundings came through a European Union Aviation Safety Agency emergency AD in the evening of 28 November, European time, that warned the latest version of the ELAC software for A319, A320 and A321s of all serial numbers was vulnerable to malfunction during intense solar radiation, potentially causing issues with the flight controls. The AD called for operators with affected computers to replace or modify them before the next flight, largely by rolling back to a previous version of the software in accordance with an earlier operator bulletin from Airbus. Lufthansa says that it began implementing the measures on 28 November and most updated were completed over that evening and on the morning of 29 November. Despite earlier warning of delays and cancellations, as of 29 November it said that no Lufthansa Group airline flights were expected to be cancelled, but there may be minor delays. The grounding could have impacted travel in the US over the busy Thanksgiving holiday period, but most A320 operators there appear to have managed the situation without major incident. JetBlue Airways said on 30 November that it expects to complete the required software updates on its fleet on 1 December. Cirium fleets data shows that it has 221 A320ceos, A321ceos and A321neos in service, plus 11 more A320 family jets in storage. Avianca, which had paused sales on all tickets for travel up to 7 December, said on 29 October that "51% of the A320 fleet has its software fully updated and it is expected that the work of the specialised technicians can be completed in the coming days". Nonetheless, it is continuing its sales pause on tickets for travel up to 8 December. VietJet says that as of the early hours of 30 November that it had completed update on all 69 of its affected A320s and A321s "nearly four hours ahead of the deadline set by aviation authorities and Airbus". AirAsia says that it was able to complete compliance work on all its aircraft within 24 hours across its operations in Malaysia, Thailand, the Philippines, Indonesia and Cambodia. Jetstar said on 30 November that it had applied the update to all affected aircraft but warned that there may still be flow-on impacts to its schedule.

Transavia has named KLM executive Paul Terstegge as its new chief executive, effective from 1 February. The 50-year-old Terstegge, who is now vice-president inflight services at KLM, will succeed Marcel de Nooijer, who will be leaving the company, Transavia says. "With this appointment, Transavia takes the next step in targeted growth, expansion of its European network, and the transition towards a quieter and cleaner future," the airline adds.

Alliance Airlines' parent company Alliance Aviation Services has provided more details of how cost pressures have pressured its margins on its major wet-lease contract with Qantas. Speaking during the company's annual general meeting, chairman James Jackson says that one of the immediate priorities for the board is to "review and seek to renegotiate a major ACMI contract". While he did not name the customer directly, Jackson says that it was a contract entered into in 2021 for 14 aircraft and expanded to 30 Embraer 190-E12s, which corresponds to the number and type of aircraft it operates on behalf of Qantas under the QantasLink brand. Alliance also provides capacity to Virgin Australia and dry-leases five E190s to Airnorth, while it has 66 aircraft in service on its own operations, Cirium fleets data shows. Most of those are used for resource industry charter work. He tells shareholders that the "repricing mechanisms in this contract are not sufficient to reflect industry-wide cost inflation", resulting in Alliance bearing additional costs that would usually be passed onto the customer. Jackson details that the contract was based on "below market value" aircraft and engine purchase costs as it was executed during the Covid-19 pandemic, and as replacement engines and heavy maintenance events were incurred "the ACMI contract cost base increased significantly" and has led to "significant margin erosion". "We are working towards a commercial resolution and will keep the market fully informed," he says. Earlier in the speech, Jackson notes that it continues to work with "a major ACMI customer on a historical contract pricing matter" that is expected to have a A$4.2 million ($2.74 million) impact during the current fiscal year. On 7 November the company disclosed that it expected its profit before tax for the year ending June 2026 to fall to A$46-A$56 million, compared to A$82.1 million reported in the year ended June 2025. In providing that guidance, it cited the contract dispute, A$15 million in additional depreciation and an annualised A$12 million in additional maintenance costs above its budget.