The Federal Aviation Administration will delay certification of Boeing’s 737 MAX 10 while it evaluates a newly disclosed software problem, Administrator Bryan Bedford said September 28, adding uncertainty to the arrival of the largest aircraft in the MAX family. Reuters reported that Bedford gave no timetable for approval. The decision makes the regulator’s assessment, rather than an anticipated delivery milestone, the immediate issue for airlines awaiting the jet.

The distinction for travelers is between aircraft airlines hope to introduce and aircraft already carrying passengers. United, Southwest and Alaska told AFP that they were not operating the problematic new software. Bedford said pilots retain control in the scenario under review, while regulators must determine whether the additional workload is acceptable.

A review of cockpit workload

Boeing told AFP that operators were informed in August about a condition in which automated flight guidance may become unavailable during a specific landing scenario. The manufacturer said it had reinforced existing pilot procedures and was developing a permanent software update. The FAA plans a review board and says it will act immediately if it identifies a safety concern.

The setting is a missed approach, when a landing is discontinued. In its general explanation of go-arounds, the FAA describes a routine safety maneuver: the aircraft returns to an appropriate altitude and configuration before making another approach. A pilot may initiate it, or air traffic control may request it. A go-around itself therefore does not establish that an aircraft has malfunctioned.

That context helps separate the maneuver from the software question. The review concerns the assistance available to the crew during a particular sequence, not whether pilots should discontinue an unsuitable approach. Bedford’s remarks reported by AFP frame the unresolved question around workload, rather than an inability to control the airplane.

Why completed testing is not final approval

The FAA’s certification explanation describes a process broader than demonstrating that an aircraft can fly. Regulators review proposed designs and the methods used to establish compliance, conduct ground and flight testing, and evaluate maintenance requirements and operational suitability. Those are distinct parts of determining whether a design is ready for service.

That distinction matters when a manufacturer reports that flight testing is complete. Such an announcement describes progress within certification; it does not substitute for the regulator’s decision. The FAA also describes inspections and review of certification data before individual aircraft receive airworthiness certificates. Approval of a design and acceptance of a particular aircraft are related steps, rather than interchangeable milestones. For readers following an aircraft’s introduction, this is why a successful test campaign, a certification decision and the first passenger flight should be understood separately.

Fleet plans extend well beyond one approval date

Alaska’s published commitments illustrate the scale of airline planning around the model. In its January 7 order announcement, the carrier said it had ordered 105 737-10s and secured rights to another 35. The broader purchase, which also included five 787 widebody aircraft, extended its delivery stream through 2035. These were long-term commitments, not a promise that all the aircraft would arrive together.

The airline described the narrowbody investment as a combination of growth and replacement of aging 737s. It also explicitly retained flexibility to change to a different model if necessary. That contractual flexibility is relevant to interpreting a certification setback: an airline’s order book is not the same thing as an irrevocable passenger schedule. Alaska’s statement does not establish that it has chosen to exercise that flexibility in response to Monday’s announcement.

For passengers, the potential consequences lie in when replacement aircraft and additional capacity become available. The order announcement supports the importance of the model to Alaska’s longer-term plans, but it does not quantify any effect of this delay on ticket prices, routes or departures. Those outcomes would require subsequent airline decisions and disclosures.

Boeing’s earlier timetable faces a new condition

In its July 28 quarterly results, Boeing said certification flight testing had been completed on both the 737-7 and 737-10. At that point, the company anticipated certification in 2026 and first deliveries in 2027. Those dates were company expectations, not regulatory commitments, and the September decision adds a condition to the MAX 10’s remaining approval process.

The same disclosure said Boeing had begun moving 737 production toward 47 aircraft a month and had activated low-rate initial production on its additional 737 line in July. Production progress and certification progress measure different things. Increasing manufacturing capacity does not, by itself, resolve the requirements that determine when a particular variant can enter airline service.

The next meaningful evidence will be the regulator’s assessment and any revised delivery or service plans published by the affected airlines. Until those emerge, the verified change is a delay in MAX 10 approval with no announced duration. The available record supports uncertainty about future fleet introductions; it does not establish a corresponding disruption to a traveler’s existing booking.