Airbus Investigates Fuselage Flaw Affecting 500 A321neo Jets

Airbus is investigating a manufacturing flaw affecting approximately 500 of its A321neo jets after discovering gaps in a protective primer on certain fuselage components. The planemaker confirmed the issue, which originated with a supplier, but stated that aircraft safety is not affected and has outlined a repair plan to minimize disruption for airlines.

Nature of the Flaw

The quality issue involves missing protective primer on strengthening rods, known as stringers, in a forward fuselage section of the A321neo. According to a Reuters report, the flaw was found when a technician discovered the absence of the anti-corrosion layer beneath the paint. This primer is crucial for preventing corrosion over time in the lower part of the fuselage where moisture can accumulate.

The investigation is focused on a coatings supplier, TESI, which is a sub-contractor for Italian aerospace firm Leonardo. Leonardo is one of two suppliers for the affected fuselage section. According to sources familiar with the matter, engineers from both Airbus and Leonardo are at the TESI facility to determine the cause of the problem and support recovery efforts.

Market Impact and Repair Plan

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Of the roughly 500 aircraft involved, about 250 are at various stages of production, with the remainder already in service. While the flaw raises fresh concerns about supply chain oversight, the immediate operational impact may be less severe than initially feared.

Key details of the resolution plan include:

• Airlines taking delivery of affected jets will have two years to complete the necessary repairs.
• The repair work is expected to take up to nine days, significantly less than the standard four-year maintenance cycle for such inspections.
• Critically, the affected parts will not need to be removed from the fuselage panels, simplifying the repair process.

Despite this being the second fuselage-related issue for Airbus in less than a year, the company reaffirmed its 2026 delivery target. However, analysts note the incident highlights persistent vulnerabilities in the global aerospace supply chain. "The supply chain is still not under control; we thought it was but it isn’t," aviation analyst Rob Morris told Reuters. "It just takes one company and suddenly you have a problem."