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Planemakers, repair shops and other businesses take measures to conserve aircraft window in a tight market

Companies and industry sources said that planemakers, airlines, and repair shops were conserving aircraft glass after an incident occurred at a California factory. The incident 'worsened shortages for a part required for both new aircraft and regular maintenance.

GKN Aerospace, a leading supplier of cockpit and passenger window products in the world, stopped production at its Los Angeles suburb factory late in May after an overheating fuel tank caused fears of explosion, forcing 50,000 residents to evacuate for several days.

Sources and executives stated that the incident did not affect new plane production or airline operations but it caused delays in parts and concerns about the supply of passenger and cockpit windows.

Boeing, a U.S. aircraft manufacturer, said that it had informed operators of steps to be taken in order to manage the window inventory after the incident.

Boeing told airlines to only replace windows when they are necessary, and not for aesthetic reasons.

Boeing stated in a press release that it "continues to work with our suppliers and is taking steps to mitigate any possible impacts."

GKN is owned by Melrose Industries of London, which produces windows for a number of Boeing models, including the 737 MAX and rival Airbus A220 or A350 jets.

Melrose announced on Friday that it was working to bring the partially open window factory back to full production before the end of 2026.

These shortages are a sign of lingering post-pandemic weaknesses within the supply chain, despite noticeable improvements in part availability this year.

Analysts and companies say that the demand for replacement windows from aircraft maintenance shops is increasing as planemakers increase production, echoing the engine shortage.

Matteo Peraldo is an aerospace and defense partner with AlixPartners. He said, "There's a large aftermarket for window products." "The demand is not only production, but also the aftermarket."

Airbus experienced A220 windows shortages but this did not delay production, according a source familiarized with the program.

A spokesperson for A220 said that GKN Aerospace has restarted production and they have "seen positive progress to date toward a return of normal."

The maintenance provider Lufthansa Technik stated that the supply of aircraft window for both major aircraft manufacturers has been stretched since a long time.

Lufthansa Technik reported that "lead times?have increased substantially, while procurement costs are up markedly."

Lufthansa Technik stated that the supply of windows for most Boeing aircraft is limited to "cases where the part?is absolutely necessary to fix an aircraft grounded."

Private Jets

Window shortages have also affected private jet manufacturers, including Bombardier Canada and Embraer Brazil. Repair shops are also affected.

Eric Martel, CEO of Bombardier, told reporters on Thursday that the impact of the incident on window supply was one of the challenges in the supply chain "we had to manage." GKN Aerospace manufactures windows for Global 8000, the company's flagship jet.

Source: Embraer, the private and commercial jet manufacturer, had already experienced supply issues for aircraft windows. The GKN incident is causing "fresh concern", according to a source.

Kenn Ricci is the chairman of Flexjet, a private jet operator that flies Embraer Phenom?jets and Praetor?jets. He told a U.S. podcast Technology Business Programming Network, in February, that Embraer had stumbling blocks with windows.

Ricci stated, "If you ask Embraer or (Executive Jets president) Mike Amalfitano why your deliveries are slipping, they will say that it is the windows."

Flexjet declined comment. Embraer has not responded to multiple requests for comment. (Reporting and editing by Jamie Freed in Montreal, Allison Lampert)

(source: Reuters)