Finnair has temporarily grounded several Airbus A320 family aircraft, including eight A321-200s, due to safety concerns regarding their seat cleaning method. The airline’s wet cleaning technique has not adequately met the fire safety standards set by the seat manufacturer, leading to approximately 20 flight cancellations per day from October 13 to October 14, 2025. Passengers affected by the cancellations will be offered alternative travel arrangements, refunds, and lodging options.
The incident underlines the critical role of proper cleaning in aircraft maintenance. While aviation materials like polyester and polyurethane foam are durable and flame-retardant, they must be cleaned correctly to maintain their safety properties. Cleaning typically occurs daily, overnight, and during in-depth inspections, which are performed every 18 months.
In the wake of the pandemic, airlines enhanced their cleaning protocols, but many have since reverted to less rigorous practices. While airlines like ANA and Japan Airlines are adopting long-term sanitary changes, others are prioritizing quick turnarounds and cost-efficiency over extensive cleaning.
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