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United Airlines' Brand-New Polaris Boeing 787-9 Can't Catch A Break: 2 Groundings In 5 Days

United Airlines' newest Boeing 787-9 Polaris aircraft (N61101) experienced two groundings within 5 days in late April, first due to electrical smell in cabin air vents during its inaugural international flight to Singapore, and again during a subsequent test flight. The aircraft has been moved to Houston for maintenance inspections and is currently restricted to domestic operations.

1 May 2026Source: Simple Flying

Why it matters

This impacts United's ability to deploy its premium long-haul product on key routes to Singapore and London, affecting premium cabin passengers and the airline's competitive positioning on these routes. The repeated mechanical issues raise concerns about the reliability of new aircraft deliveries and maintenance protocols.