SEATTLE, WA (MyBellinghamNow.com) – Alaska Airlines briefly grounded all flights on Wednesday due to a technical issue.

The Seattle-based airline said it requested a ground stop for all Alaska and Horizon air flights out of an abundance of caution.

The company experienced an issue while performing an upgrade to the system that calculates their weight and balance. The ground stop lasted for an hour until flights began resuming.

Alaska Airlines said it expected residual delays throughout the day and recommended that travelers check their flight status before heading to the airport.

The grounding came as Senate committees held dual hearings examining allegations of major safety failures at Boeing.