By David Shepardson WASHINGTON (Reuters) – The chair of the Senate Commerce Committee on Thursday asked the Federal Aviation Administration (FAA) for answers on its oversight of Boeing’s production systems after a cabin panel blowout on an Alaska Airlines 737 MAX 9 last week. Senator Maria Cantwell said recent accidents and incidents “call into question Boeing’s quality control.” It also appeared the FAA’s oversight processes may not have been effective in ensuring Boeing produced airplanes in a condition for safe operations, she added, noting planemakers are given 50 days of advance notice be…