Steelers' Charter Plane Experiences Recurring Mechanical Issues

Steelers' charter plane delayed by mechanical problems after losses in back-to-back weeks.
Issues occurred after Sunday's 30-6 loss to Texans and previous week's 23-18 win over Raiders.
Plane cleared for takeoff more than 4 hours after Texans game ended due to unspecified mechanical issue.
Previous delay required emergency landing in Kansas City due to engine oil pressure problem.
Delays raise concerns over team's travel arrangements and aircraft maintenance.