Embraer jet owners must re-test a key safety part after incorrect procedures were used

The US aviation regulator proposes a new rule for certain Embraer EMB-505 airplanes. This rule requires owners to re-inspect the horizontal stabilizer, a part that controls the plane's pitch, because previous tests may have used wrong procedures.

Aircraft parts are tested to strict standards. If the testing procedure itself is flawed, it means a part could be approved as safe when it is not. This proposed rule means that some Embraer jet owners will have to pay for new inspections and potentially replace parts that were previously thought to be fine.