Could this be a breakthrough? A number of objects have been spotted 2500km south-west of Perth; the largest one is 24m long.
The distance from Perth to Penang is 4461 km or 2772 miles. Flying time from Penang to Perth would be about five and a half hours assuming an average commercial airline speed of 500mph and depending on wind speeds. Then there is the added distance to reach the south-west of Perth. So if this was the plane, it could have been in the area after 8.00am, but it may not have had enough fuel to reach that area.

