The antigravity specialists can do it.
AF447 disappeared close to the equator, a line of high energy, maximum centrifugal powers.
Ships, planes, people disappear all the time.
In 2003 the US Pentagoners had a real hard struggle to conquer Iraq.
UFOs over Baghdad. US Air Force lost one B-2 allegedly with an A-Bomb to deliver 'Shock and Awe' over Baghdad and two escorting F-117 stealth bombers to nowhere.
No traces. Nothing.
Did the real inventors of the B-2 bomber type just take a few machines back for a thorough check-out or to prevent mis-use?
bye bye american pie