Germanwings investigation is hardly conclusive

Christine Negroni is an aviation journalist and safety specialist who is writing a book on aviation mysteries to be published by Penguin in 2016.

Negroni says the evidence so far shows first officer Andreas Lubitz deliberately flew the plane to a lower altitude.

We know also that the plane wound up crashing into a mountain. The question French prosecutor Brice Robin has not answered is how he knows the co-pilot had that end in mind.

We know the plane was commanded down to a lower altitude after reaching 38,000 feet. We do not yet know why.

We know the Captain, identified in web postings as Patrick Sonderheimer, left the cockpit and was unable to get back in. We do not know that he tried to enter using the door passcode or that the door was blocked beyond the normal locking function. All we know is that the cockpit voice recorder shows he tried to enter by knocking.

There may be reasons for trying to enter by knocking, including confusion or distraction due to alarm.

We know that the first officer Lubitz failed to heed the knocks on the door. We do not know if this was deliberate. We know Lubitz was breathing. Both his inappropriate action in not heeding the knocking on the door and his breathing is consistent with deliberate action OR incapacitation.

We know the plane descended. We do not know if this was via programming the plane to descend or flight by hand by the first officer. A conscious and lucid pilot does not fly a plane into a mountain unless it is deliberate. An addled or unconscious pilot does not see or recognize the threat of a mountain and does. Either one of those options is possible, but the evidence presented so far does not allow conclusions.

Finally, unlike in the United States and other countries, the French judicial authorities are in charge of cockpit voice recorders and flight data recorders, which then makes them available to the air safety agency the Bureau d’Enquêtes et d’Analyses. There’s a reason for this increased oversight: In the crash of an Airbus A-320 in 1988, BEA was suspected of tampering with FDR data.

As a consequence, air accidents in France are seen through the prism of criminality. In other countries seasoned air safety investigators understand there is a multitude of factors that contribute to a disaster and will wait to have all the evidence before drawing conclusions.

This is the only way I can understand how the Marseilles French prosecutor made the tremendous leap of logic in concluding that the first officer “wanted” to crash the plane killing all 150 onboard.

The evidence so far shows Lubitz deliberately flew ​the plane to a lower altitude and a crash resulted. The question not answered in anything I’ve heard or seen is whether he intended for that to happen. This is not a subtle quibble. It makes a monumental difference in what really happened to Germanwings Flight 9295.