The investigation continues on the Air France crash north of Brazil. More than 40 bodies have been recovered, but there is very little in the way of evidence that will link us to answers anytime soon.

They did discover a majority of the tail intact, which suggests that the plane broke up in the air, not in the water.

And that’s basically the sum total of what we know.

It’s not enlightening, and there’s certainly no closure of the families of victims. This may be one of those accidents where we may never definitively know what happened.

I do find it interesting that there were some instrumentation issues on the planes, which apparently the airline knew about. Now they’re replacing the air speed monitors on all of its long-haul aircraft.

And guess who’s mad? Other Air France pilots. Gee, I’m shocked.

That goes back to an issue I’ve been talking about for years. Once you identify the problem, you’ve identified the solution, and you can implement the solution but choose not to do so immediately—I’m not saying that happened in this case, but it’s happened in so many other cases—in my book, that constitutes criminal negligence.

They’re investigating the specific behavior of some of the inertial guidance systems and navigational systems aboard that plane, and aboard other A330s that are susceptible to misreading air speeds in situations like that plane encountered between Rio and Paris.

Some other news … this week Delta announced a 20 percent cut in its international service.

Most of it kicks in at the end of August, but listen to this: No more service between Atlanta – Seoul; Atlanta – Shanghai; Cincinnati – Frankfurt; Cincinnati – London; New York – Bucharest; New York – Edinburgh. Additional suspensions include Atlanta – Prague, Atlanta – Stockholm, Atlanta – Moscow. And that was the airline that, just about three weeks ago, was announcing new services.

Well, guess what? Nobody showed.

What that also means—yesterday was the Paris Airshow, which is usually the clash of the Titans. Airbus and Boeing compete to see who’s going to sell the most planes.

But who’s buying planes when they’re cutting service? Whoops. It must have been a pretty boring show. But, at a certain point, airlines do need new planes.

And that brings us to the topic of United Airlines. It has an old fleet—I like to think of it as a “duct-tape special.” They’ve announced new plane orders, but they have no credit. This will be interesting to see who finances the deal when the airline itself can’t get credit for new planes.

So last week I was in Bangkok. We started in Phnom Penh, with a wonderful organization called Airline Ambassadors, where I serve on the board.  We’ve been working with orphanages in Siem Reap and Phnom Penh and in Thailand.

We’re still reeling from the terrible shooting at the Holocaust Museum in Washington, DC last week. Just the other day, I was at another Holocaust Museum in Phnom Penh, called the Genocide Museum. Between 1975 and 1979, when the Khmer Rouge ruled Cambodia, we don’t really know how many millions were killed.

We visited a museum dedicated to making sure that people never forget. It was a former French school that was converted to nothing less than a torture chamber within a series of buildings. It was a haunting, emotional experience, and it’s an essential visit if you’re going to Cambodia.

The reason it’s there is the same reason that we have the Holocaust Museum … so that people never forget the atrocities that were committed. As they say, if you can’t remember history, you’re doomed to repeat it, and we need to remember that history. It was unbelievable to see what was going on.

There are galleries where they attach a human face to all the people who died there, and once you see that, you will never be the same. And that’s a good thing.

By Peter Greenberg for Peter Greenberg Worldwide Radio.

For more from Peter’s radio show from Bangkok, click here.

For more about Peter’s experiences seeing the effects genocide in Cambodia, click here.

Previous Air France Flight 447 coverage:

• Experts Discuss Theories on Crash of Air France Flight 447
• Former NTSB Lead Investigator on Air France Flight 447
• Air France Crash, Acapulco Shootout Top Travel News
• Found Debris NOT From Downed Jet; Air France Issues Warnings, Replaces Sensors
• Wreckage of Missing Air France Flight Identified; Cause Still Unclear
• Debris from Missing Air France Jet Possibly Spotted
• Outlook Grim for Missing Air France Jet
• Travel Safety & Security: Plane Crashes News Archive