By Ian Bush

By Ian Bush

PHILADELPHIA (CBS) — Federal air safety investigators are holding a hearing Wednesday morning in Washington to determine what likely caused the crash last year in Massachusetts that left seven people dead, including Philadelphia Inquirer co-owner Lewis Katz.

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Previous reports point the finger at the pilots: air safety investigators suggesting they didn’t do the proper checks, and realized too late that a wind gust locking system was on. That kept the jet from taking flight. It hurtled into a ditch and exploded.

“I’m not buying into the NTSB saying this highly experienced crew didn’t do a control check. That’s not possible in my judgment and my experience.”

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Arthur Wolk is the attorney for two of the victims’ families in a lawsuit against Gulfstream and others. He’s waiting to get his first look at the wreckage, which the NTSB will release after the meeting:

“We’re having an inspection in the middle of October.” says Wolk. “We’ll start making some independent judgments, and I’m sure they’ll be different than the ones made by the board.”

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Investigators today also are expected to release recommendations designed to prevent a similar accident.