The rush to publish ?
It is very easy to want to rush to publish a report and I do have some sympathy with the argument that witness statements may become blurred with time, however as the witnesses are usually interviewed quickly and statements taken it is likely that any re-interview will find things forgotten in the heat of the moment and/or with other evidence gathered bring a different understanding to the situation.
It is mature reflection of the facts that is needed in air safety investigation not a rush to provide a sound bite for the 24 hour media to misinterpret.