A few years ago I would have had no doubt... BUT..
After the recent fatal crash here in Jackson that I witnessed ,that given has been reduced to a maybe....
Long story short.... RV-7 crashed and killed two, 5 hours later two National Park Investigators called and asked for a statement, I met them at the FBO and they filled out pages of forms. I then suggested they visit the tower to ask more questions, I called the tower, got permission, escorted them over, met with the tower controller, who happened to be on duty and watched the crash too...
The investigators point blank asked to hear the tapes.. Tower guy said " pound sand... Get a subpoena" and lead out out of the tower... Knowing what his final words were would have helps us prevent digging through that bio hazard wreckage looking for clues...
Spend three days assisting the NTSB investigator. One the 4th day she asked to visit the tower and speak with them... Once again I called and got permission to visit the tower... I escorted her over, went up to the cab and after a few minutes of her quizzing them of weather, traffic, pattern and other stuff she needed for her report, she then flat out asked to hear the tapes......
Once again they told her to "pound sand, get a subpoena" .. I honestly thought she was gonna beat the guys ass right then and there.... We were asked to leave and she finally gave in and I drove her back to her car that was parked in my hangar...
She HAD to get the courts involved days later to hear the tapes...
..
The NTSB apparently doesn't have the pull I thought they did...