The Transport Accident Investigation Commission is refusing to apologise to the families of the 2010 Fox Glacier crash victims for its mistakes. TAIC's chief commissioner Helen Cull, QC, says it 's not necessary, and that criticism of the commission was driven by grief. Yesterday TAIC backtracked on some of its main findings on the sky diving plane crash which killed nine people including four overseas tourists. The original report from the Commission said that the weight and balance of the aircraft was the most likely cause. The new TAIC addendum to the report now says the aircraft was probably controllable before the crash. Craig Foss the Associate Transport Minister says he has full confidence in TAIC.