The company involved in the Fox Glacier plane crash had planned to raise concerns over the plane's inadequate flight manual, which was approved by the CAA.
John Kerr started Skydive New Zealand with Rod Miller, one of the nine killed when the skydive plane crashed in 2010.
The plane was converted from a topdressing plane to a skydiving aircraft, but the plane's flight manual, which was approved by the Civil Aviation Authority was inadequate.
Mr Kerr says the company had planned to raise this concern but then the crash happened.
"The flight manual of the EUF did not not have the information to do a weight and balance check for a skydiving operation. The weight and balance information in the flight manual was for a topdressing aircraft. We had intended to talk to our engineers about this lack of information on the 100 hour check which was due shortly after the September 4 accident."
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