Eighteen months ago, an aircraft had several major alterations done for which there are no STCs. These alterations were entered into the logbook but no 337s were filed. Notwithstanding this, the annual was signed off then and again several months ago.
After the last annual, the approvals were obtained and the 337s were filed.
My question is: Is the last annual sign-off valid now or should the aircraft have a new annual to be legal.
Thanks!
After the last annual, the approvals were obtained and the 337s were filed.
My question is: Is the last annual sign-off valid now or should the aircraft have a new annual to be legal.
Thanks!