Annual Cost
I have a 1978 337H also. I just had my annual. It cost me $6200,
the lowest I ever payed. This year I had them change all 12 rubber hydraulic lines on landing gear & doors. There would be more lines, but I had the large main gear doors removed 4 years ago. Every year I have them replace some major part that is getting old. Next year I am going to have the windows changed. There are some small cracks starting to appear.
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