valittu
Pre-takeoff checklist
I've been doing my due diligence, reading NTSB reports on FlyBaby accidents due to airframe failure. Most are wing wire failures, but I came across this 1991 NTSB report about a Flybaby airframe that failed during a flight where the investigators concluded that:
THE INADEQUATE DESIGN BY THE MANUFACTURER TO PROVIDE FOR ADEQUATE PROTECTION FROM MOISTURE ACCUMULATION IN THE FORM OF DRAIN HOLES. CONTRIBUTING FACTORS WERE THE DETERIORATION (WOOD ROT) OF THE WING SPAR ATTACH AND THE LACK OF INSPECTION ACCESS.
The avoidance of moisture accumulation is easy enough to achieve. There's data on designing drainage in the plane and hangaring it would eliminate most moisture accumulation concerns. I do have two questions though:
1. Does the design include or has it been modified to meet the need for inspection access?
2. How do you guys inspect your planes for wood rot and other internal conditions?
I can't image how one could consider buying a flying plane or even a work in progress that was covered and had no inspection access.
THE INADEQUATE DESIGN BY THE MANUFACTURER TO PROVIDE FOR ADEQUATE PROTECTION FROM MOISTURE ACCUMULATION IN THE FORM OF DRAIN HOLES. CONTRIBUTING FACTORS WERE THE DETERIORATION (WOOD ROT) OF THE WING SPAR ATTACH AND THE LACK OF INSPECTION ACCESS.
The avoidance of moisture accumulation is easy enough to achieve. There's data on designing drainage in the plane and hangaring it would eliminate most moisture accumulation concerns. I do have two questions though:
1. Does the design include or has it been modified to meet the need for inspection access?
2. How do you guys inspect your planes for wood rot and other internal conditions?
I can't image how one could consider buying a flying plane or even a work in progress that was covered and had no inspection access.