The wings of Fokker Trimotors were manufactured out of wood laminate ; in this instance , moisture had leaked into the interior of one wing over a period .
The wings of Fokker Trimotors were had weakened the glue bonding the structure .
The wings of Fokker Trimotors were manufactured out of wood laminate ; in this instance , moisture had leaked into the interior of one wing over a period and had weakened the glue bonding the structure .