Diet plan for skymasters?

[patrolpilot]

With the addition of the cargo pack, my airplane was reweighed at the last annual:
3,006 @ 140.3

The mechanic and I both did the... "that cannot be right." So, we weighed it again the next day, were careful with the setup, and came out to the same numbers.

I read about the accumulation of debris and fluid traces in the hull over time, and what looks like nothing amounts to something. Mud daubers are a big thing in many locations; we pulled about 130 lbs of mud nests out of the wings of my patrol plane. I kept one because it was so perfect!

[patrolpilot]

I learned about the debris and fluid accumulation in 121 and 135 operations to include corporate jets maintained to a 121 standard. Aircraft are required to be reweighed every 36 months. No physical changes to the plane, but they always gain weight. Our 337s are +/- 50 years old.