INSPECT DRIVE SHAFTING ON AIRCRAFT
Inspect all drive shafts in same way.
Typical shaft shown.
Rotate shaft as needed to do a
Tube and adapter are balanced
together. it one is damaged, both
must be replaced.
Inspect shaft (1) for damage listed below. There
shall be no such damage.
No cracks in tube (2) allowed. If a crack is
suspected in drive shaft tube, refer to TM
No dents in tube (2) more than 1 inch
diameter or 0.040 inch deep allowed.
No two allowable dents shall be closer than
No more than one allowable dent around the
circumference of tube (2) at any one point.
No dent within 1.25 inches of end flange (3).
Loose or cracked rivets (4) at ends of tube.
Adapters have a shotpeened surface.
Damage cannot be repaired.
Cracks, nicks, scratches, or gouges in
adapter (5). Use a five power magnifying
glass to check. If a crack is suspected in drive
shaft adapter, refer to TM 1-1520-253-23.