IAHL Corporation (IAHL)

[Iggy_Bot]

SUMMARY: We are adopting a new airworthiness directive (AD) for certain
Thrush Aircraft, Inc. (Thrush) Model S2R series airplanes. This AD
requires you to do repetitive visual inspections of the vertical and
horizontal stabilizer attach fitting, attach fitting bolts, and the
vertical fin aft spar for cracks or corrosion. This AD also requires
immediate replacement of the vertical and horizontal stabilizer attach
fittings and attach fitting bolts if cracked or corroded parts are
found, and the inspection of the vertical fin aft spar with repair or
replacement if cracks or corrosion are found. This AD requires the
eventual replacement of the vertical and horizontal stabilizer attach
fittings and attach fitting bolts if no corrosion or cracks are found
as terminating action for the repetitive inspections. This AD results
from reports of cracks in the empennage of Thrush S2R series airplanes.
We are issuing this AD to detect and correct these cracks, which could
cause the vertical stabilizer to lose structural integrity. This
failure could lead to loss of control.

DATES: This AD becomes effective on January 22, 2008.
On January 22, 2008, the Director of the Federal Register approved
the incorporation by reference of certain publications listed in this
AD.