AD NUMBER: 2003-07-03 MANUFACTURER: Twin Commander SUBJECT: Airworthiness Directive 2003-07-03 SUMMARY: This amendment adopts a new
airworthiness directive (AD) that applies to certain Twin Commander
Aircraft Corporation (TCAC) Models 690D, 695A, and 695B airplanes.
This AD requires you to initially inspect and modify and
repetitively inspect areas of the wing and fuselage structure for
fatigue damage and modify or replace any damaged parts. This AD is
the result of tests that show that the service life of certain
airplane parts cannot be reached unless an inspection and
modification program (with any necessary replacements or
modifications if fatigue damage is found) is incorporated. The
actions specified by this AD are intended to detect and correct
fatigue damage in the wing and fuselage areas without reducing the
service life of the airplane. Such undetected and uncorrected
damage could result in structural failure with consequent loss of
control of the airplane.