Fri, Jun 10, 2005
AD NUMBER: 2005-12-02
MANUFACTURER: Revo Incorporated
SUBJECT: Airworthiness Directive 2005-12-02
SUMMARY: The FAA is adopting a new airworthiness
directive (AD) to supersede Airworthiness Directive (AD) 98-10-12,
which applies to all Revo, Incorporated (REVO) (Type Certificate
1A13 formerly held by Colonial Aircraft Company, Lake Aircraft
Corporation, Consolidated Aeronautics, Inc., and Global Amphibians
LLC) Models Colonial C-2, Lake LA-4, Lake LA-4A, Lake LA-4P, and
Lake LA-4-200 airplanes. AD 98-10-12 currently requires you to
ensure adequate clearance between the attachment fitting and the
horizontal stabilizer rear beam and between the attachment fitting
and the stabilizer skin with inspections, possible replacement, and
adjustments as necessary.
This new AD is the result of several reports of fatigue cracks
found in the horizontal stabilizer attachment fitting (part number
2-2200-21) of Model LA-4-200 airplanes that were in compliance with
AD 98-10-12. This includes an airplane accident with a fatality
attributed to a fatigue crack in the horizontal stabilizer
attachment fitting. Consequently, this AD requires either a dye
penetrant inspection of the horizontal stabilizer attachment
fitting for any evidence of fretting, cracking, or corrosion (with
necessary replacement and modification) or replacement of the
fittings depending on the number of operational hours on the
fitting. The AD also requires you to repetitively replace the
fitting every 850 hours time-in-service (TIS), repetitively inspect
(visually) the fittings between replacement times, and report to
FAA the results of the initial inspection and any cracks found on
repetitive inspections. We are issuing this AD to detect, correct,
and prevent future cracks in the horizontal stabilizer attachment
fitting, which could result in failure of the horizontal stabilizer
attachment fitting. This failure could result in loss of control of
the airplane.
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