Wed, Jan 23, 2008
AD NUMBER: 2008-02-04
MANUFACTURER: Eclipse Aviation
SUBJECT: Airworthiness Directive 2008-02-04
SUMMARY: We are adopting a
new airworthiness directive (AD) that supersedes AD 2007-13-11,
which applies to all Eclipse Aviation Corporation (Eclipse) Model
EA500 airplanes. AD 2007-13-11 was prompted by reports of loss of
primary airspeed indication due to freezing condensation within the
pitot system.
AD 2007-13-11 requires operational limitations consisting of
operation only in dayvisual flight rules (VFR), allowing only a VFR
flight plan, and maintaining operation with two pilots.
Since we issued AD 2007-13-11, Eclipse developed a design
modification to the pitot/angle-of attack (AOA) system to eliminate
the possibility of freezing condensation within the pitot/AOA
system. Eclipse is incorporating this modification during
production on Model EA500 airplanes starting with serial number
(S/N) 000065. Consequently, this AD limits the applicability to
airplanes under S/N 000065 and requires incorporating the
modification. This AD also retains the operating limitations in AD
2007-13-11 until the modification is incorporated.
We are issuing this AD to prevent long- term reliance on special
operating limitations when a design change existsthat will
eliminate the need for the operating limitations. Incorporating the
modification will prevent loss of air pressure in the pitot system,
which could cause erroneous AOA and airspeed information with
consequent loss of control.
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