MANUFACTURER: Hawker Beechcraft Corporation
(Type Certificate Previously Held by Raytheon Aircraft Company)
Models 1900, 1900C, and 1900D Airplanes SUBJECT: Airworthiness Directive 2009-23-03
SUMMARY: We are
adopting a new airworthiness directive (AD) to supersede AD
2006-24-11, which applies to certain Hawker Beechcraft Corporation
(HBC) (Type Certificate previously held by Raytheon Aircraft
Company) Models 1900, 1900C, and 1900D airplanes. AD 2006-24- 11
currently requires you to repetitively inspect the forward,
vertical, and aft flanges of both the left and right wing rear spar
lower caps for cracks, repair any cracks found, and report the
inspection results to the manufacturer. Since we issued AD
2006-24-11, the manufacturer has developed a modification kit to
install on the wing rear spar lower caps that will terminate the
200-hour repetitive inspection required in AD 2006-24-11.
Consequently, this AD requires installing the new modification kits
on the wing rear spar lower caps and terminates the repetitive
inspections required in AD 2006-24-11 when the kits are installed.
We are issuing this AD to prevent fatigue cracks in the wing rear
spar lower caps, which could result in fatigue failure of the wing
rear spar lower caps. A rear spar failure could result in complete
wing failure and the wing separating from the airplane.