Airworthiness directives › 2014-15-15
AD 2014-15-15 Airworthiness Directives; Beechcraft Corporation Airplanes
Makes named: beech, raytheon, hawker beechcraft. Models named: MU-300, 400, 400A. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD applies to the airplanes, certificated in any category, identified in paragraphs (c)(1) through (c)(5) of this AD. (1) Beechcraft Corporation (Type Certificate Previously Held by Hawker Beechcraft Corporation; Raytheon Aircraft Company; Mitsubishi Heavy Industries, Inc. Ltd.) Model MU-300 airplanes, serial numbers A003SA through A093SA inclusive. (2) Beechcraft Corporation (Type Certificate Previously Held by Hawker Beechcraft Corporation; Raytheon Aircraft Company; Beech Aircraft Corporation) Model 400 airplanes, serial numbers RJ-1 through RJ-65 inclusive. (3) Beechcraft Corporation (Type Certificate Previously Held by Hawker Beechcraft Corporation; Raytheon Aircraft Company; Beech Aircraft Corporation) Model 400A airplanes, serial numbers RK-1 through RK-604 inclusive. (4) Beechcraft Corporation (Beechcraft Corporation (Type Certificate Previously Held by Hawker Beechcraft Corporation; Raytheon Aircraft Company; Beech Aircraft Corporation) Model 400T (T-1A) airplanes, serial numbers TT-1 through TT-180 inclusive. (5) Beechcraft Corporation Beechcraft Corporation (Type Certificate Previously Held by Hawker Beechcraft Corporation; Raytheon Aircraft Company; Beech Aircraft Corporation) Model 400T (TX), serial numbers TX-1 through TX-13 inclusive.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
Before the accumulation of 7,400 total flight hours or within 6 months after the effective date of this AD, whichever occurs later, perform a radiographic (x-ray) inspection or a borescope inspection for cracking of the horizontal stabilizer rib assemblies, in accordance with a method approved by the Manager, Wichita Aircraft Certification Office (ACO), FAA. Repeat the inspection thereafter at intervals not to exceed 2,400 flight hours. For an inspection method to be approved by the Manager, Wichita ACO, as required by this paragraph, the Manager's approval letter must specifically refer to this AD.
Unsafe condition
This AD was prompted by multiple reports of fatigue cracking in the horizontal stabilizer ribs. We are issuing this AD to detect and correct such cracking, which could result in the failure of the horizontal stabilizer and loss of pitch control of the airplane.
Affected ADs
None.
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The directive text above is reproduced from the Federal Register, a work of the United States government and in the public domain. The separation into applicability, compliance and required actions is TrackAD's.*1