Airworthiness Directives (ADs)
CAA-2012-01-004
The aircraft owner or operator shall comply with Airworthiness Directives issued by the CAA or the aeronautics authority of the State of Design (SoD) of the aviation products, appliances and parts, and take all necessary actions thereto.
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Issue Date
- 2012/01/11
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Applicability
- To all Model 737 airplanes
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Model Number
- Boeing Model 737 airplanes.
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CAA AD Number
- CAA-2012-01-004
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Aeronautics Authority of Original AD
- FAA
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Original AD Number
- 2011-27-03
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Effective Date
- 2012/02/10
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Subject
- To prevent an undetected failure of the primary load path for the ballscrew in the drive mechanism of the HSTA and subsequent wear and failure of the secondary load path, which could lead to loss of control of the horizontal stabilizer and consequent loss of control of the airplane.
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Reference Publications (Revision/ATA/SB)
- ATA 27. Ref. Boeing Alert Service Bulletin 737-27A1278, Revision 1, dated January 7, 2010, and Boeing Alert Service Bulletin 737 27A1277, Revision 2, dated January 8, 2010.
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Remarks
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