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AD/B747/347 - Horizontal Stabilizer Drive Mechanism
Boeing 747 Series AeroplanesBoeing 747 Series Aeroplanes
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Boeing 747 Series Aeroplanes
| AD/B747/347 | Horizontal Stabilizer Drive Mechanism | 8/2006 |
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| Applicability: | Boeing Model 747-100, 747-100B, 747- 100B SUD, 747-200B, 747-200C, 747-200F, 747-300, 747-400, 747-400D, 747-400F, 747SR, and 747SP series aeroplanes. |
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| Requirement: | Action in accordance with FAA AD 2006-10-02 with a revised effective date of3 August 2006.Note: FAA AD 2006-10-02 Amdt 39-14586 dated 28 April 2006 refers. |
| Compliance: | As detailed in FAA AD 2006-10-02. |
| This Airworthiness Directive becomes effective on 3 August 2006. | |
| Background: | This AD results from a report of extensive corrosion of a ballscrew in the drive mechanism of the horizontal stabilizer on a similar aeroplane model. The actions detailed in this AD are intended to prevent an undetected failure of the primary load path for the ballscrew in the horizontal stabilizer 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 aeroplane. |
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James Coyne
Delegate of the Civil Aviation Safety Authority
20 June 2006