Boeing 747 Series Aeroplanes
Boeing 747 Series Aeroplanes
Boeing 747 Series Aeroplanes
| AD/B747/335 | Station 980 Upper Deck Floor Beam | 11/2005 |
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| Applicability: | Model 747-400 and 747-400D series aircraft, as listed in Boeing Alert Service Bulletin 747-53A2503, dated 11 November 2004, or later FAA approved revision. |
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| Requirement: | Action in accordance with the technical requirements of FAA AD 2005-16-10 Amdt 39-14215. |
| Compliance: | As specified in the Requirement document, with a revised effective date of 27 October 2005. |
| This Airworthiness Directive becomes effective on 27 October 2005. | |
| Background: | The FAA received reports of corrosion under the lift cart threshold at the station 980 upper deck floor beam. The actions required by this Directive are intended to detect and correct such corrosion, which could result in a cracked or broken floor beam, extensive damage to adjacent structure, and possible rapid decompression of the aircraft. |
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David Villiers
Delegate of the Civil Aviation Safety Authority
16 September 2005