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AD/B737/268 - Floor Beams and Pressure Web Transverse Beams above the Main Wheel Well
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Boeing 737 Series Aeroplanes
| AD/B737/268 | Floor Beams and Pressure Web Transverse Beams above the Main Wheel Well | 13/2005 |
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| Applicability: | Model 737-100, -200, and -200C series aircraft, as listed in Boeing Service Bulletin (SB) 737-57-1139 Revision 4, or later FAA approved revision. |
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| Requirement: | Action in accordance with the technical requirements of FAA AD 2001-17-18Amdt 39-12409. |
| Compliance: | As specified in the Requirement document. |
| This Airworthiness Directive becomes effective on 22 December 2005. | |
| Background: | The Model 737 Ageing Fleet Structures Working Group has recommended accomplishment of SB 737-57-1139 Revision 4, which requires repetitive inspections of certain floor beams and transverse beams. For certain aircraft, this Directive also provides optional terminating action for the repetitive inspections. The actions specified by this Directive are intended to detect and correct cracking at the aileron control quadrant cut-outs and in the cabin floor beams and pressure web transverse beams above the main wheel well, which could result in rapid loss of cabin pressure and reduced structural integrity of the airframe. |
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David Villiers
Delegate of the Civil Aviation Safety Authority
11 November 2005