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AD: The Boeing Company Airplanes

AD NUMBER: 2013-14-02

PRODUCT: All Boeing Model 727 airplanes.
SUBJECT: Airworthiness Directive 2013-14-02
ACTION: Final Rule

SUMMARY:  This AD was prompted by reports of spanwise cracks and corrosion in the wing center box upper skin and rear spar upper chord between left buttock line (LBL) 70.50 and right buttock line (RBL) 70.50 at body station (STA) 870.

This AD requires repetitive inspections of the wing center box for cracking around certain fastener rows on the rear spar upper chord horizontal flange; for certain airplanes, repetitive inspections for cracking of the rear spar upper chord radius; for certain other airplanes, repetitive inspections for damage, cracking, and corrosion of the pressure seal; and repair if necessary.

The FAA is issuing this AD to detect and correct cracking and corrosion of the upper skin and rear spar upper chord of the wing center box, which could result in loss of the airplane wing and consequent loss of control of the airplane.

DATES: This AD is effective August 26, 2013.

FMI: AD

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