AD NUMBER: 013-15-14

PRODUCT: All Boeing Model 737-300, -400, and -500 series airplanes.
SUBJECT: Airworthiness Directive 013-15-14
ACTION: Final Rule

SUMMARY: The FAA is superseding airworthiness directive (AD) 2008-06-29, which applied to the product listed above. AD 2008-06-29 required repetitive inspections  of the downstop assemblies on the main tracks of the No. 2, 3, 4, and No. 5 slats and the inboard track of the No. 1 and 6 slats to verify if any parts are missing, damaged, or in the wrong order; other specified actions; and related investigative and corrective actions if necessary.

This new AD retains these requirements and adds an inspection of the slat can interior for foreign object debris (FOD), and removal of any FOD found; modification of the slat track hardware; an inspection for FOD and for damage to the interior surface of the slat cans; and related investigative and corrective actions, if necessary. This AD was prompted by development of a modification by the manufacturer, which, when installed, would terminate the repetitive inspections.

The FAA is issuing this AD to prevent loose or missing parts in the main slat track downstop assemblies, which could puncture the slat track housing and result in a fuel leak and consequent fire.

DATES: This AD is effective September 20, 2013.

FMI: AD