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Thu, Dec 13, 2007

AD: Boeing

AD NUMBER: 2007-25-18
MANUFACTURER: Boeing
SUBJECT: BOEING - AIRWORTHINESS DIRECTIVE 2007-25-18
SUMMARY:
The FAA is adopting a new airworthiness directive (AD) for certain Boeing Model 747-400 and 747-400D series airplanes.

For certain airplanes, this AD requires modifying the stowage binladder of zone E, installing new intercostals, removing existing tie rods, and installing new tierods. For certain other airplanes, this AD requires modifying the lateral shear beam.

This AD results from a report indicating that the overhead lateral shear beam aft of main entry door number 5 reacts to certain loads from the weight of the center stowage bins of zone E and additional loads.

We are issuing this AD to prevent detachment of the center stowage bins of zone E at forward load levels less than 9g during an emergency landing, which could cause injury to passengers and/or crew and could impede subsequent rapid evacuation.

FMI: www.faa.gov/regulations_policies/airworthiness_directives/

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