Airworthiness Directive · Amendment 39-9542 · The Boeing Company Airplanes
The Boeing Company Airplanes
Superseded. A later AD replaced this one: AD 2008-17-14. Comply with the one in force.
This AD applies to The Boeing Company 727 Series (all).
The models as the FAA's AD index lists them. The serial ranges, installed parts and exceptions are in the AD itself: read it at the FAA.
This amendment supersedes two existing airworthiness directives (AD), applicable to certain Boeing Model 727 series airplanes, that currently require repetitive visual inspections to detect cracks of the elevator rear spar, and repair, if necessary. This amendment adds new inspections to detect cracks and loose brackets of the elevator rear spar; adds a new terminating modification for the inspections, and expands the applicability of the rules to include additional airplanes. This amendment is prompted by reports of cracking in the spar radii at the tab hinge location of the elevator rear spar on certain airplanes. The actions specified by this AD are intended to prevent cracking in elements of the elevator rear spar assembly, which could result in excessive free play of the elevator control tab and possible tab flutter.
