Document ID: chunk:federal_register_of_legislation:F2006B09027:body:0:p2
Version: federal_register_of_legislation:F2006B09027
Segment Type: other
Provision Reference: 
Character Range: 3484–5337

Not required by this AD                                     30000 hours                                           Not required by this AD
4. See para 4.                                                          Each time a new lift strut or attachment fitting is fitted and subsequently at intervals not exceeding 2500 hours  Not applicable
5. See para 5.                          AN180-26 C2W497                 Not applicable                                                                                                     Each time a new lift strut or attachment fitting is fitted
                                        AN180-26                        Not applicable                                                                                                     5000 hours                                                   Each time a new lift strut or attachment is fitted.
                                        C2W497 used with C2W1115-1/-2                                                                                                                      or 60000
                                        fittings                                                                                                                                           flights which ever occurs first

            Background:  This directive promulgates retirement lives and inspections to prevent/detect fatigue cracking in the lift strut and its attachments. These requirements are based on fatigue testing and analysis carried out by the manufacturer following a number of in-flight failures.

            Amendment 8 draws the attention of operators to DHC SB 2/43, which warns against using the lift strut for mooring the aircraft, attachment of external loads, etc. Such usage may significantly reduce the fatigue life of the lift strut assembly.