Document ID: chunk:federal_register_of_legislation:F2010L01658:reg:65:p3
Version: federal_register_of_legislation:F2010L01658
Segment Type: reg
Provision Reference: reg 65 (pt 3/3)
Character Range: 10973–13058

fittings that have reached the life specified in the retirement schedule may not operate until the operator has completed a review of the Beech SIRM to determine if it inspects these parts at all of the probable locations and considers all possible modes of damage due to fatigue, corrosion or accidental damage, per FAR 23.573(b).  If the review shows that the SIRM does not fulfil this requirement, supplemental inspections with appropriate inspection intervals must be developed to inspect the locations that are not inspected by the SIRM.  It is the owner/operators responsibility to develop these additional inspections and no reliance should be placed on CASA to develop these inspections.

   Background of previous revisions to this AD.

   The Queen Air fatigue lives were previously promulgated by AD/BEECH 65/19, 20 and 21.  They were reviewed in the course of assessing a re-engining modification which is applicable to all models.  This review showed some inconsistencies in the lives, having regard to the fact that a range of models have structurally similar wings and should thus have the same life for a given configuration/weight etc.  The inconsistencies have been resolved and all retirement lives now relate to a common basis of either short span or long span wing.  Differences between models are accounted for purely because of weight/configuration.

   Lives for some models have been extended slightly, but it has been necessary to reduce the 65-A80 life by 500 hours.  A separate life has also been listed for the
   65-A80-8800 which may appear to be a life reduction, but which is in fact consistent with the 65-A80 life taken in conjunction with the increased weight, in accordance with NOTE 1.

   Because of the availability of modifications which may increase the MTOW for some models and hence lead to a life reduction, it has become necessary to list lives for the 65, 65-80 and A65 (short span) models which were previously not published because they were so long.

Mike Higgins
Delegate of the Civil Aviation Safety Authority

16 June 2010