Document ID: chunk:federal_register_of_legislation:F2007L00698:body:0:p3
Version: federal_register_of_legislation:F2007L00698
Segment Type: other
Provision Reference: 
Character Range: 5700–7489

15,000 total flight hours as of the effective date of this AD, do the actions within 12 months after the effective date of this AD.  All applicable corrective actions must be done before further flight.

                For aeroplanes that have accumulated 15,000 total flight hours or fewer as of the effective date of this AD, do the actions within 12 months after the date on which the aeroplane accumulates 15,000 total flight hours.

                Thereafter at intervals not to exceed 6,000 flight hours or 24 months, whichever comes first, until the replacement required by Requirement 2 of this AD is accomplished.

             Note 5:  Any inspection/measurement of the pumps on the left and right main fuel tanks may be done separately provided that the actions are done on all pumps within the compliance time specified in this AD.

                2. Within 36 months after the effective date of this AD.

             Note 6:  Any replacement of the pumps on the left and right main fuel tanks may be done separately provided that all pumps are replaced within the compliance time specified.

                3. From the effective date of this AD.
             This Airworthiness Directive becomes effective on 12 April 2007.
Background:  This AD results from reports that certain fuel boost pumps may not have flame arrestors installed in the pump shaft and reports that the pin that holds the flame arrestor in place can break due to metal fatigue.  The issuing of this AD is to prevent the possible migration of a flame from a main tank fuel boost pump inlet to the vapour space of that fuel tank, and consequent ignition of fuel vapours, which could result in a fire or explosion.

David Punshon
Delegate of the Civil Aviation Safety Authority

23 February 2007