Document ID: chunk:federal_register_of_legislation:F2007L00378:body:0:p2
Version: federal_register_of_legislation:F2007L00378
Segment Type: other
Provision Reference: 
Character Range: 2788–4359

through -0256 inclusive, before further flight after the effective date of this AD and then repetitively at intervals not to exceed 250 flight hours or 3 months whichever occurs first.

                2. Before further flight.

                3. Within 25 flight hours or 48 days, whichever occurs first, after the effective date of this AD, but before carrying out inspection per Requirement 1 of this AD.
             This Amendment becomes effective on 15 March 2007.
Background:  There have been reports of chafed APU fuel tubes leaking into the tail cone area due to the interference between the fuel tube assembly and elevator flight control cables, hydraulic lines, and high temperature bleed air couplings.  It is an area where ignition sources are present and there is no fire detection or extinguishing provisions.  This interference and the resultant chafing may cause fuel leak and a fire.

             The actions specified in this AD address the safety risks associated with fire and resultant loss of aircraft.

             For certain aircraft serial numbers, this AD also requires replacing the APU fuel line.

             This Amendment adds additional aircraft serial numbers to the applicability section and introduces a terminating action to the repetitive inspections detailed in this AD.  The terminating action involves replacement and modification of the fuel line installation.

             The original issue of this AD became effective on 25 May 2005.

James Coyne
Delegate of the Civil Aviation Safety Authority

2 February 2007