Document ID: chunk:federal_register_of_legislation:F2006L01697:body:0:p1
Version: federal_register_of_legislation:F2006L01697
Segment Type: other
Provision Reference: 
Character Range: 0–3207

AIRWORTHINESS DIRECTIVE
For the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (AD) under subregulation 39.001(1) of CASR 1998.  The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.

Learjet 45 Series Aeroplanes
AD/LJ45/9  Fuel System Contamination  8/2006 TX

Applicability:  Learjet Model 45 aeroplanes, serial numbers 45-005 through 45-295 inclusive, and 45-2001 through 45-2044 inclusive.
Requirement:       1. Review of Aeroplane Maintenance Records

                   Review the aeroplane maintenance records to determine whether inspections identified by the inspection reference numbers (IRNs) in requirements 1(a) and 1(b) of this AD have been done.

                     (a) IRN O2810001, Inspection/Service Requirement, "Wing Tanks" Perform Visual Inspection.  Inspect for corrosion.  (Refer to 5-10-00.), of Bombardier Learjet 45 M45 Maintenance Manual.

                     (b) IRN O2820000, Inspection/Service Requirement, "Low Pressure Fuel Filter" Remove and inspect for contamination.  Clean if necessary.  (Refer to
                     28-20-15.), of Bombardier Learjet 45 M45 Maintenance Manual.

                   2. General Visual Inspections and Cleaning

                     (a) During the records review required by requirement 1 of this AD, if it cannot be positively determined whether both IRNs have been done; Do the following:- Except as provided by requirement 2(b) of this AD, do the actions specified in requirements 2(a)(i) and 2(a)(ii) of this AD in accordance with Chapters 5-10-00 and 28-20-15, as applicable, of the Bombardier Learjet 45 M45 Maintenance Manual.

                        (i) Do a general visual inspection of the inside of the wet wing fuel areas and the fuel pump screens for tape or adhesive tape residue.

                        (ii) Clean the low pressure fuel filter, determining whether tape or adhesive tape residue is present, and do a general visual inspection of the filter for damage before installation.

   Note 1:  For the purposes of this AD, a general visual inspection is: "A visual examination of an interior or exterior area, installation, or assembly to detect obvious damage, failure, or irregularity.  This level of inspection is made from within touching distance unless otherwise specified.  A mirror may be necessary to ensure visual access to all surfaces in the inspection area.  This level of inspection is made under normally available lighting conditions such as daylight, hangar lighting, flashlight, or droplight and may require removal or opening of access panels or doors. Stands, ladders, or platforms may be required to gain proximity to the area being checked."

        (b) If a crew alert system message