Document ID: chunk:federal_register_of_legislation:F2007L00111:body:0:p2
Version: federal_register_of_legislation:F2007L00111
Segment Type: other
Provision Reference: 
Character Range: 2963–6038

601, and the instructions in Chapter 32-10-00 page 602, paragraph c, of PAC Cresco 08-600 MM and PACSL/CR/06-1.

                Replace cracked axles before further flight.

                Re-assemble and lubricate MLG axles in accordance with Chapters 32 and 12 of PAC Cresco 08-600 MM.

             Note 1:  MOD PAC/CR/0442 introduces axles P/N 08-40021-2 as a replacement for axles P/N 08-40021-1, which are no longer available.

             Note 2:  MOD PAC/CR/0443 introduces axles P/N 08-08-40021-3, which have a dye penetrant inspection requirement.

             Note 3:  Torque Plates P/N 08-40055-2 and 08-40056-2 are to be fitted when MLG axles P/N 08-40021-2 or 08-40021-3 are installed.

             Note 4:  ASTM Standard No. E-1444 establishes minimum requirements for magnetic particle inspection examination used for the detection of surface or slightly subsurface discontinuities in ferromagnetic material.

             Note 5:  NZ CAA AD DCA/CRESCO/10 refers.
Compliance:  1.a. and 2.a.  Within 150 hours time in service after 15 February 2007 or before the accumulation of 1,500 landings on the MLG axles, whichever occurs first; unless already accomplished within the last 150 hours time in service.  Thereafter inspect at intervals not to exceed 150 hours time in service or before the accumulation of 1,500 landings on the axles, whichever occurs first.

             1.b. and 2.b.  Within 150 hours time in service after 15 February 2007 or before the accumulation of 1,500 landings on the MLG axles, whichever occurs first; unless already accomplished within the last 300 hours time in service.  Thereafter inspect at intervals not to exceed 300 hours time in service or before the accumulation of 3,000 landings on the axles, whichever occurs first.

             1.c.  For aircraft fitted with MLG axles P/N 08-40021-1:

             Before exceeding 500 hours time in service or before the accumulation of 6,000 landings on the MLG axles, or within 150 hours time in service after 15 February 2007, whichever occurs later.  Thereafter inspect at intervals not to exceed 500 hours time in service or before the accumulation of 6,000 landings on the MLG axles, whichever occurs first.

             For aircraft fitted with MLG axles P/N 08-40021-2:

             Before accumulation of 6,000 landings on the MLG axles, and thereafter at intervals not to exceed 6,000 landings on the MLG axles.

             2.c.  For aircraft fitted with MLG axles P/N 08-40021-3:

             Before accumulation of 50,000 landings on the MLG axles, and thereafter at intervals not to exceed 6,000 landings on the MLG axles.
             This Airworthiness Directive becomes effective on 15 February 2007.
Background:  During a scheduled 500 hour inspection a crack was detected on the MLG axle of a Cresco aircraft.  Inspection in accordance with PAC SL/CR/99-2 confirmed the crack.  There is a known history of cracking of the MLG axle on Cresco aircraft.

David Villiers
Delegate of the Civil Aviation Safety Authority

5 January 2007