Document ID: chunk:federal_register_of_legislation:F2006L01297:body:0:p2
Version: federal_register_of_legislation:F2006L01297
Segment Type: other
Provision Reference: 
Character Range: 2776–5746

visual, above floor level, inspection of the stringers and beltframes for evidence of cracks at all stringer to beltframes attach points between stations 140 and 889.  Perform a repetitive detailed visual inspection of all stringer to frame attachment, above and below floor level, for evidence of cracks between stations 140 and 889.  Refer to Requirement 6 for reduction in repetitive inspection interval.

      4. For aircraft with more than 25,000 hours time in service up to and including 35,000 hours time in service, perform an initial detailed visual, above the floor level, inspection of the stringers and beltframes for evidence of cracks at all stringer to beltframe attach points between stations 140 and 889.  Perform a repetitive detailed visual inspection of all stringer to frame attachment, above and below floor level, for evidence of cracks between stations 140 and 889.  Refer to Requirement 6 for reduction in repetitive inspection interval.

      5. For aircraft with less than 25,000 hours time in service, and have not previously been inspected for cracks, perform an initial detailed visual, above the floor level, inspection of the stringers and beltframes for evidence of cracks at all stringer to beltframe attach points between stations 140 and 889.  Perform a repetitive detailed visual inspection of all stringer to frame attachment, above and below floor level, for evidence of cracks between stations 140 and 889.  For those aircraft which have been previously been inspected in accordance with the above initial inspection, accomplish the above repetitive inspections at the intervals required by Requirements 1 through 4.  The first above repetitive inspection must be accomplished before accumulating 28,000 hours time in service or 10,000 additional hours time in service from the above initial inspection, whichever occurs later.

      6. The second inspection, for aircraft affected by Requirements 3 and 4, will be within the 7,500 or 10,000 hours time in service as specified; however, for subsequent inspections, the interval will be based upon the aircraft time in service at the time of the last inspection rather than the total time in service which results in the aircraft reaching the next category.  If the last inspection was accomplished when the aircraft had more than 42,000 hours time in service, all subsequent inspections must be at intervals not to exceed 5,000 hours additional time in service.

   If cracks are detected during any inspection, before further flight, repair in accordance with the applicable structural repair manual.

   Note:  FAA AD 74-16-01 Amdt 39-1904 refers.

Compliance:     1. Unless already accomplished, within 300 hours time in service after 8 June 2006, unless accomplished within the last 4,700 hours time in service.

                  a. Within 5,000 hours time in service after the initial inspection.

                     (i) Within 5,000 hours time in service