Document ID: chunk:federal_register_of_legislation:F2006B05646:body:0:p2
Version: federal_register_of_legislation:F2006B05646
Segment Type: other
Provision Reference: 
Character Range: 2899–5915

as applicable, must be installed if cracks are found as a result of the required inspection. No repetitive inspection will be required for these affected aircraft models when this bracket assembly is installed;

           or

           For the affected Model PA-28R-180, PA-28R-200, PA-28R-201, and PA-28R-201T aircraft, ream the existing two-piece bushings to an inside diameter of 0.624 inch to 0.625 inch, chamfer the head side of the bushing to accommodate the radius in the shank of the main gear side brace stud, and install the 5/8 inch stud, P/N 78717-02. No repetitive inspections will be required by this Airworthiness Directive when this action is accomplished on both the left and right bracket assemblies. If the bushings cannot be reamed while installed in the bracket (i.e., the bushings are loose), then install a main gear side brace bracket assembly, P/N 95643-06, P/N 95643-07, P/N 95643-08, or P/N 95643-09, as applicable. Models PA-28R-180 with serial numbers 28R-30004 through 28R-31270 and PA-28R-200 with serial numbers 28R-35001 through 28R-35820 and 28R-7135001 through 28R-7135062, may be equipped with a bracket casting identified with casting number 67073-2 or 67073-3 and may require the following modification to P/N 78717-02 for proper installation:

               1. Reduce the length of the stud to 1.688  0.15 inches;

               2. Add additional rolled threads to 1.125  0.015 inches from the flange. Note that the stud is heat treated to 180 to 200 ksi; and

c.         Drill an additional roll pin hole 90 degrees to the existing hole, and approximately 1.480 inches from the flange.

           No repetitive inspections will be required by this Airworthiness Directive when a P/N 78717-02 (or CASA approved equivalent part number) main gear side brace stud is installed in the existing bracket assembly on both the left and right sides; or when a bracket assembly, P/N 95643-06 (or CASA approved equivalent part number), P/N 95643-07 (or CASA approved equivalent part number), P/N 95643-08 (or CASA approved equivalent part number), or P/N 95643-09 (or CASA approved equivalent part number), as applicable, is installed on both the left and right sides.

Piper PA-28 Series Aeroplanes

 AD/PA-28/91 Amdt 1 (continued)

                             Figure 1

           Note 2: FAA AD 97-01-01 R1 Amdt 39-10864 refers.

           Compliance: Within the next 100 hours time in service after 4 January 1996, and thereafter at intervals not to exceed 500 hours time in service.

           The original compliance times of this Airworthiness Directive are unchanged by this amendment.

           This amendment becomes effective on 5 September 2002.

Piper PA-28 Series Aeroplanes

 AD/PA-28/91 Amdt 1 (continued)

           Background: The FAA received reports of main gear side brace stud cracks, and seven associated incidents where the main landing gear collapsed. The actions specified by this Directive are intended to prevent a main gear collapse caused by