Document ID: chunk:federal_register_of_legislation:F2017L00863:body:0:p2
Version: federal_register_of_legislation:F2017L00863
Segment Type: other
Provision Reference: 
Character Range: 3074–5849

identified, stop pins inspected, and the impulse coupling reinstalled on the magneto; if the magneto was removed; identify the magneto by stamping a 1/16 inch letter F in the upper right corner of the identification plate to indicate that this AD and Bendix Service Bulletin No. 623 as in force from time to time have been complied with.;
      8. Reinstall the magneto following the manufacturer's instructions for that task;
      9. Make an appropriate engine log book entry for the above maintenance including recording the magneto serial number to certify that this AD and Bendix Service Bulletin No. 623 as in force from time to time have been complied with;
      10. Inspect all spare impulse coupling assemblies, cam assemblies and magnetos following the same procedures described in Steps 3 and 4 of this AD. If both flyweights are found acceptable in accordance with Bendix SB 623 as in force from time to time, identify the cam assembly by applying yellow Dykem or yellow lacquer to the heel of each flyweight. Stamp F on Data plate as described in Step 7.
   Note 1.  The magneto should be removed from the engine only to the extent necessary to perform the inspection described herein. Depending on the engine application it may not be necessary to remove the harness from the magneto for the inspection procedure.
   Note 2.  All magnetos with the impulse coupling recessed into the magneto flange must have the impulse coupling removed from the magneto to perform the inspection. This is a bench operation and will require the magneto to be removed from the engine and the harness removed from the magneto.
   Note 3.  Whenever an impulse coupling is removed from a magneto, it must be removed following manufacturer's published procedures paying strict attention to Notes and Conditions. Follow manufacturers published procedures, cautions and torque settings upon re-assembly. Any cotter pin Bendix P/N 10-90751-18 removed during disassembly must be discarded and replaced.
   Note 4.  FAA AD 82-20-01 as in force at the time of issue of this AD specifies the above checks "For impulse couplings having less than 300 operating hours".
   Note 5:  The words "as in force from time to time" require compliance with the most recent version of the referenced document.
   Note 6:  FAA AD 82-20-01 as in force at the time of issue of this AD and Bendix Service Bulletin No. 623 as in force from time to time refer.

Compliance:  Within 100 hours of engine operation after 30 November 1982.
             Note 7:  Compliance with AD/ELECT/42 Amdt 1 constitutes compliance with this AD.
             This AD commences on 21 July 2017.
Background:  Engine stoppage, attributed to failure of the magneto impulse coupling, has occurred in two aircraft (less than 200