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pdf Gfa ad 511 issue 4 Popular

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gfa ad 511 issue 4.pdf

Gfa ad 511 issue 4

1.  REPLACEMENT OF THE PROPELLER FORK P/N 10AP-V08 WITH NEW FORK P/N 10AP-V88 ON ALL AIRCRAFT WITH PROPELLERS 10AP-V AND 11AP-V.
2.  MODIFICATION OF THE GEARBOX SUSPENSION OF PROPELLER 10AP-V AND SPACER TUBES OF THE SUSPENSION
3.  PERFORMING EXTRA DYNAMIC PROPELLER BALANCING

Fracture of the propeller fork at the end of its threaded fastening pin, possibly caused by a previous ground-strike, has resulted in the loss of one propeller blade in flight. This Airworthiness Directive is applicable to Stemme S-10V: serial numbers 14-001 to 14-030 and 14-012M to 14-063M & Stemme S-10VT: serial numbers 11-001 to 11-037 fitted with propellers 10AP-V and 11AP-V/Project No 14-006.  Luftfahrt-Bundesamt (LBA) Airworthiness Directive No. 1999-224/5 and pages 1, 4 and 5 of Stemme Technical Bulletin No. A31-10-001 (as amended and approved by the LBA) form part of this AD.