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Dedicated to Repairing Sikorsky Rotor Blades

Dedicated to Repairing Sikorsky Rotor Blades. History. ABS started in June 1994 doing S-55 & S-58 blades. History. 1998 - Pemco needed a shop to complete H-3 blade repairs for an Egyptian contact. Present. March 29, 2001 - ABS became U.S. Navy qualified for support of the H-3 fleet.

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Dedicated to Repairing Sikorsky Rotor Blades

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  1. Dedicated to Repairing Sikorsky Rotor Blades

  2. History ABS started in June 1994 doing S-55 & S-58 blades.

  3. History 1998 - Pemco needed a shop to complete H-3 blade repairs for an Egyptian contact.

  4. Present March 29, 2001 - ABS became U.S. Navy qualified for support of the H-3 fleet.

  5. ABS is currently repairing S-61/H-3 CH-54/S-64 Skycrane UH-60 Blackhawk Westland SeaKing S-55/S-62/S-58

  6. FAA Authorizations

  7. Authorizations

  8. Main Rotor Blades

  9. Main Blade Repair Spar corrosion is dressed out & area cleaned up.

  10. Main Blade Repair Blade is X-Rayed for further hidden damage and defects.

  11. Main Blade Repair The cuff is removed and area is cleaned before X-Ray.

  12. Main Blade Repair Pockets are installed using an alignment fixture. A computerized controller system runs the heater bars.

  13. Main Blade Repair Replacement nickel leading edges are installed.

  14. Main Blade Repair Cuff installation.

  15. Main Blade Repair Bolt holes are machine reamed to .0002 ” pinch fit.

  16. Main Blade Repair S6115-20201-1 or -2 converted to -3 Counterweights being changed.

  17. Main Blade Repair Blade is painted to operator’s colors and specifications. Stenciling is completed.

  18. Main Blade Repair Helium leak detection unit used for final QA of BIM System.

  19. Main Blade Repair Static Balance using Electronic Balancer

  20. Tail Rotor Blade

  21. Tail Blade Repair New pocket being installed in ABS designed and built fixture.

  22. Tail Blade Repair New nickel abrasion strip installed on spar.

  23. Tail Blade Repair Damaged spar attachment bolt holes. Stainless steel bushings installed.

  24. Tail Blade Repair Paint applied according to specifications.

  25. Tail Blade Repair Blades are balanced using Electronic Balancer.

  26. Westland Honeycomb Tail Blade Refurbishment. Typical leading edge damage

  27. Westland Honeycomb Tail Blade Refurbishment. Total dis-assembly and inspection of spar prior to buildup

  28. Westland Tail Blade after Bonding

  29. Westland Tail Blade Completely Assembled

  30. Westland Composite Main WD01-29-90250

  31. Westland Composite Main WD01-29-90250 Paint Removal

  32. Westland Composite Main WD01-29-90250 Repainted and Balanced

  33. Westland Composite Main WD01-29-90250 Balance Difference Incoming After Re-Paint Weight 212.3 lbs. 210.2 lbs. Span Moment 37,077 “lbs. 36,600 “lbs. Chord Moment 976.9 “lbs. 963.4 “lbs. Blade had been repainted 4 times. Found 3 sets of stencils This why you do not have interchangability between blades

  34. Balance Dynamic vs Static Is it Necessary? Dynamic is essentially the same as ground runs. Cannot simulate forward airspeed. Really all it does is give you a track number to start from.

  35. Westland Composite Main WD01-29-90250 Typical erosion damage to leading edge.

  36. Westland Composite Main WD01-29-90250 8’ Nickel abrasion strip installed.

  37. PROBLEMS

  38. Cracks radiating from bolt holes. BIM indicator caught this problem.

  39. Corrosion on spar under cuff.

  40. Problems Corrosion on spar under abrasion strip

  41. Problems Westland built pockets.

  42. Problems Westland built pockets.

  43. Problems Corrosion damage caused by prolonged storage in a humid environment.

  44. Problems Do not stop drill pocket skin cracks. Drill bit went thru skin into spar. BLADE SCRAP.

  45. Problems Internal borescope inspection along with an X-Ray is conducted looking for Corrosion.

  46. Problems Water damage to honeycomb tail blade.

  47. Problems Abrasive blast damage to pocket skin during paint removal.

  48. Maintenance Tips

  49. Repainting the blade causes the blade to be out of balance. Touch up paint only.

  50. BIM System Maintenance Replacement O-rings MS 28775-6 BIM Indicator and Shrader Valve

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