AD/ENST 28/13 - Main Rotor Hub Retention Lock Washer - Replacement
1AD/ENST 28/13 - Main Rotor Hub Retention Lock Washer - Replacement
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COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
Image unavailable in extracted text Enstrom F-28 Series Helicopters
AD/ENST 28/13 Main Rotor Hub Retention Lock
Washer - Replacement
4/76
Applicability: All models F-28A with S/Nos. 4 to 275, 277, 278, 280 to 283, and models 280 with
S/Nos. 1001 to 1006.
Document: 1. Enstrom Service Note No. 0025A; or 2. FAA AD 75-22-10.
Compliance: Within 25 hours time in service after 30 April 1976.