82-06-08 SIKORSKY AIRCRAFT DIVISION: Amendment 39-4348. Applies to Model S-76A helicopters, prior to S/N 760207, certificated in all categories.
Compliance is required within the next 50 hours' time in service after the effective date of the AD unless already accomplished.
To prevent possible loss of both DC generators due to loss of ground, modify DC junction box ground circuits in accordance with Sikorsky Alert Service Bulletin 76-24-7, dated February 3, 1982, or an equivalent means of compliance approved by the Chief, Boston Aircraft Certification Branch, Aircraft Certification Division, New England Region, Federal Aviation Administration.
This amendment becomes effective March 22, 1982.