Summary
This amendment adopts a new airworthiness directive (AD) for Sikorsky Aircraft Corporation (Sikorsky) Model S-76A, B, and C helicopters. This action requires a one-time ultrasonic inspection of the main rotor shaft assembly (M/R shaft) for cracking. This amendment is prompted by the discovery of cracking that occurred during the manufacturing of certain M/R shafts. The actions specified in this AD are intended to detect cracking in the M/R shaft, which could result in separation of the main rotor and subsequent loss of control of the helicopter.
Directive Details
AD Number
FAA-2007-28241
Document Number
E7-10126
Type
Rule
Publication Date
May 31, 2007
Effective Date
June 15, 2007
Affected Manufacturer
Sikorsky Aircraft Corporation Model S-76A, B, and C
Criticality
important
Emergency
No
Docket ID
Docket No. FAA-2007-28241
Topics
Official Documents
Automated AD compliance tracking
AeroCopilot matches ADs to your aircraft and tracks compliance status. Included in every plan from $9.99 monthly.
Unlock AD-to-aircraft matching, compliance tracking, recurrence schedule with a free AeroCopilot account.
Sign up free to unlock AD-to-aircraft matching, compliance tracking, recurrence scheduleFree forever · No credit card · Sourced directly from FAA & NOAA pipelines