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Airworthiness Directives; Sikorsky Aircraft Corporation Model S-76A, S-76B, and S-76C Helicopters
Rules and Regulations
D09002ee1bdf8a170
D09002ee1bdf8a1e4
United States
Department of Transportation
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org
United States Government Agency or Subagency
United States
Federal Aviation Administration
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org
United States Government Agency or Subagency
This amendment supersedes an existing airworthiness directive (AD) that applies to Sikorsky Aircraft Corporation (Sikorsky) Model S- 76A, S-76B, and S-76C helicopters and currently requires, before further flight, performing a fluorescent penetrant inspection (FPI) of the main rotor shaft assembly (shaft). Also, a recurring FPI and visual inspection for a cracked shaft are required by that AD. That AD also requires replacing the shaft with an airworthy shaft before further flight if a crack is found. This amendment requires replacing certain serial numbered shafts with an airworthy shaft before further flight. This amendment is prompted by further investigation and a determination that the inspections can be safely eliminated if certain serial- numbered shafts are removed from service before further flight. The actions specified by this AD are intended to prevent failure of the shaft and subsequent loss of control of the helicopter.
66 FR 27449
https://www.govinfo.gov/app/details/FR-2001-05-17/01-12336
01-12336
fr17my01-3
RIN 2120-AA64
4910-13-P
Docket No. 2001-SW-05-AD
Amendment 39-12232
AD 2001-10-06
https://www.govinfo.gov/app/details/FR-2001-05-17/01-12336
https://www.govinfo.gov/content/pkg/FR-2001-05-17/html/01-12336.htm
https://www.govinfo.gov/content/pkg/FR-2001-05-17/pdf/01-12336.pdf
Air Transportation
Aircraft
Aviation Safety
Safety
2 p.
27449
27450
66 FR 27449
Code of Federal Regulations
Title 14 Part 39
14 CFR Part 39
Regulation Identification Number 2120-AA64
RIN 2120-AA64
Airworthiness Directives; Sikorsky Aircraft Corporation Model S-76A, S-76B, and S-76C Helicopters; Federal Register Vol. 66, Issue
RULE
01-12336
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
Docket No. 2001-SW-05-AD
Amendment 39-12232
AD 2001-10-06
4910-13-P
01-12336
Final rule.
This amendment supersedes an existing airworthiness directive (AD) that applies to Sikorsky Aircraft Corporation (Sikorsky) Model S- 76A, S-76B, and S-76C helicopters and currently requires, before further flight, performing a fluorescent penetrant inspection (FPI) of the main rotor shaft assembly (shaft). Also, a recurring FPI and visual inspection for a cracked shaft are required by that AD. That AD also requires replacing the shaft with an airworthy shaft before further flight if a crack is found. This amendment requires replacing certain serial numbered shafts with an airworthy shaft before further flight. This amendment is prompted by further investigation and a determination that the inspections can be safely eliminated if certain serial- numbered shafts are removed from service before further flight. The actions specified by this AD are intended to prevent failure of the shaft and subsequent loss of control of the helicopter.
June 21, 2001.
Wayne Gaulzetti, Aviation Safety Engineer, Boston Aircraft Certification Office, 12 New England Executive Park, Burlington, MA 01803, telephone (781) 238-7156, fax (781) 238-7199.
Air Transportation
Aircraft
Aviation Safety
Safety
Airworthiness directives:
Sikorsky,
Federal Register
Vol. 66, no. 96
Office of the Federal Register, National Archives and Records Administration
2001-05-17
continuing
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156 p.
Table of Contents:
AE 2.7:
GS 4.107:
AE 2.106:
KF70.A2
https://www.govinfo.gov/app/details/FR-2001-05-17
P0b002ee180a13527
0097-6326
0042-1219
0364-1406
769-004-00000-9
000582072
f:fr17my01
https://www.govinfo.gov/app/details/FR-2001-05-17
https://www.govinfo.gov/content/pkg/FR-2001-05-17/pdf/FR-2001-05-17.pdf
https://www.govinfo.gov/content/pkg/FR-2001-05-17/xml/FR-2001-05-17.xml
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27589
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2010-09-24
2023-05-05
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FR-2001-05-17
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