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2013-02-08
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Airworthiness Directives; MD Helicopters, Inc., Helicopters
Rules and Regulations
D09002ee1bdcaa0df
D09002ee1bdcaa154
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
We are adopting a new airworthiness directive (AD) for MD Helicopters, Inc. (MDHI) Model 500N, 600N and MD900 helicopters to require determining the cure date for each NOTAR fan blade tension- torsion strap (T-T strap), establishing a calendar-time retirement life for certain T-T straps, reducing the retirement life of certain T-T straps, marking each T-T strap with the expiration date, creating a component record card for each T-T strap, and revising the airworthiness limitations section of the maintenance manual to reflect the changes to the retirement life. This AD was prompted by a report from the T-T strap manufacturer that, over a period of time, moisture may reduce the strength of a T-T strap. The actions are intended to prevent failure of a T-T strap, loss of directional control and subsequent loss of control of the helicopter.
78 FR 9309
https://www.govinfo.gov/app/details/FR-2013-02-08/2013-02582
2013-02582
fr08fe13-2
RIN 2120-AA64
4910-13-P
Docket No. FAA-2012-0746
Directorate Identifier 2008-SW-035-AD
Amendment 39-17337
AD 2013-03-03
https://www.govinfo.gov/app/details/FR-2013-02-08/2013-02582
https://www.govinfo.gov/content/pkg/FR-2013-02-08/html/2013-02582.htm
https://www.govinfo.gov/content/pkg/FR-2013-02-08/pdf/2013-02582.pdf
Air Transportation
Aircraft
Aviation Safety
Incorporation by Reference
Safety
3 p.
9309
9311
78 FR 9309
Code of Federal Regulations
Title 14 Part 39
14 CFR Part 39
Regulation Identification Number 2120-AA64
RIN 2120-AA64
Airworthiness Directives; MD Helicopters, Inc., Helicopters; Federal Register Vol. 78, Issue
RULE
2013-02582
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
2013-03-15
Docket No. FAA-2012-0746
Directorate Identifier 2008-SW-035-AD
Amendment 39-17337
AD 2013-03-03
4910-13-P
2013-02582
Final rule.
We are adopting a new airworthiness directive (AD) for MD Helicopters, Inc. (MDHI) Model 500N, 600N and MD900 helicopters to require determining the cure date for each NOTAR fan blade tension- torsion strap (T-T strap), establishing a calendar-time retirement life for certain T-T straps, reducing the retirement life of certain T-T straps, marking each T-T strap with the expiration date, creating a component record card for each T-T strap, and revising the airworthiness limitations section of the maintenance manual to reflect the changes to the retirement life. This AD was prompted by a report from the T-T strap manufacturer that, over a period of time, moisture may reduce the strength of a T-T strap. The actions are intended to prevent failure of a T-T strap, loss of directional control and subsequent loss of control of the helicopter.
This AD is effective March 15, 2013.
John Cecil, Aviation Safety Engineer, Los Angeles Aircraft Certification Office, Transport Airplane Directorate, FAA, 3960 Paramount Blvd., Lakewood, California 90712; telephone (562) 627-5228; email john.cecil@faa.gov.
Air Transportation
Aircraft
Aviation Safety
Incorporation by Reference
Safety
Airworthiness Directives:
MD Helicopters, Inc., Helicopters
,
john.cecil@faa.gov
http://www.mdhelicopters.com
http://www.regulations.gov
Federal Register
Vol. 78, no. 27
Office of the Federal Register, National Archives and Records Administration
2013-02-08
continuing
daily
deposited
born digital
275 p.
Table of Contents:
AE 2.7:
GS 4.107:
AE 2.106:
KF70.A2
https://www.govinfo.gov/app/details/FR-2013-02-08
P0b002ee183ca5dda
0097-6326
0042-1219
0364-1406
769-004-00000-9
000582072
f:fr08fe13
https://www.govinfo.gov/app/details/FR-2013-02-08
https://www.govinfo.gov/content/pkg/FR-2013-02-08/pdf/FR-2013-02-08.pdf
https://www.govinfo.gov/content/pkg/FR-2013-02-08/xml/FR-2013-02-08.xml
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9307
9573
DGPO
2013-02-08
2023-04-30
FR-2013-02-08
machine generated
eng
FR
FR-2013-02-08
78
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