AD 95-19-15 R1

AD Final Rules - 95-19-15 R1.pdf
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AD Number:
95-19-15 R1
Document Type:
AD Final Rules
Docket Number:
FAA-2005-20968
Subject Heading:
Airworthiness Directives; Tiger Aircraft LLC Models AA-5, AA-5A, AA-5B, and AG-5B Airplanes
Subject:
Wing attach shoulder bolts
Status:
Current
Citation:
Federal Register: August 22, 2005 (Volume 70, Number 161)
Citation Publish Date:
08/22/2005
Effective Date:
10/03/2005
Make:
True Flight Holdings LLC
Model:
AA-5 | AA-5A | AA-5B | AG-5B
Product Type:
Aircraft
Product Subtype:
Small Airplane
Affected AD:
Superseded AD:
95-19-15
Affected By:
Superseded By:
Service/Office:
Office of Primary Responsibility:
CFR Part Reference:
Part 39
Comments:
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[Federal Register: August 22, 2005 (Volume 70, Number 161)]


[Rules and Regulations]


[Page 48857-48859]


From the Federal Register Online via GPO Access [wais.access.gpo.gov]


[DOCID:fr22au05-10]


–––––––––––––––––––––––––––––––––––


DEPARTMENT OF TRANSPORTATION


Federal Aviation Administration


14 CFR Part 39


[Docket No. FAA-2005-20968; Directorate Identifier 94-CE-15-AD; Amendment 39-14222; AD


95-19-15 R1]


RIN 2120-AA64


Airworthiness Directives; Tiger Aircraft LLC Models AA-5, AA-5A, AA-5B, and AG-5B


Airplanes


AGENCY:
 
Federal Aviation Administration (FAA), DOT.


ACTION:
 
Final rule.


–––––––––––––––––––––––––––––––––––


SUMMARY:
 
The FAA is revising Airworthiness Directive (AD) 95-19-15 for all Tiger Aircraft


LLC (Type Certificate A16EA formerly held by American General Aircraft Corporation and


Grumman American Aviation Corporation) Models AA-5, AA-5A, AA-5B, and AG-5B airplanes.


AD 95-19-15 currently requires you to inspect the wing attach shoulder bolts for fretting, scoring,


wear, or enlarged or elongated mounting holes (known as damage from hereon); replace any


damaged parts; repair any damaged areas; inspect the wing spar at the center spar clearance gap for


excessive clearance; and shim the spar if excessive clearance is found. That AD was written to apply


to all serial numbers of all models. A design change was made in this area beginning with serial


number 10175 of the Model AG-5B airplanes. Therefore, the action should not apply to Model AG-


5B airplanes with a serial number of 10175 or higher. This AD retains all the actions of AD 95-19-15


for all airplanes originally affected, but cuts off the applicability for the Model AG-5B airplanes at


serial number 10174. We are issuing this AD to continue to prevent wing attach shoulder bolt failure,


which, if not detected and corrected, could lead to structural damage of the wing/fuselage to the point


of failure.


DATES:
 
This AD becomes effective on October 3, 2005.


As of October 3, 2005, the Director of the Federal Register approved the incorporation by


reference of certain publications listed in the regulation.


ADDRESSES:
 
To get the service information identified in this AD, contact Tiger Aircraft LLC, 226


Pilot Way, Martinsburg, WV 25401.


To view the AD docket, go to the Docket Management Facility; U.S. Department of


Transportation, 400 Seventh Street, SW., Nassif Building, Room PL-401, Washington, DC 20590-


001 or on the Internet at
 
http://dms.dot.gov
. The docket number is FAA-2005-20968; Directorate


Identifier 94-CE-15-AD.
2


FOR FURTHER INFORMATION CONTACT:
 
Richard Beckwith, Aerospace Engineer, New


York Aircraft Certification Office (ACO), 1600 Stewart Avenue, Suite 410, Westbury, NY 11590;


telephone: 516-794-5531; facsimile: 516-794-5531.


SUPPLEMENTARY INFORMATION:


Discussion


What events have caused this AD?
 
The FAA has received four reports (three in England and one


in the United States) of wing attach shoulder bolt failure on Tiger Aircraft LLC (Type Certificate


A16EA formerly held by American General Aircraft Corporation (AGAC) and Grumman American


Aviation Corporation (GAAC)) Models AA-5, AA-5A, AA-5B, and AG-5B airplanes. Investigation


reveals that excessive wing to center spar clearance could have contributed to the bolt failures;


however, in each of the four instances, the bolts failed before reaching the service life of 7,250 hours


time-in-service (TIS). The FAA has determined that, to assure the safety of these airplanes, the


established service life of these bolts needed review. Our review of service life on Tiger Aircraft LLC


(Type Certificate A16EA formerly held by AGAC and GAAC) Models AA-5, AA-5A, AA-5B, and


AG-5B airplanes caused us to issue AD 95-19-15, Amendment 39-9377 (60 FR 48628, September


20, 1995). AD 95-19-15 currently requires the following on Tiger Aircraft LLC (Type Certificate


A16EA formerly held by AGAC and GAAC) Models AA-5, AA-5A, AA-5B, and AG-5B airplanes,


all serial numbers:


–Inspect the wing attach shoulder bolts for fretting, scoring, wear, or enlarged or elongated mounting


holes (known as damage from hereon), and replace any damaged parts and repairing any damaged


areas;


–Inspect the wing spar at the center spar clearance gap for excessive clearance; and


–Shim the spar if excessive clearance is found.


AD 95-19-15 was written to apply to all serial numbers of all models. A design change was made


in this area beginning with serial number 10175 of the Model AG-5B airplanes. Therefore, FAA


determined that the action should not apply to Model AG-5B airplanes with a serial number of 10175


or higher.


Has FAA taken any action to this point?
 
We issued a proposal to amend part 39 of the Federal


Aviation Regulations (14 CFR part 39) to include an AD that would apply to all Tiger Aircraft LLC


(Type Certificate A16EA formerly held by American General Aircraft Corporation and Grumman


American Aviation Corporation) Models AA-5, AA-5A, AA-5B, and AG-5B airplanes. This proposal


was published in the Federal Register as a notice of proposed rulemaking (NPRM) on May 19, 2005


(70 FR 28854). The NPRM proposed to retain all the actions of AD 95-19-15 for all airplanes


originally affected, but proposed to cut off the applicability for the Model AG-5B airplanes at serial


number 10174.


Comments


Was the public invited to comment?
 
We provided the public the opportunity to participate in


developing this AD. The following presents the comments received on the proposal and FAA's


response to each comment:


Comment Issue No. 1: Type Certificate Data Sheet (TCDS) Number (No.) Is Referenced


Incorrectly in the NPRM


What is the commenter's concern?
 
A letter from Tiger Aircraft LLC notes that the TCDS No.


A16EH in the NPRM is referenced incorrectly. The TCDS should be No. A16EA.