Airworthiness Directives; Bell Helicopter Textron, Inc. Model 204B, 205A, 205A-1, 205B, 212, 214B, and 214B-1 Helicopters

[Federal Register Volume 67, Number 217 (Friday, November 8, 2002)]
[Rules and Regulations]
[Pages 68026-68027]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 02-28411]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. 2001-SW-42-AD; Amendment 39-12941; AD 2002-22-14]
RIN 2120-AA64


Airworthiness Directives; Bell Helicopter Textron, Inc. Model 
204B, 205A, 205A-1, 205B, 212, 214B, and 214B-1 Helicopters

AGENCY: Federal Aviation Administration, DOT.

ACTION: Final rule.

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SUMMARY: This amendment supersedes an existing airworthiness directive 
(AD) for specified Bell Helicopter Textron, Inc. (BHTI) model 
helicopters that requires reducing the retirement time for certain main 
rotor tension-torsion (TT) straps on those models and on the Model UH-1 
series helicopters. This document contains the same requirements as the 
existing AD but removes the Model UH-1 series restricted category 
helicopters and adds the BHTI Model 205A and 205B helicopters to the 
applicability. This amendment is prompted by the issuance of a separate 
AD for the Model UH-1 series helicopters and the need to add the BHTI 
Model 205A and 205B helicopters to the applicability because the 
affected straps are eligible for installation on these model 
helicopters. The actions specified by this AD are intended to prevent 
failure of a TT strap, loss of a main rotor blade, and subsequent loss 
of control of the helicopter.

DATES: Effective December 13, 2002.

FOR FURTHER INFORMATION CONTACT: Michael Kohner, Aviation Safety 
Engineer, FAA, Rotorcraft Directorate, Rotorcraft Certification Office, 
Fort Worth, Texas 76193-0170, telephone (817) 222-5447, fax (817) 222-
5783.

SUPPLEMENTARY INFORMATION: A proposal to amend 14 CFR part 39 to 
include an AD for specified model helicopters was published in the 
Federal Register on May 21, 2002 (67 FR 35763). On July 31, 1980, the 
FAA issued AD 80-17-09, Amendment 39-3876 (45 FR 54014, August 14, 
1980), Docket No. 80-ASW-25. That AD requires replacing certain TT 
straps on or before attaining 1200 hours time in service (TIS) or 24 
months, whichever occurs first, for the BHTI Model 204B, 205A-1, 212, 
214B, 214B-1, and the Model UH-1 series military helicopters. That 
action was prompted by an offshore accident of a BHTI Model 212 
helicopter in which a TT strap reportedly failed in flight after 2,140 
hours TIS with resulting loss of the main rotor blade. The requirements 
of that AD are intended to prevent failure of a TT strap, loss of a 
main rotor blade, and subsequent loss of control of the helicopter.
    Since the issuance of that AD, a separate AD was issued (67 FR 
61771, October 2, 2002) for the military surplus restricted category 
helicopters that includes the Model UH-1 series helicopters, hence the 
removal of the Model UH-1 series helicopters from the applicability of 
this AD. Also, further review indicates that the affected TT straps are 
eligible for installation on the BHTI Model 205A and 205B helicopters. 
Therefore, this AD includes those models in the applicability.
    To further address this unsafe condition that is likely to exist or 
develop on other helicopters of these same type designs, this AD 
supersedes AD 80-17-09. This AD contains the requirements of AD 80-17-
09 but changes the applicability by removing the restricted category 
Model UH-1 series helicopters and adding the BHTI Model 205A and 205B 
helicopters.
    Interested persons have been afforded an opportunity to participate 
in the making of this amendment. No comments were received on the 
proposal or the FAA's determination of the cost to the public. The FAA 
has determined that air safety and the public interest require the 
adoption of the rule as proposed except for minor editorial changes. 
These changes will neither increase the economic burden on operators 
nor increase the scope of the AD.
    The FAA estimates that this AD will affect 168 helicopters of U.S. 
registry. The FAA also estimates that it will take 8 work hours to 
replace the TT straps at an average labor rate of $60 per work hour. 
The TT straps will cost approximately $10,484 per helicopter. Based on 
these figures, the total cost

[[Page 68027]]

impact of the AD on U.S. operators is estimated to be $1,840,352.
    The regulations adopted herein will not have a substantial direct 
effect on the States, on the relationship between the national 
Government and the States, or on the distribution of power and 
responsibilities among the various levels of government. Therefore, it 
is determined that this final rule does not have federalism 
implications under Executive Order 13132.
    For the reasons discussed above, I certify that this action (1) is 
not a ``significant regulatory action'' under Executive Order 12866; 
(2) is not a ``significant rule'' under DOT Regulatory Policies and 
Procedures (44 FR 11034, February 26, 1979); and (3) will not have a 
significant economic impact, positive or negative, on a substantial 
number of small entities under the criteria of the Regulatory 
Flexibility Act. A final evaluation has been prepared for this action 
and it is contained in the Rules Docket. A copy of it may be obtained 
from the FAA, Office of the Regional Counsel, Southwest Region, 2601 
Meacham Blvd., Room 663, Fort Worth, Texas.

List of Subjects in 14 CFR Part 39

    Air transportation, Aircraft, Aviation safety, Safety.

Adoption of the Amendment

    Accordingly, pursuant to the authority delegated to me by the 
Administrator, the Federal Aviation Administration amends part 39 of 
the Federal Aviation Regulations (14 CFR part 39) as follows:

PART 39--AIRWORTHINESS DIRECTIVES

    1. The authority citation for part 39 continues to read as follows:

    Authority: 49 U.S.C. 106(g), 40113, 44701.


Sec.  39.13  [Amended]

    2. Section 39.13 is amended by removing Amendment 39-3876 (45 FR 
54014, August 14, 1980) and by adding a new airworthiness directive 
(AD), Amendment 39-12941, to read as follows:

2002-22-14 Bell Helicopter Textron, Inc.: Amendment 39-12941. Docket 
No. 2001-SW-42-AD. Supersedes AD 80-17-09, Amendment 39-3876, Docket 
No. 80-ASW-25.

    Applicability: Model 204B, 205A, 205A-1, 205B, 212, 214B, and 
214B-1 helicopters, with main rotor tension-torsion (TT) strap, part 
number (P/N) 204-012-122-1, -5, or 214-010-179-1, installed, 
certificated in any category.

    Note 1: This AD applies to each helicopter identified in the 
preceding applicability provision, regardless of whether it has been 
otherwise modified, altered, or repaired in the area subject to the 
requirements of this AD. For helicopters that have been modified, 
altered, or repaired so that the performance of the requirements of 
this AD is affected, the owner/operator must request approval for an 
alternative method of compliance in accordance with paragraph (d) of 
this AD. The request should include an assessment of the effect of 
the modification, alteration, or repair on the unsafe condition 
addressed by this AD; and if the unsafe condition has not been 
eliminated, the request should include specific proposed actions to 
address it.

    Compliance: Required as indicated, unless accomplished 
previously.
    To prevent separation of a TT strap, loss of a main rotor blade, 
and subsequent loss of control of the helicopter, accomplish the 
following:
    (a) Before further flight, remove and replace any TT strap with 
1,200 or more hours time-in-service (TIS) or 24 or more months since 
initial installation on any helicopter, whichever occurs first.
    (b) This AD revises the Limitations section of the maintenance 
manual by establishing a life limit for the TT straps, P/N 204-012-
122-1, -5, or 214-010-179-1, of 1200 hours TIS or 24 months since 
initial installation on any helicopter, whichever occurs first.
    (c) Special flight permits will not be issued.
    (d) An alternative method of compliance or adjustment of the 
compliance time that provides an acceptable level of safety may be 
used if approved by the Manager, Rotorcraft Certification Office, 
Rotorcraft Directorate, FAA. Operators shall submit their requests 
through an FAA Principal Maintenance Inspector, who may concur or 
comment and then send it to the Manager, Rotorcraft Certification 
Office.

    Note 2: Information concerning the existence of approved 
alternative methods of compliance with this AD, if any, may be 
obtained from the Rotorcraft Certification Office.

    (e) This amendment becomes effective on December 13, 2002.

    Issued in Fort Worth, Texas, on October 28, 2002.
David A. Downey,
Manager, Rotorcraft Directorate, Aircraft Certification Service.
[FR Doc. 02-28411 Filed 11-7-02; 8:45 am]
BILLING CODE 4910-13-P

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