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BELL TEXTRON INC. (TYPE CERTIFICATE PREVIOUSLY HELD BY
BELL HELICOPTER TEXTRON INC.) HELICOPTERS:
Amendment 39-21441; Docket No. FAA-2020-0270; Product Identifier 2019-SW-018-AD.
(a) EFFECTIVE DATE This airworthiness directive (AD) is effective April 13, 2021. (b) AFFECTED ADS None. (c) APPLICABILITY This AD applies to Bell Textron Inc. (Bell) Model 205B helicopters, certificated in any category with a tail rotor (T/R) blade part number (P/N) 212-010-750-009, 212-010-750-105, 212-010-750-109, 212-010-750- 111, 212-010-750-113, 212-010-750-117, 212-010-750-133, 212-010-750- 135, 212-010-750-117FM, or 212-010-750-135FM installed. (d) SUBJECT Joint Aircraft System Component (JASC) Code: 6410, Tail Rotor Blades. (e) UNSAFE CONDITION This AD was prompted by flight testing and fatigue analysis that indi- cates that these part-numbered T/R blades sustain greater loads when used on Bell Model 205B helicopters compared to their use on other model helicopters. The FAA is issuing this AD to prevent a T/R blade from remaining in service beyond its fatigue life, resulting in failure of the T/R blade and subsequent loss control of the helicop- ter. (f) COMPLIANCE Comply with this AD within the compliance times specified, unless al- ready done. (g) REQUIRED ACTIONS (1) Before further flight: (i) Determine the total hours time-in-service (TIS) of each T/R blade and remove from service each T/R blade that has accumulated 2,500 or more hours TIS. For each T/R blade that has accumulated less than 2,500 hours TIS, do the following: (ii) Re-identify the P/N on the T/R blade data plate by vibro-etching to change the last three digits of the existing P/N as follows: (A) For T/R blade P/N 212-010-750-009, re-identify the P/N as 212-010-750- 111. (B) For T/R blade P/N 212-010-750-105, re-identify the P/N as 212-010-750- 109. (C) For T/R blade P/N 212-010-750-113, re-identify the P/N as 212-010-750- 117FM. (D) For T/R blade P/N 212-010-750-133, re-identify the P/N as 212-010-750- 135FM. (iii) Create a component history card or equivalent record to reflect the change in P/N for each T/R blade and establish a life limit of 2,500 hours TIS. (iv) Revise the Airworthiness Limitations Section of the existing mainte- nance manual or the Instructions for Continued Airworthiness for your helicopter to establish a life limit of 2,500 hours TIS for each T/R blade P/N 212-010-750-109, P/N 212-010-750-111, P/N 212-010-750-117, P/N 212-010-750-135, P/N 212-010-750-117FM and P/N 212-010-750-135FM. (2) Thereafter, except as provided in paragraph (i), no alternative life limits may be approved for T/R blade P/N 212-010-750-009, P/N 212-010- 750-105, P/N 212-010-750-113, or P/N 212-010-750-133. (3) After the effective date of this AD, do not install a T/R blade P/N 212-010-750-009, P/N 212-010-750-105, P/N 212-010-750-113, or P/N 212- 010-750-133 on any Model 205B helicopter unless the part number has been changed and the life limit reduced in accordance with this AD. (4) After the effective date of this AD do not install a T/R blade P/N 212 -010-750-109, P/N 212-010-750-111, P/N 212-010-750-117, P/N 212-010- 750-135, P/N 212-010-750-117FM, or P/N 212-010-750-135FM, on any Model 205B helicopter unless the life limit has been reduced in accordance with this AD. (h) SPECIAL FLIGHT PERMIT Special flight permits are prohibited. (i) ALTERNATIVE METHODS OF COMPLIANCE (AMOCS) (1) The Manager, DSCO Branch, FAA, has the authority to approve AMOCs for this AD, if requested using the procedures found in 14 CFR 39.19. In accordance with 14 CFR 39.19, send your request to your principal inspector or local Flight Standards District Office, as appropriate. If sending information directly to the manager of the certification office, send it to the attention of the person identified in paragraph (j)(1) of this AD. Information may be emailed to: 9-ASW-190-COS@faa. gov. (2) Before using any approved AMOC, notify your appropriate principal in- spector, or lacking a principal inspector, the manager of the local flight standards district office/certificate holding district office. (j) RELATED INFORMATION (1) For more information about this AD, contact Kuethe Harmon, Safety Man- agement Program Manager, DSCO Branch, FAA, 10101 Hillwood Pkwy., Fort Worth, TX 76177; telephone 817-222-5198; email Kuethe.email@example.com. (2) For service information identified in this AD, contact Bell Textron Inc., P.O. Box 482, Fort Worth, TX 76101; telephone 817-280-3391; fax 817-280-6466; or at https://www.bellcustomer.com. You may view service information at the FAA, Office of the Regional Counsel, Southwest Region, 10101 Hillwood Pkwy., Room 6N-321, Fort Worth, TX 76177. Issued on February 25, 2021. Gaetano A. Sciortino, Deputy Director for Strategic Initiatives, Compliance & Airworthiness Division, Aircraft Cer- tification Service. FOR FURTHER INFORMATION CONTACT: Kuethe Harmon, Safety Management Program Manager, DSCO Branch, FAA, 10101 Hillwood Pkwy., Fort Worth, TX 76177; telephone 817-222-5198; email firstname.lastname@example.org.
DEPARTMENT OF TRANSPORTATION