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Federal Register / Vol. 86, No. 43 / Monday, March 8, 2021 / Rules and Regulations DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration 14 CFR Part 39
Docket No. FAA20200811; Product Identifier 2019CE055AD; Amendment 3921431; AD 20210410
RIN 2120AA64

Airworthiness Directives; Textron Aviation, Inc. Airplanes Federal Aviation Administration FAA, DOT.
ACTION: Final rule.
AGENCY:

The FAA is adopting a new airworthiness directive AD for certain Textron Aviation Inc. Textron type certificate previously held by Cessna Aircraft Company Models 208 and 208B airplanes. This AD was prompted by reports of loose elevator torque tube attach fasteners. This AD requires repetitively inspecting the inboard and outboard elevator torque tube attachments for loose or incorrectly installed fasteners, replacing all fasteners if loose or incorrectly installed fasteners are found, and reporting the inspection results to the FAA. This AD
also includes optional actions to terminate the repetitive inspections. The FAA is issuing this AD to address the unsafe condition on these products.
DATES: This AD is effective April 12, 2021.
The Director of the Federal Register approved the incorporation by reference of a certain publication listed in this AD
as of April 12, 2021.
ADDRESSES: For service information identified in this final rule, contact Textron Aviation Inc., One Cessna Boulevard, Wichita, KS 67215; phone:
3165175800; email:
teamturbopropsupport@txtav.com;
website: https support.cessna.com.
You may view this service information at the FAA, Airworthiness Products Section, Operational Safety Branch, 901
Locust St., Kansas City, MO 64106. For information on the availability of this material at the FAA, call 8163294148.
It is also available at https
www.regulations.gov by searching for and locating Docket No. FAA2020
0811.
SUMMARY:

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Examining the AD Docket You may examine the AD docket at https www.regulations.gov by searching for and locating Docket No.
FAA20200811; or in person at Docket Operations between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. The AD docket contains this
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final rule, any comments received, and other information. The address for Docket Operations is U.S. Department of Transportation, Docket Operations, M30, West Building Ground Floor, Room W12140, 1200 New Jersey Avenue SE, Washington, DC 20590.
FOR FURTHER INFORMATION CONTACT:
Bobbie Kroetch, Aviation Safety Engineer, Wichita ACO Branch, FAA, 1801 Airport Road, Wichita, KS 67209;
phone: 3169464155; fax: 316946
4107; email: bobbie.kroetch@faa.gov or Wichita-COS@faa.gov.
SUPPLEMENTARY INFORMATION:
Background The FAA issued a notice of proposed rulemaking NPRM to amend 14 CFR
part 39 by adding an AD that would apply to certain Textron type certificate previously held by Cessna Aircraft Company Models 208 and 208B
airplanes. The NPRM published in the Federal Register on September 22, 2020
85 FR 59457. The NPRM was prompted by reports of loose elevator torque tube attach fasteners on low flight time Textron Model 208B
airplanes. Textron identified a quality escape affecting certain serial-numbered Model 208 and 208B airplanes. Fastener holes in the inboard and outboard elevator torque tube connections may have been oversized and fasteners at the inboard and outboard torque tube connections may have been installed incorrectly.
In the NPRM, the FAA proposed to require repetitively inspecting the inboard and outboard elevator torque tube attachments for loose or incorrectly installed fasteners, replacing all fasteners if loose or incorrectly installed fasteners are found, and reporting the inspection results to the FAA. The NPRM also proposed optional actions to terminate the repetitive inspections.
This condition, if not addressed, could result in failure of the elevator torque tube fasteners, leading to loss of elevator control and loss of controlled flight. The FAA is issuing this AD to address the unsafe condition on these products.
Discussion of Final Airworthiness Directive Comments The FAA received no comments on the NPRM or on the determination of the costs.
Conclusion The FAA reviewed the relevant data and determined that air safety requires adopting this AD as proposed.
Accordingly, the FAA is issuing this AD
to address the unsafe condition on these
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products. This AD is adopted as proposed in the NPRM.
Related Service Information Under 1
CFR Part 51
The FAA reviewed Task 273000
290, Left and Right Elevator Torque Tube Attach Points Borescope Special Detailed Inspection, dated October 1, 2018, of the Cessna Model 208
Maintenance Manual Task 273000
290. This service information contains procedures for performing a detailed borescope inspection of the left and right elevator torque tube attach points.
This service information is reasonably available because the interested parties have access to it through their normal course of business or by the means identified in ADDRESSES.
Other Related Service Information The FAA also reviewed Textron Aviation Mandatory Caravan Service Bulletin CAB2706, dated October 14, 2019 CAB2706. This service information contains instructions for visually inspecting the left and right elevator torque tube attach points for the presence of loose rivets and replacing loose or incorrectly installed rivets.
Differences Between This AD and the Service Information Task 273000290 only specifies replacing loose fasteners. This AD
requires replacement of all 48 fasteners if any single inboard or outboard elevator torque tube attach fastener is found loose or incorrectly installed. The FAA determined based on field evidence that identification of one loose fastener often indicates other fasteners may be affected.
CAB2706, which is not incorporated by reference in this AD, specifies performing an initial inspection within 800 flight hours or 12
months from date of receipt, whichever occurs first. This AD requires an initial inspection before the airplane accumulates 800 hours time-in-service TIS or within 200 hours TIS after the AD effectivity date, whichever occurs later.
CAB2706 also specifies, without sufficient data, that an inspection is not required for airplanes that have reached 4,000 hours. The FAA determined an inspection of high-time airplanes is necessary to verify whether these airplanes are affected. This AD requires a one-time visual inspection for airplanes that have already accumulated 4,000 hours TIS.
Costs of Compliance The FAA estimates that this AD
affects 232 airplanes of U.S. registry.

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