AD 2020-14-01 Removing Affected Bolts From Service

SUMMARY: The FAA is adopting a new airworthiness directive (AD) for Bell Textron Inc. (Bell) Model 214ST helicopters.

This AD was prompted by the discovery of bolts with nonconforming external thread root radii. This AD requires removing the affected bolts from service and prohibits installing an affected bolt on any helicopter. The FAA is issuing this AD to address the unsafe condition on these products. This AD is effective August 11, 2020.

Supplementary Information: The FAA issued a notice of proposed rulemaking (NPRM) to amend 14 CFR part 39 by adding an AD that would apply to Bell Model 214ST helicopters with certain serial-numbered spindle to yoke bolts (bolts) part number (P/N) 214-010-262-103 installed. The NPRM published in the Federal Register on February 26, 2020 (85 FR 11003). The NPRM was prompted by the discovery of bolts with nonconforming external thread root radii. The NPRM proposed to require removing the affected bolts from service and would prohibit installing an affected bolt on any helicopter. The FAA is issuing this AD to address the unsafe condition on these products.

Since the FAA issued the NPRM, Bell Helicopter Textron Inc., changed its name to Bell Textron Inc. This AD reflects that change and updates the contact information.

FMI: www.regulations.gov