Thu, Mar 04, 2021
AD 2021-03-12 Prompted By A Report Indicating That Certain Wing Anti-Ice Outboard Flexible Hoses Were Found Damaged
The FAA is superseding Airworthiness Directive (AD) 2019-03-27, which applied to all Dassault Aviation Model Falcon 10 airplanes. AD 2019-03-27 required repetitive detailed inspections of certain wing anti-ice outboard flexible hoses, and replacement of certain wing anti-ice outboard flexible hoses.
This AD continues to require the actions in AD 2019-03-27, and also adds a new life limit for the improved wing anti-ice flexible hose; as specified in a European Union Aviation Safety Agency (EASA) AD, which is incorporated by reference. This AD was prompted by a report indicating that certain wing anti-ice outboard flexible hoses were found damaged, likely resulting from the installation process, and the development of an improved wing anti-ice flexible hose. The FAA is issuing this AD to address the unsafe condition on these products. This AD is effective March 31, 2021.
Supplementary Information: The EASA, which is the Technical Agent for the Member States of the European Union, has issued EASA AD 2020-0127, dated June 4, 2020 (EASA AD 2020-0127) (also referred to as the Mandatory Continuing Airworthiness Information, or the MCAI), to correct an unsafe condition for all Dassault Aviation Model Falcon 10 airplanes.
The FAA issued a notice of proposed rulemaking (NPRM) to amend 14 CFR part 39 to supersede AD 2019-03-27, Amendment 39-19579 (84 FR 7801, March 5, 2019) (AD 2019-03-27). AD 2019-03-27 applied to all Dassault Aviation Model Falcon 10 airplanes. The NPRM published in the Federal Register on November 2, 2020 (85 FR 69269). The NPRM was prompted by a report indicating that certain wing anti-ice outboard flexible hoses were found damaged, likely resulting from the installation process, and the development of an improved wing anti-ice flexible hose. The NPRM proposed to continue to require the actions in AD 2019-03-27, as specified in an EASA AD. The NPRM also proposed to require adding a new life limit for the improved wing anti-ice flexible hose, as specified in EASA AD 2020-0127.
The FAA is issuing this AD to address damaged wing anti-ice outboard flexible hoses, which could lead to a loss of performance of the wing anti-ice protection system that is not annunciated to the pilot, and could result in reduced control of the airplane. See the MCAI for additional background information.
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