Airworthiness Directive 2024-23547
one-timeAirworthiness Directives; Columbia Helicopters, Inc., and Restricted Category Model CH-47D Helicopters
What this AD requires
The FAA is adopting a new airworthiness directive (AD) for Columbia Helicopters, Inc., Model 234 helicopters and restricted category Model CH-47D helicopters. This AD was prompted by two reports of a flight control rigid connecting link (link) failure, due to a manufacturing defect. This AD requires removing certain links from service and prohibits installing those links. The FAA is issuing this AD to address the unsafe condition on these products.
Which aircraft AD 2024-23547 applies to
Applies only to helicopters with a flight control rigid connecting link P/N 145C3340-10 having manufacturing CAGE code 59213, P/N 145C3340-10 with an unknown manufacturing CAGE code, a link with an unknown P/N having manufacturing CAGE code 59213, or a link with an unknown P/N and unknown manufacturing CAGE code, installed. Applies to (1) Columbia Helicopters, Inc. Model 234 helicopters, certificated in any category, and (2) restricted category Model CH-47D helicopters; current type certificate holders include, but are not limited to, Billings Flying Service, Inc., Columbia Helicopters, Inc., Tandem Rotor, LLC, and Unical Air Inc.
Whether AD 2024-23547 actually applies to your aircraft (by serial and installed parts) and whether it’s already complied with comes from that aircraft’s records.
How AD compliance is recorded
A valid compliance record (14 CFR 43.9) states:
Tailplate reads a tail number’s logbooks and matches every applicable AD — including this one — to its compliance evidence, with recurring next-due dates computed.
Look up a tail number →Read the full directive (Federal Register)Applicability is derived from the FAA directive corpus and is advisory, not a legal airworthiness determination. Compliance is established only from an aircraft’s actual records.