Airworthiness Directive · Amendment 39-19473 · Standard practices/structures
Bell Helicopter Textron Canada Limited Helicopters
This AD applies to Model 429 helicopters, serial number 57001 through 57260, with a pylon restraint spring assembly (spring assembly) forward rod end assembly (rod end) part number (P/N) 427-010-210-105 or aft rod end P/N 427-010-210-109 installed, certificated in any category.
We are superseding Airworthiness Directive (AD) 2017-13-03 for Bell Helicopter Textron Canada Limited (Bell) Model 429 helicopters. AD 2017-13-03 required adding an identification number to life-limited rod ends that do not have a serial number (S/N). Since we issued AD 2017- 13-03, an additional life-limited rod end was identified that is affected by the same unsafe condition. This new AD retains the requirements of AD 2017-13-03 and revises the Applicability paragraph by adding that rod end. The actions of this AD are intended to address an unsafe condition on these products.
You are responsible for performing each action required by this AD within the specified compliance time unless it has already been accomplished prior to that time.
(1) Within 140 hours time-in-service, clean and identify each rod end with the spring assembly serial number in accordance with the Accomplishment Instructions, paragraphs 3. through 8., of Bell Helicopter Alert Service Bulletin 429-15-19, dated February 26, 2015.
(2) Do not install a forward rod end P/N 427-010-210-105 or an aft rod end P/N 427-010-210-109 on any helicopter unless it has been marked with a serial number in accordance with paragraph (f)(1) of this AD.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
