# Airworthiness Directives; Eurocopter Canada Ltd. Model BO 105 LS A-3 Helicopters
> **Rule** · Final rule. · Published 2000-09-14 · 65 FR 55452
## Document
- **Document number:** 00-23582
- **Category:** airworthiness
- **Manufacturer:** Eurocopter Canada Ltd. Model BO 105 LS A-3
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 65 FR 55452
- **Publication date:** 2000-09-14
- **FAA docket:** Docket No. 99-SW-68-AD
## Abstract

This amendment supersedes an existing airworthiness directive (AD) that applies to Eurocopter Canada Ltd. Model BO 105 LS A-3 helicopters. That AD currently requires, before further flight, creating a component log card or equivalent record and determining the calendar age and number of flights on each tension-torsion (TT) strap, and inspecting and removing, as necessary, certain unairworthy TT straps. This amendment establishes a life limit for certain main rotor TT straps. This amendment is prompted by an accident in which a main rotor blade (blade) separated from a Eurocopter Deutschland GMBH (ECD) Model MBB-BK 117 helicopter due to fatigue failure of a TT strap. The same part-numbered TT strap is used on the Model BO 105 LS A-3 helicopters. The actions specified by this AD are intended to prevent fatigue failure of a TT strap, loss of a blade, and subsequent loss of control of the helicopter.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2000/09/14/00-23582/airworthiness-directives-eurocopter-canada-ltd-model-bo-105-ls-a-3-helicopters)
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