Overview

The Airworthiness Directive (AD) issued under the Civil Aviation Regulations 1998 (CAR 1998) is a legislative instrument designed to address the problem of potential fatigue cracking in the main rotor outboard strap fitting assembly of Bell Helicopter Textron 214 Series Helicopters. Enacted by the Civil Aviation Safety Authority (CASA) in 2002, the AD responds to findings from fatigue testing that could lead to failure of the strap fitting, separation of a main rotor blade, and loss of control of the helicopter. The policy objective of this AD is to ensure the airworthiness of affected helicopters by mandating specific actions to prevent such unsafe conditions. This includes creating a component history card for each strap fitting, recording total hours in service, and replacing the strap fitting if it has accumulated 2,500 or more hours in service, or if the total hours in service cannot be determined. Compliance with this directive is required within a specified timeframe to mitigate the risk of in-flight failure.

Scope and Application

This Airworthiness Directive (AD) issued by the Civil Aviation Safety Authority (CASA) pertains specifically to Bell Helicopter Textron 214 Series Helicopters, namely the 214B and 214B-1 models, which are equipped with a main rotor outboard strap fitting assembly bearing the part number 214-010-185-107. The directive applies to these aircraft to address a potential safety issue identified by the Federal Aviation Administration (FAA), which involves the risk of fatigue cracks in the mentioned strap fitting assembly. The primary objective of this AD is to ensure the safe operation of the affected helicopters by establishing a life limit for the strap fitting and mandating specific actions to prevent potential failures. The directive became effective on 11 December 2002 and requires compliance within 10 hours of flight time following this date unless the stipulated actions have already been completed. The AD also incorporates a requirement to update the maintenance manual to reflect the newly established life limit for the strap fitting.

Key Provisions

The Airworthiness Directive (AD) set forth in the legislation pertains specifically to Bell Helicopter Textron 214 Series Helicopters, particularly models 214B and 214B-1, equipped with a main rotor outboard strap fitting assembly (strap fitting) part number 214-010-185-107. The directive, issued under subregulation 39.1 (1) of the Civil Aviation Regulations 1998, mandates actions necessary to address an identified unsafe condition. The primary requirement of this AD, detailed in section 1, involves creating a component history card or equivalent record for each strap fitting, documenting the total hours of time in service and serial number. If the total hours in service are undeterminable, the strap fitting must be replaced before any further flight. Furthermore, if a strap fitting has accumulated 2,500 or more hours in service, it must also be replaced before any further flight. Following this initial action, the subsequent hours in service of the strap fittings must continue to be recorded. The obligations imposed by this Act on the operators and maintainers of the affected helicopters are clear and specific. They must first create a comprehensive record of each strap fitting's service hours and serial number. If the service hours cannot be determined, immediate replacement of the strap fitting is required. For strap fittings that have accumulated 2,500 or more hours in service, replacement is also mandated. Moreover, continuous monitoring and recording of the service hours for these strap fittings post-replacement are required to ensure compliance with the AD. Failure to comply with the AD can result in serious consequences, both civil and criminal. The AD stipulates that the compliance period begins within 10 hours of time in service after the AD's effective date of 11 December 2002. Non-compliance with the stipulated actions could potentially lead to the failure of the strap fitting, separation of a main rotor blade, and subsequent loss of control of the helicopter. While the AD itself does not explicitly state the maximum penalties for non-compliance, it is reasonable to infer that severe penalties, including fines and potential grounding of the aircraft, could be imposed by the Civil Aviation Safety Authority (CASA). These consequences underscore the importance of adhering to the AD to ensure the continued airworthiness and safety of the helicopters involved.