AD/ENST 28/19 - Fuel Strainer Drain Valve - Modification

Overview

The Civil Aviation Regulations 1998, administered by the Civil Aviation Safety Authority, were enacted to ensure the safety of air travel and aviation operations in Australia. One particular legislative instrument, F2006B09574, pertains to Airworthiness Directives for Enstrom F-28 Series Helicopters, specifically addressing the modification of the fuel strainer drain valve to ensure it returns automatically to the closed position. This was introduced to address a safety concern identified with the fuel strainer drain valve on these helicopters, which could potentially lead to fuel contamination or loss of fuel pressure, thereby compromising flight safety. The policy objective behind this directive is to mitigate risks associated with the identified issue, ensuring that all Enstrom F-28 Series Helicopters meet the required safety standards to operate within Australian airspace. Compliance with this directive is mandatory, with a requirement to complete the modifications within 100 hours of time in service after 30 April 1978.

Scope and Application

The Civil Aviation Safety Authority (CASA) regulations, specifically Part 39 - 105 of the Civil Aviation Regulations 1998, govern the airworthiness of aircraft within Australia. The Airworthiness Directive AD/ENST 28/19, concerning Enstrom F-28 Series helicopters, applies to all models of this aircraft type and mandates the modification of the fuel strainer drain valve P/N K9000S-1A to ensure it returns automatically to the closed position. This directive is a critical safety measure aimed at preventing fuel system failures that could lead to catastrophic in-flight incidents. Compliance with this directive is mandatory and must be achieved within 100 hours of time in service after 30 April 1978, with incorporation of Forrestair Drawing No. FSA 78.1 being recognised as an acceptable means of achieving the required modification. The regulation applies nationwide across the Commonwealth of Australia, ensuring a uniform approach to aircraft safety and maintenance standards. This directive does not exclude any specific entities or operations, meaning all operators of the affected Enstrom F-28 Series helicopters must adhere to these requirements. The scope of application is further extended or refined through subordinate instruments, ensuring comprehensive coverage and compliance within the aviation industry.

Key Provisions

The Civil Aviation Regulations 1998, under Part 39 - 105, outline the Civil Aviation Safety Authority's (CASA) Schedule of Airworthiness Directives for Enstrom F-28 Series Helicopters, specifically in relation to AD/ENST 28/19. This directive mandates modifications to the fuel strainer drain valve P/N K9000S-1A (section 3/78). The requirement is that the fuel strainer drain valve must be modified to ensure it automatically returns to the closed position. This modification can be achieved by incorporating Forrestair Drawing No. FSA 78.1, which is recognised as a compliant method of fulfilling the directive. For parties governed by this regulation, the primary obligation is to ensure that the specified modification to the fuel strainer drain valve is implemented on all Enstrom F-28 Series Helicopters. This modification must be carried out within 100 hours of time in service following the directive's effective date of 30 April 1978. This timeline is critical, and compliance must be demonstrated to CASA within the stipulated period. Failure to comply with the requirements set forth in AD/ENST 28/19 can result in serious consequences. The Civil Aviation Act 1988 provides for various civil and criminal penalties for non-compliance with airworthiness directives. These penalties may include fines, imprisonment, or both, depending on the severity and nature of the breach. The specific maximum penalties are detailed within the Act and can vary based on the circumstances of the offence. It is imperative for operators and owners of Enstrom F-28 Series Helicopters to adhere strictly to the directive to avoid any legal repercussions.