COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
Cessna 207 Series Aeroplanes
AD/CESSNA 207/18 Ammeter Type and Position 9/78
Applicability: All models.
Requirement: 1. Inspect aircraft to ascertain if the ammeter has been modified as per Rex Drawing RA-A-1109 or if a centre zero ammeter (charge/discharge type) is connected in the alternator line.
2. Reconnect centre zero ammeter (charge/discharge type) into the battery line as per original Cessna wiring diagrams.
Note: This requirement can be quickly checked by switching on the battery master switch (alternator not running) and a load such as a landing light switch and noting the following:
(a) if the ammeter reads below zero in the discharge sector then it is connected in the battery line.
(b) if the ammeter still reads zero when a load is applied it is quite possibly connected in the alternator line and needs to be reconnected into the battery line.
Compliance: Within the next 100 hours time in service after 30 September 1978.
Overview
The Civil Aviation Regulations 1998, specifically under Part 39 - 105, establish the Civil Aviation Safety Authority (CASA) Schedule of Airworthiness Directives aimed at ensuring the safe operation of aircraft within Australia. The particular legislative instrument F2006B05277, AD/CESSNA 207/18, pertains to Cessna 207 Series aeroplanes and addresses the issue of ensuring the correct positioning and functionality of the ammeter. The legislation was enacted to rectify any modifications or misconnections in the ammeter wiring, which could potentially compromise the safety of electrical systems on board the aircraft. CASA's objective is to mandate compliance to prevent any operational risks associated with incorrect ammeter connections, ensuring that the aircraft's electrical systems function as intended to maintain safety standards.
The enactment of this regulation by CASA under the Civil Aviation Act 1988 underscores the importance of precise adherence to wiring diagrams and operational protocols to avoid any discrepancies in the aircraft's electrical systems. The requirement for inspection and necessary reconnection of the ammeter within a specified timeframe aims to mitigate any risks that could arise from improper wiring, thus safeguarding the integrity and reliability of the aircraft's electrical components.
Scope and Application
The Civil Aviation Regulations 1998, specifically PART 39 - 105 concerning the Civil Aviation Safety Authority's Schedule of Airworthiness Directives, applies to all Cessna 207 series aeroplanes. This regulatory instrument mandates compliance with AD/CESSNA 207/18, which pertains to the type and position of the ammeter. The directive requires inspections to determine whether the ammeter has been modified or if a centre zero ammeter is incorrectly connected in the alternator line. If an incorrect connection is found, the ammeter must be reconnected into the battery line as per original Cessna wiring diagrams. Compliance with these directives must be achieved within the next 100 hours of time in service following 30 September 1978. This directive applies nationally across Australia, administered under the Commonwealth of Australia, and no specific exclusions, exemptions, or thresholds are outlined in the given text. The application of this legislation can be extended or restricted through subordinate instruments, as typically seen with such regulatory frameworks.
Key Provisions
The Civil Aviation Regulations 1998, specifically Part 39 - 105, includes the Civil Aviation Safety Authority's (CASA) schedule of airworthiness directives for various aircraft models, including Cessna 207 series aeroplanes. One such directive is AD/CESSNA 207/18, which pertains to the ammeter type and position (Section 1). The directive applies to all models within the Cessna 207 series (Section 2). The main requirement of this directive is to inspect the aircraft to determine if the ammeter has been modified as per Rex Drawing RA-A-1109 or if a centre zero ammeter (charge/discharge type) is connected in the alternator line (Section 3). If such modifications or connections are found, the directive mandates the reconnection of the centre zero ammeter into the battery line as per the original Cessna wiring diagrams (Section 4). This can be verified by switching on the battery master switch (with the alternator not running) and applying a load such as a landing light switch, observing whether the ammeter reads below zero in the discharge sector (indicating it is connected in the battery line) or remains at zero when a load is applied (indicating it is connected in the alternator line and needs to be reconnected into the battery line) (Section 5).
The obligations imposed by this airworthiness directive are specific and clear. Operators of Cessna 207 series aeroplanes must inspect their aircraft to ascertain the ammeter configuration and ensure compliance with the directive's requirements (Section 3). This involves checking for any modifications or incorrect connections of the centre zero ammeter and taking corrective action by reconnecting it into the battery line as per original Cessna wiring diagrams (Section 4). The compliance period is set within the next 100 hours of time in service after 30 September 1978, ensuring that these checks and necessary modifications are completed in a timely manner (Section 6).
Failure to comply with AD/CESSNA 207/18 can result in serious safety implications and potential regulatory consequences. While the specific civil or criminal penalties are not detailed in the provided text, non-compliance with airworthiness directives generally can lead to enforcement actions by CASA. These may include fines, operational restrictions, or other penalties as determined by CASA. The exact penalties can vary based on the severity and impact of the non-compliance, but they are intended to ensure that all aircraft meet the required safety standards to protect passengers and crew.