COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
Cessna 180, 182 and Wren 460 Series Aeroplanes
AD/CESSNA 180/76 Alternate Static Source Valve Inspection 4/98 DM
Applicability: Model 182S aeroplanes with the following serial numbers:
18280001, 18280002, 18280004 through 18280045 inclusive, 18280048 through
18280060 inclusive, 18280062 through 18280064 inclusive and 18280067 through
18280070 inclusive.
Requirement: 1. Fabricate placards with the following words, using letters at least 3mm (1/8 inch) in height, and install these placards in the cockpit within the pilot’s clear view:
- ‘IFR operation prohibited’
b. ‘Use of the alternate static air source is prohibited’
2. Inspect, in accordance with Cessna Single Engine Service Bulletin SB97-34-02 Revision 1 dated 22 December 1997, the alternate static air source valve to ensure that the static air source valve is not restricted by the identification placard and to ensure that the valve body does not separate from the valve flange.
3. If, as a result of the Requirement 2 inspection, the alternate static air source valve is found to be restricted by the identification placard, rework the alternate static air source assembly in accordance with SB97-34-02 Revision 1.
4. If, as a result of the Requirement 2 inspection, the valve body is found to separate from the valve flange, replace the alternate static air source assembly in accordance with the procedures contained in the aircraft maintenance manual.
Note: FAA Priority Letter AD 98-01-01 Amdt 39-10287 refers.
Compliance: 1. Prior to further flight after the effective date of this Directive.
2. Within 100 hours time in service (TIS) after the effective date of this Directive or 27 May 1998, whichever occurs first. Accomplishment of the Requirement 2 inspection is considered terminating action for the Requirement 1 placarding if no fault is found.
3. Prior to further flight after the Requirement 2 inspection. Rework of the alternate static air source assembly is considered terminating action for the Requirement 1 placarding.
4. Either:
- Prior to further flight to eliminate the operating limitations imposed by the Requirement 1 placarding;
or
b. Within the next 25 hours TIS after the Requirement 2 inspection provided the operating limits imposed by the Requirement 1 placarding are adhered to.
COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
This airworthiness directive becomes effective on 18 February 1998.
Background: The FAA has received reports from Cessna about the improper installation of the identification placard on the alternate static source. The placard was installed on the valve body in a location that covers the external orifice, which is the inlet for static air reference into the valve. If these assemblies are not corrected selection of alternate static air source will cause the altimeter, airspeed and vertical speed indicators to display erroneous indications.
Overview
The Civil Aviation Regulations 1998, under the authority of the Civil Aviation Safety Authority (CASA), was enacted to ensure the safety of civil aviation in Australia. The regulations provide a comprehensive framework for the regulation of civil aviation, including the issuance of airworthiness directives aimed at addressing specific safety issues. The AD/CESSNA 180/76 airworthiness directive, issued under the Civil Aviation Regulations 1998, was introduced in response to concerns regarding the improper installation of identification placards on the alternate static source of certain Cessna 180, 182 and Wren 460 series aeroplanes, which could lead to erroneous indications on the altimeter, airspeed and vertical speed indicators. The policy objective of the directive is to enhance aviation safety by ensuring that these aircraft are maintained in a safe and airworthy condition. The directive requires the fabrication and installation of placards, inspections and potential rework or replacement of the alternate static source valve assembly, with compliance deadlines set to ensure the timely implementation of these measures.
Scope and Application
The Civil Aviation Regulations 1998, specifically PART 39 - 105, pertains to airworthiness directives issued by the Civil Aviation Safety Authority (CASA) and applies to the specified models and serial numbers of Cessna 180, 182, and Wren 460 series aeroplanes. This directive is geographically applicable throughout Australia and aligns with the national standards set forth by CASA. The directive mandates the fabrication and installation of placards in the cockpit of affected aeroplanes to ensure compliance with safety regulations and to inform pilots of the prohibitions regarding IFR operations and the use of the alternate static air source. The directive applies to aeroplanes with particular serial numbers, and compliance must be achieved within specified timeframes to ensure the safety and airworthiness of these aircraft. CASA’s authority extends to enforcing these regulations through subordinate instruments, ensuring adherence to safety standards.
Key Provisions
The main operative sections of the airworthiness directive (AD/CESSNA 180/76) mandate specific actions to ensure the safe operation of certain Cessna 182S aeroplanes. Section 1 requires the fabrication and installation of placards in the cockpit to notify pilots of specific operational restrictions, namely, prohibiting IFR operations and the use of the alternate static air source. Section 2 details the inspection of the alternate static air source valve to ensure it is not restricted by the placard and that the valve body does not separate from the valve flange, in accordance with Cessna Service Bulletin SB97-34-02 Revision 1. If any issues are found during this inspection, Sections 3 and 4 outline the necessary corrective actions, including reworking or replacing the assembly as required.
The obligations imposed by this directive require compliance within specific timeframes. Firstly, the placards must be fabricated and installed before any further flight following the directive’s effective date. Secondly, the inspection must be carried out within 100 hours of time in service after the directive's effective date or by 27 May 1998, whichever is earlier. If no faults are found during the inspection, this action terminates the placarding requirement. Thirdly, any rework or replacement of the alternate static air source assembly must be completed before further flight. Lastly, the corrective actions must be completed either before further flight or within 25 hours of the inspection, provided the operational restrictions are adhered to.
Failure to comply with the requirements of this airworthiness directive may lead to serious safety issues, including erroneous readings on the altimeter, airspeed, and vertical speed indicators. The directive does not explicitly state penalties for non-compliance, but non-compliance with airworthiness directives in general can lead to severe consequences, including civil or criminal penalties under the Civil Aviation Act 1988 and potential grounding of the aircraft by the Civil Aviation Safety Authority (CASA). The penalties can include fines and imprisonment, reflecting the seriousness of ensuring air safety.