SCHEDULE OF AIRWORTHINESS DIRECTIVES
Cirrus SR22 · Airworthiness Directives
Overview
This document is an Airworthiness Directive (AD) issued by the Civil Aviation Safety Authority (CASA) of Australia, specifically addressing safety concerns related to the Cirrus Design SR20 and SR22 series aeroplanes. The directive outlines necessary actions to correct identified unsafe conditions, particularly focusing on the exhaust heat exchanger. The AD mandates inspections and potential replacements of components to prevent hazardous conditions such as carbon monoxide leaks into the cabin, which could incapacitate pilots. Compliance with the directive is crucial for maintaining airworthiness and ensuring pilot safety.
- Initial inspection of the exhaust system must be done within 25 hours TIS or 3 months after the AD effective date.
- Repetitive inspections should occur every 100 hours TIS thereafter.
- If defects are found or exhaust odour is detected, replace the heat exchanger weldment and shroud before further flight.
- This AD is effective from 28 August 2008.
- The directive applies to Cirrus SR20 serial numbers 1005 through 1815 and the SR22 series.
Document
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Applicability
The AD applies to Cirrus Design Corporation Model SR20 aeroplanes, specifically serial numbers 1005 through 1815. It also pertains to the SR22 series, indicating that the directive is relevant for both aircraft models.
Requirements
The directive outlines two main requirements: First, a pressurization inspection/check of the exhaust system must be performed in accordance with Cirrus Service Bulletin SB 2X-78-07 R1. Second, if defects are found or exhaust odour is detected, the heat exchanger weldment and shroud must be replaced with improved components as specified in the service bulletin.
Compliance
For the first requirement, the initial inspection must be completed within 25 hours of time-in-service or within 3 months of the AD's effective date, whichever comes first. Subsequent inspections should occur at intervals not exceeding 100 hours of time-in-service. For the second requirement, replacement of defective components must occur before further flight.
Background
The AD was issued following reports of engine exhaust fumes entering the cabin of Cirrus SR20 aircraft. The directive aims to identify and rectify leaks in the exhaust system to prevent carbon monoxide exposure, which poses a serious risk to pilot safety.
Safety notes
- Failure to comply with the inspection and replacement requirements could lead to carbon monoxide exposure in the cabin, risking pilot incapacitation.
Full document text
COMMONWEALTH OF AUSTRALIA (Civil Aviation Safety Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Page 1 of 2 AIRWORTHINESS DIRECTIVE For the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (AD) under subregulation 39.001(1) of CASR 1998. The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section. Cirrus Design SR20 and SR22 Series Aeroplanes AD/CIRRUS/10 Exhaust Heat Exchanger Cracks 9/2008 Applicability: Cirrus Design Corporation Model SR20 aeroplanes, serial numbers 1005 through 1815. Requirement: 1. Perform a pressurization inspection/check on the exhaust system in accordance with Cirrus Service Bulletin SB 2X-78-07 R1, Revision 1, dated 18 December 2007. 2. If the exhaust system is found defective during the inspection/check detailed in Requirement 1 of this AD or an exhaust odour is detected inside the aeroplane cabin, replace the heat exchanger weldment and shroud with new improved heat exchanger weldment and new shroud in accordance with Cirrus Service Bulletin SB 2X-78-07 R1, Revision 1. Later revisions of the above SB, approved by the United States Federal Aviation Administration (FAA) as an Alternate Method of Compliance (AMOC) to FAA AD 2008-11-18 are considered acceptable for compliance with the equivalent Requirements of this Directive. Note: FAA AD 2008-11-18 Amdt 39-15541 dated 22 May 2008 refers. Compliance: For Requirement 1: Initially within the next 25 hours time-in-service or within the next 3 months after the effective date of this AD, whichever occurs first; and Repetitively thereafter at intervals not to exceed every 100 hours TIS. For Requirement 2: Before further flight after the inspection/check in which the exhaust system is found defective or an exhaust odour is detected. This Airworthiness Directive becomes effective on 28 August 2008. COMMONWEALTH OF AUSTRALIA (Civil Aviation Safety Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Cirrus Design SR20 and SR22 Series Aeroplanes AD/CIRRUS/10 (continued) Page 2 of 2 Background: This AD results from the discovery of engine exhaust fumes in the cabin of Cirrus Design Corporation Model SR20 airplanes. The issuing of this AD is to detect and correct leaks in the exhaust system, which could result in exhaust gases leaking into the cabin heating system. This condition could lead to carbon monoxide in the cabin and incapacitation of the pilot. James Coyne Delegate of the Civil Aviation Safety Authority 16 July 2008
