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 39.1 (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.
Cessna 150, F150, 152 & F152 Series Aeroplanes
AD/CESSNA 150/48 Upper Shoulder Harness
Adjuster Spring
13/2004
Applicability: Models 150, 150A, 150B, 150C, 150D, 150E, 150F, 150G, 150H, 150J, and 150K
aircraft, with serial numbers listed in Cessna Single Engine Service Bulletin (SB) SEB86-8 Revision 1, dated 28 July 2003.
- Inspect only the upper shoulder harness adjuster (part number 443030-401) for the presence of a retainer spring, in accordance with SB SEB86-8 Revision 1.
If a retainer spring is found during the above inspection of the upper shoulder harness adjuster (part number 443030-401), before further flight, remove the spring by cutting each side, and stamp out the -401 identification number; in accordance with SB SEB86-8 Revision 1.
If a retainer spring is not found during the above inspection of the upper shoulder harness adjuster (part number 443030-401), before further flight, make an entry in the aircraft log book showing compliance with this Directive.
2. Only incorporate Cessna Accessory Kits that have been identified, inspected, and modified in accordance with the Requirement document.
Note: FAA AD 2004-19-01 Amdt 39-13795.
Compliance: 1. Within the next 25 hours time in service or at the next annual inspection after 23 December 2004, whichever occurs first.
2. As of the effective date of this Directive.
Note: Compliance with SB SEB86-8 original issue, dated 21 November 1986, constitutes terminating action for the requirements of this Directive, if shoulder harness adjuster part number 443030-401 was used.
This Airworthiness Directive becomes effective on 23 December 2004.
Cessna 150, F150, 152 & F152 Series Aeroplanes
AD/CESSNA 150/48 (continued)
Background: The manufacturer determined that some of the shoulder harness belt adjusters included in the affected shoulder harness accessory kits may have had a small wire spring inadvertently installed on the belt friction pin. The actions required by this Directive are intended to prevent slippage of the pilot/co-pilot shoulder harness, which could result in failure of the shoulder harness to maintain proper belt length adjustment and tension.
David Villiers
Delegate of the Civil Aviation Safety Authority 10 November 2004
The above AD is notified in the Commonwealth of Australia Gazette on 1 December 2004.
Overview
The Airworthiness Directive (AD) issued under the Civil Aviation Act 1988 was enacted in 2004 to address an identified safety issue with the Cessna 150, F150, 152, and F152 series aeroplanes. This AD specifically targets the upper shoulder harness adjusters of these aircraft models, which had been found to potentially include a small wire spring that could cause slippage of the shoulder harness. The Civil Aviation Safety Authority (CASA) issued this directive to ensure the safety of pilots and co-pilots by preventing harness slippage that could compromise the harness's ability to maintain proper adjustment and tension, thereby averting potential safety risks during flight. Compliance with this AD is mandatory, with specific deadlines set for inspections and necessary actions to be taken, ensuring that the affected aircraft meet the required safety standards.
Scope and Application
The Airworthiness Directive AD/CESSNA 150/48 applies specifically to the Cessna 150, F150, 152 & F152 Series aeroplanes, including models 150, 150A, 150B, 150C, 150D, 150E, 150F, 150G, 150H, 150J, and 150K, with serial numbers as listed in Cessna Single Engine Service Bulletin SEB86-8 Revision 1, dated 28 July 2003. The directive mandates inspections and modifications to the upper shoulder harness adjuster, which is part number 443030-401, to prevent potential slippage of the pilot/co-pilot shoulder harness. This slippage could compromise the harness's ability to maintain proper belt length adjustment and tension, thus posing a safety risk. The directive applies nationally across the Commonwealth of Australia, as it is issued by the Civil Aviation Safety Authority (CASA), and its compliance must be adhered to by all relevant aircraft operators and maintenance personnel within the country. The directive specifies that compliance must be achieved within 25 hours of time in service or at the next annual inspection after 23 December 2004, whichever comes first.
Key Provisions
The Airworthiness Directive (AD/CESSNA 150/48) issued under subregulation 39.1 (1) of the Civil Aviation Safety Regulations 1998 (CASR) applies to certain models of the Cessna 150 series aircraft. Specifically, it pertains to the aircraft models 150, 150A, 150B, 150C, 150D, 150E, 150F, 150G, 150H, 150J, and 150K, with serial numbers listed in Cessna Single Engine Service Bulletin (SB) SEB86-8 Revision 1, dated 28 July 2003. This AD requires the inspection of the upper shoulder harness adjuster (part number 443030-401) for the presence of a retainer spring and mandates subsequent actions based on the findings of this inspection. If a retainer spring is found, it must be removed by cutting each side and the -401 identification number must be stamped out, in accordance with SB SEB86-8 Revision 1. If no retainer spring is found, a compliance entry must be made in the aircraft log book. These actions must be taken before further flight and comply with the timeframes specified in the directive.
The obligations imposed by the AD include conducting a thorough inspection of the upper shoulder harness adjuster to determine if a retainer spring is present. If a spring is identified, it must be removed in the specified manner, and if no spring is found, a log book entry must be made. Additionally, only Cessna Accessory Kits that have been identified, inspected, and modified in accordance with the requirement document can be incorporated. The AD also specifies that compliance with SB SEB86-8 original issue, dated 21 November 1986, constitutes terminating action for the requirements of this Directive, if the shoulder harness adjuster part number 443030-401 was used. The compliance period for the AD is within the next 25 hours of time in service or at the next annual inspection after 23 December 2004, whichever occurs first.
Failure to comply with the AD can result in potential safety hazards, such as slippage of the pilot/co-pilot shoulder harness, which could lead to failure of the harness to maintain proper belt length adjustment and tension. The AD was issued to address this risk, and non-compliance may lead to civil aviation safety issues. The AD became effective on 23 December 2004, and its compliance is mandatory for the specified aircraft models. The AD was published in the Commonwealth of Australia Gazette on 1 December 2004.