SCHEDULE OF AIRWORTHINESS DIRECTIVES
CESSNA 402C · Airworthiness Directives
Overview
This document is an Airworthiness Directive (AD) issued by the Civil Aviation Safety Authority of Australia, specifically addressing the Cessna 400 Series Aeroplanes, including the Cessna 402C. The directive outlines requirements for inspecting and repairing corrosion, disbonds, and deficient sealing between the wing skins and spars and/or ribs. It emphasizes the importance of maintaining the structural integrity of the aircraft wings to ensure safety and longevity. The directive mandates compliance inspections and repairs in accordance with specified service bulletins, with a focus on preventing moisture ingress that can lead to corrosion and reduced fatigue life of the wing components. The document is crucial for operators and maintenance personnel to ensure ongoing airworthiness and compliance with safety regulations.
- Inspect for corrosion and disbonds in wing structures as per Cessna Service Bulletin MEB95-11 Revision 1.
- Initial inspection must be completed by 2 July 1997 or 200 hours after 2 January 1997.
- Reinspections are required at intervals defined in the service bulletin.
- Corrosion can significantly reduce the fatigue life of the wing spar.
- The directive applies to multiple Cessna 400 series models, including the Cessna 402C.
Document
Source
Originally published by services.casa.gov.au. Sprinkle hosts a reference copy with an added summary, specifications and searchable full text.
Document details
- Type
- Airworthiness Directives
- Year
- 1998
- Pages
- 1
- File size
- 11 KB
- Publisher
- services.casa.gov.au
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In this document
Applicability
The Airworthiness Directive applies to all Cessna 402C, Cessna 404, Cessna 414A, and Cessna 421C aircraft. This broad applicability indicates that the directive addresses common issues across these models.
Requirement
Operators are required to inspect for and repair corrosion, disbonds, and deficient sealing between the wing skins and spars and/or ribs. This must be done in accordance with Cessna Service Bulletin MEB95-11 Revision 1, which provides detailed guidance on the inspection and repair processes.
Compliance
The initial compliance deadline for the required inspections is set for 2 July 1997 or 200 hours of time in service after 2 January 1997, whichever occurs first. Following the initial inspection, reinspections must be conducted at intervals specified in the Compliance section of the referenced service bulletin.
Background
The directive highlights the risks associated with corrosion due to moisture ingress, which can significantly reduce the fatigue life of the wing spar and adversely affect wing skin bonding. The amendment to the directive extends compliance parameters to align with the intervals specified in the Cessna Service Bulletin.
Safety notes
- Corrosion caused by moisture ingress can lead to structural failures.
- Compliance with the directive is essential for maintaining airworthiness.
Full document text
COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Cessna 400 Series Aeroplanes AD/CESSNA 400/108 Amdt 1 Bonded Wing 11/98 Applicability: All Cessna 402C. All Cessna 404. All Cessna 414A. All Cessna 421C. Requirement: 1. Inspect for and repair corrosion, disbonds and deficient sealing between the wing skins and spars and/or ribs in accordance with Cessna Service Bulletin MEB95-11 Revision 1. Note: This AD requires use of Cessna repair designs, but does not preclude the submission of proposed repairs with technical justification for approval by CASA. Compliance: 1. Unless already accomplished, inspect before 2 July 1997 or 200 hours time in service after 2 January 1997, whichever occurs first. Thereafter, reinspect at the intervals defined in the Compliance section of Cessna Service Bulletin MEB95-11 Revision 1. This Airworthiness Directive becomes effective on 8 October 1998. The original compliance period is unaffected. Background: The presence of corrosion caused by moisture ingress will significantly reduce the fatigue life of the wing spar and will also have a detrimental effect on wing skin bonding. This Amendment extends the compliance parameters to reflect the intervals specified in the Cessna Service Bulletin. The original issue of this Airworthiness Directive became effective on 2 January 1997.
What's in the CESSNA 402C TCDS
A Type Certificate Data Sheet (TCDS) is the FAA's record of what an aircraft type was approved as. It is the source of truth for weights, seating, fuel and the rules the design was certified against. Expand any line to see what it means.
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