AIRWORTHINESS DIRECTIVE AD/CESSNA 177/8
CESSNA 177 · Service Bulletins
Overview
This document is an Airworthiness Directive (AD) issued by the Civil Aviation Safety Authority of Australia concerning the Cessna 177 series aeroplanes. The directive, identified as AD/CESSNA 177/8, addresses control systems and was originally issued in 1970. It mandated the replacement of specific NAS 679 lock nuts due to a suspected manufacturing flaw. The directive has since been cancelled as of February 14, 2008, indicating that the unsafe condition no longer exists. This document serves as a formal record of the cancellation and provides background information on the original requirement.
- The Airworthiness Directive AD/CESSNA 177/8 was cancelled on February 14, 2008.
- The original directive required the replacement of NAS 679 lock nuts due to a suspected manufacturing flaw.
- The unsafe condition related to the lock nuts no longer exists as all affected nuts have been replaced.
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
- Service Bulletins
- Year
- 2008
- Pages
- 1
- File size
- 9.4 KB
- Publisher
- services.casa.gov.au
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In this document
Airworthiness Directive Cancellation
The Airworthiness Directive AD/CESSNA 177/8 was cancelled on February 14, 2008. This cancellation indicates that the previously identified unsafe condition related to the NAS 679 lock nuts has been resolved.
Background of the Directive
The original directive was issued in 1970, requiring a one-time replacement of NAS 679 lock nuts installed on Cessna aircraft between April and November 1969. The nuts were suspected of having a manufacturing flaw, which warranted the directive.
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 1 AIRWORTHINESS DIRECTIVE On the effective date specified below, and for the reasons set out in the background section, the CASA delegate whose signature appears below revokes Airworthiness Directive AD/CESSNA 177/8. Cessna 177 Series Aeroplanes AD/CESSNA 177/8 Control Systems 2/2008 Requirement: CANCELLED. This AD is cancelled on 14 February 2008. Background: This is a unique Australian AD issued in 1970 requiring a once off replacement of a number of NAS 679 lock nuts installed on Cessna aircraft between April and November in 1969. These nuts were suspected to have a manufacturing flaw. As all nuts would have now been replaced, the unsafe condition no longer exists. Charles Lenarcic Delegate of the Civil Aviation Safety Authority 20 December 2007
What's in the CESSNA 177 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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