AIRWORTHINESS DIRECTIVE
Cessna 120 · 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 Cessna 120 and 140 series aeroplanes. The directive outlines necessary actions to correct an unsafe condition that could arise from the improper routing of the primer line, which may lead to fuel exposure to the exhaust manifold. The AD mandates compliance during the next scheduled maintenance visit, ensuring that aircraft owners and maintenance personnel are aware of the required modifications to maintain airworthiness. The directive is effective from July 10, 2003, and is crucial for ensuring the safety of the aircraft in operation.
- The AD applies to Cessna 120 and 140 aircraft up to serial number 11842.
- Required actions include rerouting the primer line, adjusting the strainer, and installing a shield to the primer line.
- Compliance must be achieved at the next scheduled maintenance visit.
- The directive is effective from July 10, 2003.
- Failure to comply could lead to fuel exposure to the exhaust manifold, posing a fire risk.
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
- 2003
- Pages
- 1
- File size
- 17 KB
- Publisher
- services.casa.gov.au
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In this document
Applicability
The Airworthiness Directive applies to Cessna 120 and 140 aircraft with serial numbers up to and including 11842. This specification is critical for ensuring that the directive is followed by the relevant aircraft owners and maintenance teams.
Requirement
The directive requires the rerouting of the primer line, adjustment of the strainer, and installation of a shield to the primer line. These actions must be performed in accordance with Cessna Service Letter 34 to mitigate the risk of fuel exposure to the exhaust manifold.
Compliance
Compliance with the directive is required at the next scheduled maintenance visit. This ensures that the necessary modifications are made in a timely manner to maintain the safety and airworthiness of the aircraft.
Background
The background section explains that failure to reroute the primer line could result in fuel coming into contact with the exhaust manifold, creating a potential fire hazard. This highlights the importance of the actions mandated by the directive.
Safety notes
- Failure to reroute the primer line could lead to fuel coming into contact with the exhaust manifold.
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 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 120 and 140 Series Aeroplanes AD/CESSNA 120/11 Primer Line 7/2003 Applicability: Cessna 120 and 140 aircraft up to and including serial number 11842. Requirement: Unless previously accomplished reroute the primer line, adjust the strainer, and install a shield to the primer liner in accordance with Cessna Service Letter 34. Note: FAA AD 47-43-01 refers. Compliance: At the next scheduled maintenance visit. This Airworthiness Directive becomes effective on 10 July 2003. Background: Failure to reroute the primer could lead to fuel coming into contact with exhaust manifold. Jim Coyne Delegate of the Civil Aviation Safety Authority 28 May 2003 The above AD is notified in the Commonwealth of Australia Gazette on 18 June 2003.
What's in the Cessna 120 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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