Airworthiness Directive AD/CESSNA 150/31 Amdt 5
Reims-Cessna F152 · Service Bulletins
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 vertical fin attach brackets, nutplates, and fittings on various Cessna and Reims-Cessna aircraft models. The directive mandates inspections and potential replacements of specific components to prevent structural failures that could lead to the separation of the tail assembly from the aircraft. The AD applies to multiple models, including the Reims-Cessna F152, and outlines compliance timelines and methods for inspection. It is essential for operators and maintenance personnel to adhere to the requirements to ensure the safety and airworthiness of the affected aircraft.
- The AD applies to Cessna 150, F150, 152, and Reims-Cessna F152 models.
- Inspect vertical fin attach brackets and nutplates as per specified service bulletins.
- Compliance for FRA150L and FRA150M is within 100 hours after 26 October 2006; other models within 100 hours after 31 November 1984.
- If cracks or corrosion are found during inspection, brackets must be replaced immediately.
- The directive was issued due to safety concerns regarding potential structural failures.
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
- 2022
- Pages
- 2
- File size
- 215 KB
- Publisher
- services.casa.gov.au
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In this document
Applicability
The directive applies to a range of Textron Aviation (Cessna) aircraft models, specifically including the Cessna 150 series, F150 series, and the Reims-Cessna F152. It lists serial numbers for each model that are affected by the directive, ensuring that operators can identify whether their aircraft is included.
Requirement
Operators are required to inspect the vertical fin attach brackets and nutplates as per the methods detailed in Cessna Service Information Letter SE 79-49 Revision 1 or Reims Aviation Service Bulletin No. 24 Revision 1. The inspection involves removing paint from specific areas and checking for cracks or corrosion. If any issues are found, the affected brackets must be replaced.
Compliance
The compliance timeline for inspections varies by aircraft model. For FRA150L and FRA150M models, inspections must occur within 100 hours of service after a specified date, with subsequent inspections every 100 hours until replacements are made. For all other models, the initial inspection must occur within 100 hours after a different specified date, with the same follow-up requirements.
Background
The directive was issued due to findings of cracked vertical fin attachment nutplates on in-service aircraft, which could lead to structural failures. The document outlines the history of amendments to the directive, including changes to applicability and compliance requirements.
Safety notes
- Undetected cracking could result in structural failure and separation of the tail assembly from the aircraft.
- Inspection requirements are not needed if specific nutplates are replaced with approved alternatives.
Full document text
COMMONWEALTH OF AUSTRALIA Civil Aviation Safety Regulations 1998 CIVIL AVIATION SAFETY AUTHORITY Regulation 39.001 Page 1 of 2 AIRWORTHINESS DIRECTIVE On the commencement date specified below, and for the reasons set out in the background section, the CASA delegate whose signature appears below repeals Airworthiness Directive (AD) AD/CESSNA 150/31 Amdt 4 and issues the following AD under subregulation 39.001 (1) of CASR and subsection 33 (3) of the Acts Interpretation Act 1901. The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct an 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. Textron Aviation (Cessna) 150, F150, 152 & F152 Series Aeroplanes AD/CESSNA 150/31 Amdt 5 Vertical Fin Attach Brackets, Nutplates and Fittings 7/2022 Applicability: Textron Aviation (formerly Cessna/Reims) aircraft models listed below: Models 150F, 150G, 150H, 150J, 150K, 150L and 150M with serial numbers 15061533 through 15079405; Models A150K, A150L and A150M, with serial numbers A1500001 through A1500734; Model 152 aircraft, with serial numbers 15279406 through 15284541; Model A152 aircraft, with serial numbers A1520735 through A1520943; Models F150F, F150G, F150H and F150J, with serial numbers F150-0001 through F150-0529; Models F150K, F150L and F150M, with serial numbers F15000530 through F15001428; Models FA150K and FA150L, with serial Numbers FA1500001 through FA1500120; Model F152 aircraft with serial numbers F15201429 through F15201828; Model FA152 aircraft with serial numbers FA1520337 through FA1520372; Model FRA150L and FRA150M aircraft, with serial numbers FRA1500121 through FRA1500336. Requirement: 1. Inspect the attach bracket and nutplates using the method detailed in Cessna SIL No. SE 79-49 Revision 1, or Reims Aviation Service Bulletin No. 24 Revision 1, both as in force on the commencement date of this AD, as applicable. 2. a. Remove paint from both base radii on each of the port and starboard rear attach fittings; b. Visually check the radius area, inspecting for cracking and/or corrosion. If there are indications of either condition the brackets must be replaced; c. Re-protect the subject area with an approved protective treatment. Note 1: United States of America Federal Aviation Administration (FAA) AD 80-11-04 is the basis for this AD. European Aviation Safety Agency (EASA) AD 2006-0267 also refers. COMMONWEALTH OF AUSTRALIA Civil Aviation Safety Regulations 1998 CIVIL AVIATION SAFETY AUTHORITY Regulation 39.001 Textron Aviation (Cessna) 150, F150, 152 & F152 Series Aeroplanes AD/CESSNA 150/31 Amdt 5 (continued) Page 2 of 2 Note 2: The inspection requirements of this Directive are not required if the part number NAS 1068A4 nutplates are replaced with AN365-428, MS20365-428, MS21042L4, or MS21044N4 nuts. Compliance: For FRA150L and FRA150M aircraft, inspect within 100 hours’ time in service after 26 October 2006, and thereafter at intervals not exceeding 100 hours’ time in service until the affected nutplates are replaced (See Requirement Note 2). For all other aircraft, inspect within 100 hours’ time in service after 31 November 1984, and thereafter at intervals not exceeding 100 hours’ time in service until the affected nutplates are replaced (See Requirement Note 2). The compliance time for these aircraft is unchanged. This AD commences on 11 April 2022. Background: Cracked vertical fin attachment nutplates have been found on in-service aircraft. Undetected cracking could result in structural failure and consequent separation of the vertical or vertical and horizontal tail assembly from the aircraft. Amendment 3 corrected aircraft applicability so as to only include aircraft fitted with the fabricated attach bracket. Amendment 4 was issued to introduce optional terminating action to the inspection requirements of this Directive, as specified in EASA AD 2006-0267 and FAA AD 80-11-04; and to include Models FRA150L and FRA150M aircraft. Amendment 5 is issued to exclude pre 1966 aircraft from the AD effectivity to align with Cessna SIL SE79-49 Revision 1 and FAA AD 80-11-04. David Punshon Delegate of the Civil Aviation Safety Authority 1 April 2022