AIRWORTHINESS DIRECTIVE
For the reasons set out in the background section, the CASA delegate whose signature appears below revokes Airworthiness Directive (AD) AD/BEECH 55/89 and issues the following AD under subregulation 39.1 (1) of CAR 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.
Beechcraft 55, 58 and 95-55 (Baron) Series Aeroplanes
AD/BEECH 55/89
Amdt 1
Right Hand Fuselage Rivets 3/2003
Applicability: | Model Group 1 aircraft: | Serial Number |
| 58 | TH-1 through TH-1811 and TH-1813 through TH-1897 |
| Group 2 aircraft: | |
| 58A | TH-1 through TH-1811 and TH-1813 through TH-1897 |
Requirement: Group 1 and Group 2 aircraft:
Inspect for missing rivets between fuselage station (F.S.) 83.00 and F.S. 91.00 at water line (W.L.) 90.3.
Inspect in accordance with the ACCOMPLISHMENT INSTRUCTIONS paragraph of Raytheon Mandatory Service Bulletin SB 53-3341 Revision 1, Revised May 2000, or SB 3341 Revision 2, Revised October 2002, and the Baron Model 58 Series Maintenance Manual.
If rivets are found to be missing, before further flight, install these rivets.
Note: FAA AD 2003-01-01 Amdt 39-13012 refers.
Compliance: For Group 1 aircraft: Within 100 hours’ time-in-service after 22 March 2001. For Group 2 aircraft: Within 100 hours’ time in service after 20 March 2003.
The compliance time remains unchanged for aircraft affected by the original issue of this Directive.
This Amendment becomes effective on 20 March 2003.
Beechcraft 55, 58 and 95-55 (Baron) Series Aeroplanes
AD/BEECH 55/89 Amdt 1 (Continued)
Background: The manufacturer has identified several instances of missing rivets on affected aircraft. These rivets must be present for the fuselage to carry the ultimate load and prevent critical structural failure, with loss of aircraft control.
Amendment 1 is issued in response to a new FAA AD which corrects applicability.
The original issue of this Airworthiness Directive became effective on 22 March 2001.
David Alan Villiers
Delegate of the Civil Aviation Safety Authority 7 February 2003
The above AD is notified in the Commonwealth of Australia Gazette on 26 February 2003.
Overview
The Airworthiness Directive issued by the Civil Aviation Safety Authority (CASA) under subregulation 39.1 (1) of the Civil Aviation Regulations 1998, addresses an identified safety issue with the Beechcraft 55, 58 and 95-55 (Baron) Series Aeroplanes. The directive, F2006B04035, was enacted in 2003 to respond to instances of missing rivets in affected aircraft, which could potentially lead to structural failure and loss of control. This Airworthiness Directive revokes the earlier AD/BEECH 55/89 and updates the compliance requirements for aircraft within specified serial numbers. The directive aims to ensure that the safety measures outlined are implemented to prevent the unsafe condition from occurring, thereby maintaining the airworthiness of the aircraft and protecting the safety of those on board.
Scope and Application
The Airworthiness Directive (AD) AD/BEECH 55/89, as amended by Amendment 1, applies specifically to Beechcraft 55, 58 and 95-55 (Baron) Series aeroplanes that fall into two specified groups based on their serial numbers. Group 1 includes aircraft with serial numbers ranging from 58TH-1 to TH-1811 and from TH-1813 to TH-1897, while Group 2 encompasses the same serial number range. The AD mandates that these aircraft must undergo inspections for missing rivets between fuselage station (F.S.) 83.00 and F.S. 91.00 at water line (W.L.) 90.3, following the instructions detailed in the Raytheon Mandatory Service Bulletin SB 53-3341 Revision 1 or SB 3341 Revision 2 and the Baron Model 58 Series Maintenance Manual. If missing rivets are detected, they must be installed before further flight to ensure the structural integrity of the fuselage and prevent potential critical failure. This directive applies on a national level within the Commonwealth of Australia, as notified in the Commonwealth of Australia Gazette, and is enforced by the Civil Aviation Safety Authority (CASA). The AD does not explicitly state any exclusions or exemptions, but compliance is contingent upon the specific conditions and timeframes mentioned in the directive.
Key Provisions
The Airworthiness Directive (AD) issued by the Civil Aviation Safety Authority (CASA) revokes AD/BEECH 55/89 and introduces new requirements for Beechcraft 55, 58 and 95-55 (Baron) Series Aeroplanes. Specifically, section (a) of the AD requires the inspection of right-hand fuselage rivets between fuselage stations (FS) 83.00 and 91.00 at water line (WL) 90.3 on Group 1 and Group 2 aircraft. If missing rivets are discovered, they must be installed before further flight. The inspection must follow the instructions in Raytheon Mandatory Service Bulletin SB 53-3341 Revision 1 or Revision 2 and the Baron Model 58 Series Maintenance Manual.
The AD imposes specific obligations on the operators of Group 1 and Group 2 aircraft. Group 1 aircraft must comply within 100 hours’ time-in-service following 22 March 2001, while Group 2 aircraft must comply within 100 hours’ time in service after 20 March 2003. These obligations ensure that the affected aircraft meet the safety standards required by the AD, with the compliance timeframe remaining unchanged for aircraft already affected by the original AD issue.
Failure to comply with the requirements of this AD may result in serious safety implications, as the missing rivets can lead to critical structural failure and loss of aircraft control. While the legislation does not explicitly state penalties for non-compliance, CASA has the authority to enforce compliance through various means, including fines, suspension or revocation of airworthiness certificates, and other regulatory actions. Operators are expected to adhere to the AD to maintain the airworthiness of their aircraft and ensure safety in flight.