AD/SWSA226/91 Amdt 1 - Improved Wheel Well Fire Protection

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AIRWORTHINESS DIRECTIVE

For the reasons set out in the background section, the CASA delegate whose signature appears below revokes Airworthiness Directive (AD) AD/SWSA226/91 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.

 

Fairchild (Swearingen) SA226 and SA227 Series Aeroplanes

 

AD/SWSA226/91

Amdt 1


Improved Wheel Well Fire Protection 8/2002

DM

 

Applicability: Model SA226-T aeroplanes, Serial Numbers (SN) T201 to T291, except T276.

 

Model SA226-T(B) aeroplanes, (SNs)T(B) 276 and T(B) 292 to T(B) 417. Model SA226-AT aeroplanes, (SNs)AT001 to AT074.

Model SA226-TC aeroplanes, (SNs)TC201 to TC419. Model SA227-TT aeroplanes, (SNs) TT421 to TT555.

Model SA227-TT (300) aeroplanes, (SNs) TT447, TT465, TT471, TT483, TT512, TT518, TT521, TT527, TT529, and TT536.

Model SA227-AT aeroplanes, (SNs) AT421, AT423 to AT631, and AT695.

 

Model SA227-AC aeroplanes, (SNs) AC406, AC415, AC416, and AC420 to AC599 and AC600 to AC789.

 

Requirement: The following Requirements must be carried out in accordance with the following:

 

(i)       Fairchild Aircraft Service Bulletin (SB) No. 226-26-003, incorporating the following pages:

 

Pages

Date

16

Issued: 1 March, 2000.

14, 15

Issued: 1 March, 2000, Revised: 27 June, 2000.

17

Issued: 1 March, 2000, Revised: 2 October, 2000.

4, 5, 6, 7, 10, 11, 12 and

13

Issued: 1 March, 2000, Revised: 19 January, 2001.

1, 2, 3, 8 and 9

Issued: 1 March, 2000, Revised: 10 August, 2001.

 

AND

 

(ii)    Fairchild Aircraft Service Bulletin (SB) No. 227-26-002, incorporating the following pages:

 

Pages

Date

1, 2, 8, and 9

Issued: 1 March, 2000.

7

Issued: 1 March, 2000, Revised: 27 June, 2000.

3, 4, 5, and 6

Issued: 1 March, 2000, Revised: 2 October,2000.

  1. For all applicable aeroplanes, except those equipped with an anti-skid/power brake system, replace each brake shuttle valve with part number (P/N) MS28767- 4 brake shuttle valve in accordance with the ACCOMPLISHMENT INSTRUCTIONS section of Fairchild Aircraft SB No. 226-26-003 Revision 4, or Fairchild Aircraft SB No. 227-26-002, as applicable.
  2. For all applicable aeroplanes, install a shield over the hydraulic lines in accordance with the ACCOMPLISHMENT INSTRUCTIONS section of Fairchild Aircraft Service Bulletin No. 226-26-003 Revision 4, or Fairchild Aircraft SB No. 227-26-002, as applicable.

 

3.        For all aeroplane models within the SA226 series, replace the rubber fuel hose with a metal device in accordance with the ACCOMPLISHMENT INSTRUCTIONS section of Fairchild Aircraft SB No. 226-26-003 Revision 4.

4.        No person shall install any brake shuttle valve that is not a P/N MS28767-4 brake shuttle valve or a fuel hose that is made of rubber.

 

Note: FAA AD 2002-08-02 refers superseding FAA AD 2001-20-14.

 

Compliance: For Requirement 1, 2 and 3: Unless already complied with in accordance with the original issue of this Directive; within 500 hours time- in-service (TIS) from the effective date of this Directive, or within 6 months from the effective date of this Directive, whichever occurs first.

For Requirement 4: From 6 March 2002, the date of original issue of this Directive. This Amendment becomes effective on 3 July 2002.

 

Background: This Directive has been amended to reflect the contents of FAA AD 2002-08-02 which removes the applicability of the Model SA226-T(A) aeroplane and adds certain Model SA226-T and Model SA227-AC serial numbers to the applicability.

The manufacturer issued Service Bulletins (SB) 226-26-003 and 227-26-002 on 1 March, 2000, that indicated a potential problem for a brake assembly to overheat due to a faulty brake shuttle valve causing the brake assembly to drag and overheat.

Should this occur, there is a further potential for hydraulic or fuel line damage to occur if a overheated brake assembly is retracted into the main wheel well, with the possibility of a fire occurring if a hydraulic or fuel line is ruptured. This Directive is therefore issued to reduce the potential of a main gear wheel well fire occurring.

The original issue of this Airworthiness Directive became effective on 6 March 2002.


 

Eugene Paul Holzapfel

Delegate of the Civil Aviation Safety Authority 21 June 2002

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 


The above AD is notified in the Commonwealth of Australia Gazette on 3 July 2002.

Overview

The Civil Aviation Safety Authority (CASA) introduced the Airworthiness Directive AD/SWSA226/91 Amendment 1 in 2002 to address safety concerns related to the potential for brake assemblies in Fairchild (Swearingen) SA226 and SA227 series aeroplanes to overheat, drag, and overheat due to faulty brake shuttle valves. This overheating can potentially lead to hydraulic or fuel line damage, and in extreme cases, a fire in the main gear wheel well. The directive was enacted under the authority of the Civil Aviation Regulations 1998 (CAR 1998) and mandates specific actions to rectify these safety issues, such as replacing brake shuttle valves and installing shields over hydraulic lines. The policy objective is to mitigate the risk of main gear wheel well fires by ensuring that the specified modifications are carried out within the stipulated timeframes, thereby enhancing the overall airworthiness of the affected aircraft models.

Scope and Application

The Airworthiness Directive (AD) AD/SWSA226/91 Amdt 1, issued by the Civil Aviation Safety Authority (CASA) under subregulation 39.1 (1) of the Civil Aviation Regulations 1998, applies specifically to certain models of Fairchild (Swearingen) SA226 and SA227 series aeroplanes, which include SA226-T, SA226-T(B), SA226-AT, SA226-TC, SA227-TT, SA227-TT (300), SA227-AT, SA227-AC, with specified serial numbers. This directive mandates corrective actions to address an unsafe condition related to the brake system and fuel hoses that could potentially lead to wheel well fires. The actions required include replacing brake shuttle valves with part number MS28767-4, installing shields over hydraulic lines, and replacing rubber fuel hoses with metal devices. The directive is applicable across the Commonwealth of Australia and sets specific compliance timeframes for the required actions. This AD revokes the previous AD/SWSA226/91 and incorporates amendments that refine the applicability and compliance requirements, ensuring that the measures are implemented to maintain airworthiness standards.

Key Provisions

The Airworthiness Directive (AD) AD/SWSA226/91 and its amendment AD/SWSA226/91 Amdt 1 specifically apply to certain models and serial numbers of Fairchild (Swearingen) SA226 and SA227 series aeroplanes. The AD applies to the SA226-T, SA226-T(B), SA226-AT, SA226-TC, SA227-TT, SA227-TT (300), SA227-AT, and SA227-AC models with specified serial numbers. The requirements outlined in the AD include replacing each brake shuttle valve with a P/N MS28767-4 brake shuttle valve, installing a shield over the hydraulic lines, and replacing the rubber fuel hose with a metal device. These requirements are to be carried out in accordance with the instructions provided in Fairchild Aircraft Service Bulletins (SB) No. 226-26-003 Revision 4 and No. 227-26-002, and the accomplishment instructions within these bulletins. Furthermore, the AD mandates that no person shall install any brake shuttle valve that is not a P/N MS28767-4 brake shuttle valve or a fuel hose made of rubber. The AD imposes several obligations on the parties and entities it governs. Operators of the specified aircraft must ensure that the required modifications are completed within the stipulated timeframes. For requirements 1, 2, and 3, compliance must be achieved within 500 hours time-in-service (TIS) from the effective date of the AD, or within six months from the effective date, whichever comes first. Requirement 4, which prohibits the installation of certain brake shuttle valves and rubber fuel hoses, must be complied with from the date of the original issue of the AD. The AD also mandates that operators must adhere to the instructions provided in the relevant Fairchild Aircraft Service Bulletins to ensure the modifications are carried out correctly. The AD includes specific penalties and consequences for non-compliance. Operators who fail to comply with the requirements of the AD may face civil penalties, including fines. The maximum penalty for non-compliance with airworthiness directives in Australia can be substantial, reflecting the importance of adhering to safety regulations. Additionally, non-compliance could result in the aircraft being grounded until the required modifications are completed, which could have significant operational and financial implications for the operator. It is important to note that the AD also impacts the manufacturer and service providers, who must ensure that the modifications are performed to the required standards. Failure to do so could result in legal action, fines, and damage to their reputation.

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Sourced from the Federal Register of Legislation at 26 August 2026. For the latest information on Australian Government law please go to https://www.legislation.gov.au.