AD/BEECH 1900/42 - Ventilation Blower Assemblies

Administered by Department of Infrastructure, Transport, Regional Development, Communications, Sport and the Arts

Legislation au F2006B03661 In force Legislative Instrument

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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.

Beechcraft 1900 Series Aeroplanes

AD/BEECH 1900/42 Ventilation Blower Assemblies 3/2004

Applicability: Beech 1900 model aeroplanes, as listed below.

Model

1900

1900C

1900 (C-12J)

1900D

Serial Number

UA-3

UB-1 through UB-74 and UC-1 through UC-174 UD-1 through UD-6

UE-1 through UE-427

Requirement: 1. Unless previously accomplished, check the maintenance records, in accordance with Raytheon Mandatory Service Bulletin SB 21-3448 issued October 2002, to determine if a part number (P/N) 114-380028-1, 114-380028-3, 114-380028-5 or 114-380028-7 ventilation blower assembly is installed. If, by checking the maintenance records, it can be definitely demonstrated that a P/N 114-380028-1, 114-380028-3, 114-380028-5 or 114-380028-7 ventilation blower assembly is not installed, no further action is required.

2. If, by checking the maintenance records, it is determined that a P/N 114-380028- 1, 114-380028-3, 114-380028-5 or 114-380028-7 ventilation blower assembly is installed, carry out the following in accordance with SB 21-3448.

For P/N 114-380028-1 - Modify in accordance with Raytheon Service Bulletin (SB) No 2721, issued January 1997, prior to incorporating Electromechanic Technologies Modification Kit No 630-203-01 and changing the P/N to 114-380028-11.

Note 1: Blower assembly P/N 114-380028-1 may have already been modified in accordance with SB No 2721 as a result of AD/BEECH 1900/21 (FAA AD 97-22-16).

b. For P/N 114-380028-3 - Incorporate Advanced Industries Modification Kit No BC80A-901-3 and change the P/N to 114-380028-9.

c. For P/N 114-380028-5 with a serial number (S/N) of 2162 or above or with a S/N of 2162 with an ‘A’ suffix - No modification is required, change the P/N to 114-380028-11.

d. For P/N 114-380028-5 with a S/N prior to 2162 without an ‘A’ suffix - Incorporate Electromechanic Technologies Modification Kit No 630-203-01 and change the P/N to 114-380028-11.

e. For P/N 114-380028-7 - Incorporate Advanced Industries Modification Kit No BC80A-901-3 and change the P/N to 114-380028-9.

3. If, it cannot be definitely shown that a P/ N 114-380028-1, 114-380028-3, 114- 380028-5 or 114-380028-7 ventilation blower assembly is installed through the maintenance records check, carry out an inspection in accordance with SB 21- 3448 to determine the P/N of the installed ventilation blower assembly.

4. If, as a result of the Requirement 3 inspection, a ventilation blower assembly with P/ N 114-380028-1, 114-380028-3, 114-380028-5 or 114-380028-7 is found to be installed carry out Requirement 2.

5. Ventilation blower assembly P/N 114-380028-1, 114-380028-3, 114-380028-5 or 114-380028-7 may not be installed on any aeroplane as a replacement part unless it has been modified in accordance with Requirement 2 and re-identified with a new P/N.

Note 2: FAA AD 2004-01-13 Amdt 39-13427 refers.

Compliance: For Requirement 1 - Within 800 hours time in service (TIS) after the effective date of this Directive.

For Requirement 2 - Before further flight.

For Requirement 3 - Within 800 hours TIS after the effective date of this Directive. For Requirement 4 - Before further flight.

For Requirement 5 - As of the effective date of this Directive.

This Airworthiness Directive becomes effective on 18 March 2004.

Background: This Directive supersedes AD/BEECH 1900/21, which has been cancelled.

AD/BEECH 1900/21 required the replacement of the bearings on the vent blower assemblies with improved design bearings and installation of a thermal protection device for the vent blowers. That Directive resulted from reports of vent blower assembly bearings seizing and locking the blower motor.

This Directive requires the incorporation of further product improvement modifications on all affected vent blower assemblies. This Directive is the result of reports that vent blower assemblies modified in accordance with AD/BEECH 1900/21 are still malfunctioning.

James Coyne

Delegate of the Civil Aviation Safety Authority 4 February 2004

The above AD is notified in the Commonwealth of Australia Gazette on 25 February 2004.

Overview

The Airworthiness Directive AD/BEECH 1900/42, issued on 3 March 2004, is a legislative instrument under subregulation 39.1 (1) of the Civil Aviation Safety Regulations 1998 (CASR 1998), and it was enacted by the Civil Aviation Safety Authority (CASA) to address ongoing safety concerns with the ventilation blower assemblies of the Beechcraft 1900 series aeroplanes. This directive aims to correct unsafe conditions identified with specific part numbers of the ventilation blower assemblies, following reports of continued malfunctions despite previous modifications mandated by earlier directives. The policy objective is to enhance the safety of these aircraft by ensuring that all affected ventilation blower assemblies are appropriately modified or replaced, thereby mitigating the risk of further incidents. This Airworthiness Directive applies to certain models and serial numbers of the Beechcraft 1900 aeroplanes and mandates specific actions to be undertaken within prescribed timeframes to ensure compliance.

Scope and Application

This Airworthiness Directive (AD) issued under subregulation 39.1 (1) of the Civil Aviation Safety Regulations 1998 (CASR 1998) applies to Beechcraft 1900 model aeroplanes with specific serial numbers, including the 1900, 1900C, 1900 (C-12J), 1900D models. The AD mandates specific actions concerning ventilation blower assemblies to address unsafe conditions identified in the background section. The directive applies to the identified aircraft models and serial numbers and requires compliance with the outlined requirements within specified timeframes. No exclusions or exemptions are mentioned in the text, and the AD's geographic and jurisdictional reach is limited to the Commonwealth of Australia, as it is issued by the Civil Aviation Safety Authority (CASA) delegate. The AD becomes effective on 18 March 2004, superseding the previous AD/BEECH 1900/21, which has been cancelled.

Key Provisions

The Airworthiness Directive (AD/BEECH 1900/42) issued under subregulation 39.1 (1) of the Civil Aviation Safety Regulations 1998 mandates specific actions to address safety concerns with certain ventilation blower assemblies in Beechcraft 1900 series aeroplanes. The directive applies to Beech 1900 models, as specified by particular serial numbers (Section 1). The main requirements outlined in the directive involve checking the maintenance records to identify if certain part numbers (P/N) of ventilation blower assemblies are installed. If these parts are found, modifications or replacements must be carried out in accordance with detailed instructions (Section 2). If the part number cannot be confirmed through maintenance records, an inspection is mandated to determine the installed part number (Section 3). Additionally, certain part numbers are prohibited from being installed as replacements unless they have undergone the specified modifications (Section 5). The AD imposes several obligations on the operators and owners of the affected aircraft. They must ensure that the maintenance records are thoroughly checked for the specified part numbers and follow the detailed modification or replacement instructions provided. In cases where the part number cannot be confirmed through records, a physical inspection must be conducted to identify the installed part number (Section 3). These checks and actions must be completed within specified timeframes, such as within 800 hours of time in service after the directive's effective date (Section 4). Furthermore, operators and owners must adhere to the prohibition on installing certain part numbers unless they have been modified as prescribed (Section 5). Failure to comply with the requirements of this Airworthiness Directive can result in significant consequences. The AD does not explicitly outline penalties or specific legal consequences for non-compliance within the text. However, non-compliance with ADs issued by the Civil Aviation Safety Authority (CASA) can typically lead to enforcement actions by CASA, including fines, orders for corrective actions, and potential grounding of the aircraft until compliance is achieved. Additionally, operators and owners may face civil liabilities for any incidents or accidents resulting from non-compliance with airworthiness directives.

Area of Law: Aviation Law
Instrument: Legislative Instrument
Concepts: Compliance Obligations; Enforcement Powers; Reporting & Disclosure Obligations

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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.

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