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 1900/41 Elevator Trim System 13/2003
DM
Applicability: All Models 1900, 1900C, and 1900D aircraft.
Requirement: 1. Mark with a pen, the applicable figure in the maintenance manual as referenced below. The depiction in the referenced figures is incorrect for the elevator trim drum only, and depicts the cable drum at 180 degrees from the installed position and shows the open, keyed side of the drum instead of the flat side of the drum. Insert corrected figure (Figure 1 of this Directive) into the applicable maintenance manual, and identify it accordingly, as specified in Raytheon Safety Communique No. 234, dated September 2003:
- Figure 9 of Chapter 27-10-00 of the Model 1900/1900C Airliner Maintenance Manual (114-590021-7B). Clearly note in pen that existing portion of Figure 9 is correct for the aileron trim drum only and insert corrected figure (Figure 1 of this Directive) marked in pen as correct for the elevator trim drum only; or,
b. Mark out Figure 201 of Chapter 27-30-04 of the Model 1900D Airliner Maintenance Manual 125-590000-15). Insert corrected figure (Figure 1 of this Directive).
2. Incorporate the applicable temporary revision into the maintenance manuals as specified in Safety Communique No. 234, as follows:
- Temporary Revision No. 27-5 to the Model 1900/1900C Airliner Maintenance Manual: Revised ELEVATOR TRIM OPERATIONAL CHECK; or,
b. Temporary Revision No. 27-9 to the Model 1900D Airliner Maintenance Manual: Added MANUAL ELEVATOR TRIM OPERATIONAL CHECK.
3. Accomplish the elevator trim operational check that is specified in the applicable maintenance manual and temporary revisions to the maintenance manual, as referenced in Requirement 2 and specified in Safety Communique No. 234.
Beechcraft 1900 Series Aeroplanes
AD/BEECH 1900/41 (continued)
Figure 1
Note: FAA AD 2003-20-10 Amdt 39-13328 refers.
Compliance: 1. Before the next time maintenance is to be performed on the elevator trim system.
2. Before the next time maintenance is to be performed on the elevator trim system.
3. Before further flight following maintenance on the elevator trim system. This Airworthiness Directive becomes effective on 12 November 2003.
Background: The FAA issued AD 2003-20-10 as a result of an analysis of the maintenance procedures of the elevator trim system. The actions required by this Directive are to detect and correct any maintenance-induced problems with the elevator trim system installation before problems occur during operation. Such a condition could lead to difficulties in controlling the aircraft or a total loss of pitch control.
David Villiers
Delegate of the Civil Aviation Safety Authority 6 November 2003
The above AD is notified in the Commonwealth of Australia Gazette on 12 November 2003.
Overview
The Airworthiness Directive (AD) issued under the Civil Aviation Act 1988, specifically through subregulation 39.1 (1) of the Civil Aviation Safety Regulations 1998 (CASR), aims to ensure the ongoing airworthiness of aircraft by mandating specific corrective actions to address identified safety issues. This AD, numbered AD/BEECH 1900/41, was introduced on 12 November 2003 to address inaccuracies in the maintenance manual of Beechcraft 1900 Series Aeroplanes, including the Models 1900, 1900C, and 1900D. The directive was issued in response to discrepancies in the elevator trim system's maintenance procedures, which could potentially lead to control difficulties or loss of pitch control during flight. The policy objective is to prevent unsafe conditions by ensuring that maintenance manuals contain accurate information and that operational checks are performed correctly.
Scope and Application
The Airworthiness Directive (AD) F2006B03660 issued under the Civil Aviation Safety Regulations 1998 applies to all models of Beechcraft 1900, 1900C, and 1900D aircraft. The AD mandates specific corrective actions regarding the elevator trim system to rectify an unsafe condition identified in the maintenance procedures. These actions include marking and inserting corrected figures into the relevant maintenance manuals, incorporating temporary revisions, and performing an elevator trim operational check. The directive is applicable nationally across the Commonwealth of Australia, ensuring that the required modifications are implemented before further maintenance or flight operations involving the elevator trim system are conducted. This directive is effective from 12 November 2003, and its compliance is monitored by the Civil Aviation Safety Authority (CASA). The AD does not explicitly state exclusions or exemptions, implying that all specified aircraft must adhere to the requirements outlined.
Key Provisions
The Airworthiness Directive (AD/BEECH 1900/41) issued by the Civil Aviation Safety Authority (CASA) under subregulation 39.1(1) of the Civil Aviation Safety Regulations 1998, applies to all Beechcraft 1900 Series Aeroplanes, specifically Models 1900, 1900C, and 1900D. This AD mandates specific actions to address an identified unsafe condition with the elevator trim system of these aircraft. The directive outlines three main requirements (Section 1) that must be adhered to by the operators and maintainers of these aircraft models.
The first requirement (Section 1(a)) necessitates the correction of an error in the maintenance manual. Specifically, the incorrect figure for the elevator trim drum must be marked with a pen and replaced with the correct figure provided in the AD. This involves inserting the corrected figure into the manual and noting the correct application of the figure. The second requirement (Section 1(b)) involves incorporating a temporary revision into the maintenance manuals, which includes a revised elevator trim operational check procedure for the Model 1900/1900C Airliner Maintenance Manual and an added manual elevator trim operational check for the Model 1900D Airliner Maintenance Manual. The final requirement (Section 1(c)) demands that the elevator trim operational check specified in the maintenance manual and its temporary revisions be performed.
The AD imposes clear obligations on the aircraft operators and maintainers. They must ensure that the specified corrections to the maintenance manuals are made and that the temporary revisions are incorporated into their manuals. Furthermore, they must complete the elevator trim operational check before further maintenance or flight of the aircraft is undertaken. These actions are critical to ensuring the safe operation of the elevator trim system and preventing potential control issues.
Failure to comply with the provisions of this AD may result in significant consequences. While the AD does not explicitly state penalties for non-compliance, CASA has the authority to enforce compliance under the Civil Aviation Safety Regulations 1998. Non-compliance could potentially lead to enforcement actions, including fines and other penalties, as well as the grounding of the affected aircraft until the required actions are completed. The AD becomes effective on 12 November 2003, and all specified actions must be completed before further maintenance or flight.