Commonwealth legislation

AD/BEECH 1900/41 - Elevator Trim System

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Commonwealth

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legislative instrument

Plain English Summary

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This Airworthiness Directive requires operators of Beechcraft 1900, 1900C and 1900D aeroplanes to correct a mis‑depicted elevator trim drum in their maintenance manuals, insert the corrected figure, incorporate temporary revisions from Raytheon Safety Communique No. 234, and perform an elevator‑trim operational check (Requirements 1–3). The CASA delegate issued the mandatory directive under CASR subreg 39.1(1) to address an unsafe condition. Operators bear the labour and downtime costs; the actions change maintenance documentation and routine checks.

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AIRWORTHINESS DIRECTIVE

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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.

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Beechcraft 1900 Series Aeroplanes

AD/BEECH 1900/41 Elevator Trim System 13

AD/BEECH 1900/41 Elevator Trim System 13/2003

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.

Source text

Sourced from the Federal Register of Legislation (legislation.gov.au), CC BY 4.0.

AIRWORTHINESS DIRECTIVE AIRWORTHINESS DIRECTIVE

AIRWORTHINESS DIRECTIVE

Beechcraft 1900 Series Aeroplanes

AD/BEECH 1900/41 Elevator Trim System 13 AD/BEECH 1900/41 Elevator Trim System 13/2003

AD/BEECH 1900/41 Elevator Trim System 13/2003

Applicability: All Models 1900, 1900C, and 1900D aircraft.

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.