Commonwealth legislation

AD/STORCH/1 - Elevator Trim Tab Mass Balance

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legislative instrument

Plain English Summary

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Elevator Trim Tab Mass Balance AD (AD/STORCH/1) — This directive requires owners/operators of all Slepcev SS‑MK4 aircraft to remove fabric around the elevator trim‑tab mass‑balance arm, inspect the attachment for cracking (dye penetrant or microscope) and re‑weld if cracks are found. Initial inspection and any repair must be done before further flight, with repeat inspections every 200 flight hours; owners/operators bear inspection and repair costs and the CASA delegate issued the directive.

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Current sections

Direct links to the current provisions in AD/STORCH/1 - Elevator Trim Tab Mass Balance.

Storch Aviation Slepcev Storch SS4 Serie

Storch Aviation Slepcev Storch SS4 Series Aeroplanes

AD/STORCH/1	Elevator Trim Tab Mass Balance	11/2006 DM

Applicability:	All Slepcev SS-MK4 aircraft.
Requirement:	Remove the fabric from around the elevator trim tab mass balance arm. Inspect, using dye penetrant or a microscope, the mass balance attachment to detect any signs of cracking.If any cracking is detected, the attachment of the mass balance is to be repaired by re-welding.
Compliance:	The initial inspection and, if necessary, repair must be performed before further flight. Subsequent inspections must be performed at 200 hourly intervals.
	This Airworthiness Directive becomes effective on 20 September 2006.
Background:	There have been two reported instances of cracking of the trim tab mass balance. In one instance the mass balance broke off after cracking progressed through the attachment weld and through the aluminium bracket.

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Greg Vaughan
Delegate of the Civil Aviation Safety Authority

15 September 2006

AD/STORCH/1

Elevator Trim Tab Mass Balance

11/2006 DM

Source text

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

Storch Aviation Slepcev Storch SS4 Serie Storch Aviation Slepcev Storch SS4 Series Aeroplanes

Storch Aviation Slepcev Storch SS4 Series Aeroplanes

AD/STORCH/1	Elevator Trim Tab Mass Balance	11/2006 DM

Applicability:	All Slepcev SS-MK4 aircraft.
Requirement:	Remove the fabric from around the elevator trim tab mass balance arm. Inspect, using dye penetrant or a microscope, the mass balance attachment to detect any signs of cracking.If any cracking is detected, the attachment of the mass balance is to be repaired by re-welding.
Compliance:	The initial inspection and, if necessary, repair must be performed before further flight. Subsequent inspections must be performed at 200 hourly intervals.
	This Airworthiness Directive becomes effective on 20 September 2006.
Background:	There have been two reported instances of cracking of the trim tab mass balance. In one instance the mass balance broke off after cracking progressed through the attachment weld and through the aluminium bracket.

AD/STORCH/1 - Elevator Trim Tab Mass Balance

Plain English Summary

Deep dive

Current sections

Storch Aviation Slepcev Storch SS4 Series Aeroplanes

Storch Aviation Slepcev Storch SS4 Series Aeroplanes

AD/STORCH/1

AD/STORCH/1

Elevator Trim Tab Mass Balance

Elevator Trim Tab Mass Balance

11/2006 DM

11/2006 DM

Source text

Storch Aviation Slepcev Storch SS4 Serie Storch Aviation Slepcev Storch SS4 Series Aeroplanes

Storch Aviation Slepcev Storch SS4 Series Aeroplanes

AD/STORCH/1 AD/STORCH/1

AD/STORCH/1

Elevator Trim Tab Mass Balance Elevator Trim Tab Mass Balance

Elevator Trim Tab Mass Balance

11/2006 DM 11/2006 DM

11/2006 DM