Commonwealth legislation

AD/SA 315/17 - Main Gearbox - Freewheel Coupling Bolts

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legislative instrument

Plain English Summary

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AD/SA 315/17 requires operators of Eurocopter SA315 (Lama) helicopters to perform a torque check on bolts P/N 3130S.62.02.012.1 that secure the freewheel ring gear (P/N 3130S.62.22.050) to the coupling flange (P/N 3160S.62.02.005) on the main gearbox. The check must be done on new or overhauled MGBs after 50 flight hours (effective 7 June 2007) because loose bolts were found. Helicopter owners/operators pay for compliance; licensed maintenance personnel must decide and carry out the check and any corrective work (AD/SA 315/17).

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Direct links to the current provisions in AD/SA 315/17 - Main Gearbox - Freewheel Coupling Bolts.

Eurocopter SA 315 (Lama) Series Helicopt

Eurocopter SA 315 (Lama) Series Helicopters

AD/SA 315/17	Main Gearbox - Freewheel Coupling Bolts	6/2007

Applicability:	Eurocopter SA315 helicopters.
Requirement:	Carry out a torque check of the bolts, Part Number (P/N) 3130S.62.02.012.1 attaching the freewheel ring gear, P/N 3130S.62.22.050, to the coupling flange, P/N 3160S.62.02.005, on the Main Gearbox (MGB).Note: DGAC AD 73-39-5 refers.
Compliance:	On new or overhauled MGB’s after 50 flight hours.
	This Airworthiness Directive becomes effective on 7 June 2007.
Background:	Several cases of loose bolts have been discovered attaching the freewheel ring gear to the coupling flange on the MGB.

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David Punshon
Delegate of the Civil Aviation Safety Authority

26 April 2007

AD/SA 315/17

Main Gearbox - Freewheel Coupling Bolts

6/2007

Source text

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

Eurocopter SA 315 (Lama) Series Helicopt Eurocopter SA 315 (Lama) Series Helicopters

Eurocopter SA 315 (Lama) Series Helicopters

AD/SA 315/17	Main Gearbox - Freewheel Coupling Bolts	6/2007

Applicability:	Eurocopter SA315 helicopters.
Requirement:	Carry out a torque check of the bolts, Part Number (P/N) 3130S.62.02.012.1 attaching the freewheel ring gear, P/N 3130S.62.22.050, to the coupling flange, P/N 3160S.62.02.005, on the Main Gearbox (MGB).Note: DGAC AD 73-39-5 refers.
Compliance:	On new or overhauled MGB’s after 50 flight hours.
	This Airworthiness Directive becomes effective on 7 June 2007.
Background:	Several cases of loose bolts have been discovered attaching the freewheel ring gear to the coupling flange on the MGB.

AD/SA 315/17 - Main Gearbox - Freewheel Coupling Bolts

Plain English Summary

Deep dive

Current sections

Eurocopter SA 315 (Lama) Series Helicopters

Eurocopter SA 315 (Lama) Series Helicopters

AD/SA 315/17

AD/SA 315/17

Main Gearbox - Freewheel Coupling Bolts

Main Gearbox - Freewheel Coupling Bolts

6/2007

6/2007

Source text

Eurocopter SA 315 (Lama) Series Helicopt Eurocopter SA 315 (Lama) Series Helicopters

Eurocopter SA 315 (Lama) Series Helicopters

AD/SA 315/17 AD/SA 315/17

AD/SA 315/17

Main Gearbox - Freewheel Coupling Bolts Main Gearbox - Freewheel Coupling Bolts

Main Gearbox - Freewheel Coupling Bolts

6/2007 6/2007

6/2007