AD/R44/25 - Main Rotor Blades

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On the effective date specified below, and for the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (AD) under subregulation 39.001 (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 an 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.
Robinson Helicopter Company R44 Series Helicopters
Main Rotor Blades
All Robinson R44 series helicopters equipped with main rotor blades P/N C016-7.

1.    Conduct a detailed visual inspection of the trailing edge of the main rotor blade in accordance with Robinson Safety Alert issued 23 February 2015.
2.    Remove from service and quarantine any main rotor blade which fails the inspection. Report any blade damage to CASA via the SDR system.

1.    Before every flight.
2.    Upon discovery of any blade damage.

The effective date of this AD is the day of registration.

The requirements of this AD are be accomplished by adding the inspection requirement to the aircraft maintenance records and certifying for the inspection before each flight. The visual inspection may be performed and certified by the holder of a current pilot licence, if that person is rated on the aircraft, appropriately trained by a LAME and authorised by CASA under Instrument CASA 67/13.
This Airworthiness Directive is issued to prevent the possibility of main rotor blade separation and consequent loss of the helicopter.

Nicholas Ward
Delegate of the Civil Aviation Safety Authority
24 February 2015
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