1AD/DHA-3/5 - Windscreen Wiper - Modification

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COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY

SCHEDULE OF AIRWORTHINESS DIRECTIVES

 

Image unavailable in extracted text DHA-3 (Drover) Series Aeroplanes

 

AD/DHA-3/5 Windscreen Wiper - Modification 12/52

Applicability: All models fitted with vacuum operated windscreen wiper DH Part No. S3-533A. Requirement:               1. Modify the windscreen wiper installation to provide a minimum blade pressure of

28 ounces against the windscreen (measured at the blade attachment point) and

minimum operating rate of 200 strokes per minute.

 

2.    Alternatively to paragraph 2.1, replace the installation with a De Havilland P/N S3-547A, electrically-operated type, or any other wiper installation approved by the Secretary; or

 

3.    DH TNS CT(A3) No. 46; or 4. ANO 105.1.14.14.5.6.

Compliance: Forthwith.