Commonwealth legislation

AD/PHZL/65 - Hub Pilot Tube Bore Inspection

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Jurisdiction

Commonwealth

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legislative instrument

Plain English Summary

3/10 complexity

This directive requires inspection of the hub pilot tube bores on HC‑B4 series Hartzell four‑bladed propellers that may have previously been installed on Mitsubishi MU‑2 aircraft, to be done in accordance with Hartzell Alert Service Bulletin A186. Hubs already checked under AD/PHZL/64 are exempt. Operators and maintenance organisations pay for inspections and any repairs; the Civil Aviation Safety Authority enforces compliance. The inspection is intended to detect fatigue cracking caused by higher MU‑2 operating stresses and may lead to repair or replacement.

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Current sections

Direct links to the current provisions in AD/PHZL/65 - Hub Pilot Tube Bore Inspection.

AD/PHZL/65 - Hub Pilot Tube Bore Inspection

COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 107 CIVIL AVIATION SAFETY AUTHORITY

SCHEDULE OF AIRWORTHINESS DIRECTIVES

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Propellers - Variable Pitch - Hartzell

AD/PHZL/65 Hub Pilot Tube Bore Inspection 5/94

Applicability: All HC-B4 series propellers which may have been previously installed on MU-2 series aircraft and have not had the hub bores inspected in accordance with Hartzell Alert SB A182 or A183.

Note 1: Subject propellers are installed on but not limited to Beech F90 King Air, A100 and A100A King Air, B100 King Air, CASA C-212-CB, CASA C-212-CC, CF,

DeHaviland Heron - Saunders Conversion ST-27B, Dornier Do 228-100, -101, -200,

-201, -202 and -212, Embraer EMB-121A1 Xingu, Fairchild SA226-TB Merlin IIIB, Let L-410A and Shorts SC-7 series 3, variant 200.

Note 2: Hubs previously inspected in accordance with AD/PHZL/64 are exempt from the requirements of this Directive.

Requirement: Action in accordance with Hartzell Alert SB A186 dated 25 January 1994.

Note: FAA AD 94-03-11 amdt 39-8818 refers.

Compliance: As specified in the requirement document.

Background: The propeller manufacturer has expressed concern that a large number of 4 bladed hubs originally supplied to Mitsubishi may have seen service on MU-2 series aircraft and due to the higher operating stresses when fitted to these aircraft the hub pilot tube bores require inspection for signs of fatigue cracking.

Source text

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

1 AD/PHZL/65 - Hub Pilot Tube Bore Inspection