1AD/TB20/36 - Propeller Governor Control

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

SCHEDULE OF AIRWORTHINESS DIRECTIVES

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Aerospatiale (Socata) TB20 (Trinidad) Series Aeroplanes

AD/TB20/36 Propeller Governor Control 13/99

Applicability: TB20 aircraft, S/Nos. 1899, 1904 through 1909, TB21 aircraft, S/No 1911, and all TB20 and TB21 aircraft fitted with a propeller governor control delivered by SOCATA between 22 March 1999 and 31 August 1999.

Requirement: Replace affected propeller governor controls in accordance with SOCATA mandatory Service Bulletin No. SB 10-112-61 dated August 1999.

Note: DGAC AD 1999-386(A) also refers.

Compliance: No later than 31 January 2000.

This Airworthiness Directive becomes effective on 30 December 1999.

Background: This directive is prompted by advice that faulty propeller governor controls have been released to the field. Failure of a non conforming control will lead to jamming of the propeller governor.