Commonwealth legislation

AD/B747/23 - Outboard Engine Strut Diagonal Brace Forward Clevis Root - Inspection and Modification

In ForceCTH

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

3/10 complexity

Operators of Model 747s fitted with CF6, JT9D-3 or JT9D-7 engines must inspect—and, if required, modify—the forward clevis root of the outboard engine strut diagonal brace to detect and correct transverse cracking found overseas.

Compliance must follow the referenced technical authority (FAA AD 80-08-02 or Boeing SB 747-54-2070); operators bear inspection/modification costs and schedule impact.

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AD/B747/23 - Outboard Engine Strut Diagonal Brace Forward Clevis Root - Inspection and Modification

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

SCHEDULE OF AIRWORTHINESS DIRECTIVES

View image in the official source Boeing 747 Series Aeroplanes

AD/B747/23 Outboard Engine Strut Diagonal Brace Forward

Clevis Root - Inspection and Modification

Applicability: All model 747 equipped with CF6, JT9D-3 or JT9D-7 engines. Document: 1. FAA AD 80-08-02, Amdt. 39-3738; or

Boeing SB No. 747-54-2070.

Compliance: As per requirement document No. 1.

7/80

Background: An overseas operator has detected transverse cracks in clevis root of brace. Defect is attributed to local thickness being less than specified.

Source text

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