Commonwealth legislation

AD/HS 748/17 - Engine Subframe Eye Bolt

In ForceCTH

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Commonwealth

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legislative instrument

Plain English Summary

3/10 complexity

The directive requires every HS 748 to have the engine subframe eye bolt installation inspected on both left and right “Y” plates and any deficiencies corrected per British Aerospace MSB 54/31. Inspections must be done by 11 May 1995 and repairs completed within 60 days of inspection. It affects HS 748 owners/operators, who bear costs and downtime; it was issued after an in‑service eye bolt failure revealed improper bedding.

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AD/HS 748/17 - Engine Subframe Eye Bolt

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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 British Aerospace (Hawker Siddeley) HS 748 Series Aeroplanes

AD/HS 748/17 Engine Subframe Eye Bolt 5/95

Applicability: All HS748 Aircraft.

Requirement: 1. On both left and right engine subframe assemblies inspect the installation of the eye bolt (P/N 14b.0.3975) into the “Y” plate (P/N 14a.0.3975) in accordance with British Aerospace Mandatory Service Bulletin (MSB) 54/31.

Rectify any deficient eye bolt installations in accordance with British Aerospace MSB 54/31.

Note: CAA (UK) AD 009-08-88 refers.

Compliance: 1. Inspect before 11 May 1995.

Rectify, if required, within 60 days of the Requirement 1 inspection.

Background: An in-service failure of an eye bolt revealed the possibility of incorrect bedding of the eye bolt head to the sub-frame “Y” plate.

Source text

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