Commonwealth legislation

AD/LEARJET/8 - Main Landing Gear Upper Strut - Inspection

In ForceCTH

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

3/10 complexity

This airworthiness directive requires removal, dismantling, cleaning and fluorescent dye-penetrant inspection of the main landing-gear upper strut on specified Gates Learjet 24 and 25 serial numbers to detect cracks or flaws. If defects are found, operators must evaluate the crack location per Figure 1 of Gates Learjet Service Bulletin No. 23/24/25‑259 and reject or rework the strut as specified. Owners/operators of the listed aircraft pay for inspection and any repairs and must complete the work within 600 hours time in service after 30 April 1975 or 30 September 1976 (whichever is earlier).

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AD/LEARJET/8 - Main Landing Gear Upper Strut - Inspection

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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 Gates Learjet 24 & 25 Series Aeroplanes

AD/LEARJET/8 Main Landing Gear Upper Strut - Inspection 3/75 Applicability: Model 24 with S/Nos. 24-100 to 24-297; and model 25 with S/Nos. 25-003 to 25-182. Requirement: To detect cracks or flaws in the MLG upper strut:-

Remove strut from aeroplane, dismantle, clean and inspect using a Fluorescent Dye Penetrant Technique.

2. If cracks or flaws are disclosed by the inspection in para. 1 evaluate the position of cracks or flaws as per Fig. 1 of Gates Learjet SB No. 23/24/25-259; reject or rework affected upper struts as specified.

Compliance: Within 600 hours time in service after 30 April 1975 or 30 September 1976 whichever occurs first.

Source text

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

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

SCHEDULE OF AIRWORTHINESS DIRECTIVES

Gates Learjet 24 & 25 Series Aeroplanes

Remove strut from aeroplane, dismantle, clean and inspect using a Fluorescent Dye Penetrant Technique.

Compliance: Within 600 hours time in service after 30 April 1975 or 30 September 1976 whichever occurs first.