Commonwealth legislation

AD/GROB 115/10 - Main Landing Gear Axle

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Commonwealth

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legislative instrument

Plain English Summary

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This Airworthiness Directive for Grob G115 and G115A aeroplanes requires dye‑penetrant inspection of both main landing‑gear axles, replacement of any cracked axle, and modification of the axle assemblies per Grob Service Bulletin SB 1078‑12/1 to prevent cracking. Owners/operators must perform the initial inspection within 20 hours time in service after 18 June 1998, repeat inspections after heavy landings or every 500 landings until modification, and complete the modification or replace cracked axles by 31 December 1998. Operators bear the inspection, repair and modification costs.

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AD/GROB 115/10 - Main Landing Gear Axle

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

SCHEDULE OF AIRWORTHINESS DIRECTIVES

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Grob G115 Series Aeroplanes

AD/GROB 115/10 Main Landing Gear Axle 7/98

Applicability: Model G115 and G115A, all serial numbers.

Requirement: 1. Inspect, using dye penetrant method, the left and right main landing gear axles in accordance with Grob Service Bulletin (SB)1078-12/1. Replace any axle found cracked during inspection.

Modify the left and right main landing gear axle assemblies in accordance with the Installation Instructions of Grob SB 1078-12/1.

Note: LBA AD 90-185/2 refers.

Compliance: For Requirement 1: Unless already accomplished, inspect within 20 hours time in service after 18 June 1998. Thereafter inspect before further flight in the event of a heavy landing, or at intervals not to exceed 500 landings, whichever occurs first, until compliance with Requirement 2 of this Directive.

For Requirement 2: Unless already accomplished, modify before further flight if found cracked or before 31 December 1998, whichever occurs later.

This airworthiness directive becomes effective on 18 June 1998.

Background: Several aircraft have been found with cracks in the main landing gear axle, as a result of inspection in accordance with SB 1078-12/1. This directive requires inspection of the main landing gear axle for cracks, replacement of the axle if cracked and modification of the axle assembly to prevent cracks.

Source text

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

1 AD/GROB 115/10 - Main Landing Gear Axle