Commonwealth legislation

AD/SWSA226/70 - Horizontal Stabiliser - Aft Spar Attach Fitting

In ForceCTH

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

3/10 complexity

Requires modification of the horizontal stabiliser aft-spar attach fitting and the stabiliser upper/lower skins, and routine visual inspections for cracks in the rib splice strap on specified Fairchild SA226 and SA227 models. The AD says the change will improve durability after reported cracking. Owners/operators must arrange, pay for and complete the modification and initial inspection within the flight‑hour deadlines and carry out recurring inspections, creating a measurable maintenance, cost and downtime obligation.

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Current sections

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AD/SWSA226/70 - Horizontal Stabiliser - Aft Spar Attach Fitting

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

SCHEDULE OF AIRWORTHINESS DIRECTIVES

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Fairchild (Swearingen) SA226 and SA227 Series Aeroplanes

AD/SWSA226/70 Horizontal Stabiliser - Aft Spar Attach Fitting 5/95

Applicability: Models SA226-T, SA226-T(B), SA226-AT and SA226-TC listed in Fairchild Service Bulletin 226-55-010, Revised December 13 1991.

Models SA227-TT, SA227-AT, SA227-AC and SA227-BC listed in Fairchild Service Bulletin 227-55-006, Revised January 20 1993.

Requirement: 1. Modify the horizontal stabiliser aft spar attach fitting installation and the horizontal stabiliser upper and lower skins in accordance with the Accomplishment Instructions section of Fairchild Service Bulletin (SB) 226-55-010, Revised December 13 1991 or Fairchild SB 227-55-006, Revised January 20 1993, as applicable.

Visually inspect the radius area of the rib splice strap for cracks in accordance with Figure 2 of Fairchild SB 226-55-010, Revised December 13 1991 or Figure 3 of Fairchild SB 227-55-006, Revised January 20 1993, as applicable.

Note: FAA AD 93-15-01 refers.

Compliance: 1. Modify in accordance with Requirement 1 before 10000 hours time in service or within 1000 hours time in service after 27 April 1995, whichever occurs later.

Initially inspect in accordance with Requirement 2 before 10000 hours time in service or within 1000 hours time in service after 27 April 1995, whichever occurs later. Re-inspect at intervals not to exceed 5000 hours time in service.

Background: Cracks have been reported in rib splice straps. The modification will improve stabiliser aft spar attach fitting durability.

Source text

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

1 AD/SWSA226/70 - Horizontal Stabiliser - Aft Spar Attach Fitting