Commonwealth legislation

AD/AC-112/6 Amdt 4 - Front Seat and Shoulder Harness

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Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

4/10 complexity

This airworthiness directive orders owners/operators of specified Gulfstream (Rockwell) 112-series aeroplanes (listed serial numbers) to modify front seats and shoulder-belt attachments using either Rockwell SB-112-45A or Gulfstream SB-112-70A Rev 1. It must be done within 100 hours’ time in service after 30 June 1987 and no later than 30 June 1988. The Gulfstream procedure increases the safety margin after survivable accidents showed fuselage-deflection risks; the Rockwell procedure meets the minimum regulatory standard.

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AD/AC-112/6 Amdt 4 - Front Seat and Shoulder Harness

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

SCHEDULE OF AIRWORTHINESS DIRECTIVES

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Gulfstream (Rockwell) 112 Series Aeroplanes

AD/AC-112/6

Amdt 4

Front Seat and Shoulder Harness 7/87

Applicability: All models 112 and 112B with S/Nos 3 to 544 and 13000, Models 112TC and 112TCA with S/Nos 13001 to 13309.

Requirement: Unless already accomplished modify the front seats and belt attachments in accordance with either.

Rockwell Service Bulletin SB-112-45A, or

b. Gulfstream Aerospace SB-112-70A Rev 1.

Compliance: Within 100 hours’ time in service after 30 June 1987 but not later than 30 June 1988.

Background: This Directive is amended to reflect the resolution of the problems affecting earlier issues. It should be noted that whilst the Rockwell Bulletin modifies the aircraft seats and belts to the minimum acceptable standard required by ANO 101.22 there have been accidents overseas which were classified as surviveable, in which the seat occupants were fatally injured. Following those accidents the Gulfstream Bulletin was issued which increased the margin of safety to compensate for the fuselage deflection phenomena of this aircraft design.

Source text

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

1 AD/AC-112/6 Amdt 4 - Front Seat and Shoulder Harness