AD/BELL 412/14 Amdt 1 - Emergency Flotation System and Squib Valve

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

SCHEDULE OF AIRWORTHINESS DIRECTIVES

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Bell Helicopter Textron 412 Series Helicopters

AD/BELL 412/14

Amdt 1

Emergency Flotation System and Squib Valve 5/87

Applicability: All model 412 helicopters S/No 33001 to 33134 fitted with Emergency Flotation Kit P/N 412-706-004-101, -119, -121, -123 and -125.

Requirement: Action in accordance with Bell Alert Service Bulletin No. 412- 87-29 Rev. A.

Compliance: Within 500 hours time in service after 7 May 1987 or before 31 July 1987 whichever occurs first.

Note: Compliance with the previous issue of this Directive does not constitute compliance with this issue.

Background: The failure of an emergency flotation squib valve assembly has shown the possibility of a valve assembly failure during the pressure reservoir discharge. This Directive has been amended to conform with the latest Bell Alert Service Bulletin.