Commonwealth legislation

AD/BO 105/11 Amdt 1 - Tail Rotor Transmission

RepealedCTH

This Act has been repealed and is no longer in force. It is retained for historical reference.

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

2/10 complexity

This directive requires owners/operators of Eurocopter BO 105 helicopters fitted with tail rotor transmission P/N 4619003003 (specified serial numbers) to follow the inspection and maintenance steps in MBB Alert Service Bulletin ASB-BO 105-30-101 Rev. 1 to prevent tail rotor gearbox mounting-bracket distortion and cracking from a manufacturing projection.

Compliance is required within 50 flight hours after 30 Oct 1987 and whenever an affected transmission is installed; this amendment widens the list of affected serial numbers.

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AD/BO 105/11 Amdt 1 - Tail Rotor Transmission

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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 Eurocopter BO 105 Series Helicopters

AD/BO 105/11

Amdt 1

Tail Rotor Transmission 13/87 DM

Applicability: All model BO 105 helicopters fitted with tail rotor transmission P/N 4619003003 and with S/No as listed in Requirement document.

Requirement: Action in accordance with MBB Alert Service Bulletin No ASB-BO 105-30-101 Rev 1.

Compliance: Within 50 hours time in service after 30 October 1987 and upon installation of affected transmissions on an aircraft after 30 October 1987.

Background: The tail rotor gearbox mounting bracket may be distorted by a raised projection on the transmission housing which may lead to cracking of the transmission mount.

Revision 1 to the SB increases the applicable S/N range.

Source text

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