Commonwealth legislation

AD/DHC-8/11 Amdt 2 - Engine Cowl Door Retention and Pressure Relief

In ForceCTH

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

3/10 complexity

This Airworthiness Directive requires operators of Bombardier DHC-8 Model 100 series aircraft (serial numbers 3–193) to modify both engine cowlings to improve cowl-door retention and pressure relief, following Bombardier Service Bulletin 8-71-13 (Requirement). Compliance is mandatory within 30 days of the AD’s commencement (3 November 2017); previous compliance under AD/DHC-8/11 Amdt 1 is accepted. The rule places the cost and work on aircraft operators and their maintenance providers and requires them to use the most recent SB revision (Requirement, Compliance).

JSON API

Deep dive

Want the full deep dive?

Zoe can write the in-depth analysis on top of the summary above: how it works, who it affects and what each part actually does.

Current sections

Direct links to the current provisions in AD/DHC-8/11 Amdt 2 - Engine Cowl Door Retention and Pressure Relief.

Bombardier DHC-8 Series Aeroplanes

AD/DHC-8/11 Amdt 2	Engine Cowl Door Retentionand Pressure Relief	21/2017

Applicability:	Bombardier DHC-8 Model 100 series, serial numbers 3 through 193.
Requirement:	Modify both engine cowlings in accordance with Bombardier Service Bulletin (SB) 8-71-13, as in force from time to time.Note 1: Canadian AD CF-89-15R1 refers.Note 2: The words “as in force from time to time” require compliance with the most recent version of the SB.
Compliance:	Within 30 days after the commencement date of this AD, unless previously accomplished.Note 3: Previous compliance with the requirement in AD/DHC-8/11 Amdt 1 constitutes compliance with the requirement in this AD.
	This AD commences on 3 November 2017.
Background:	There have been instances of loss of engine cowl doors during engine fires. That door loss has rendered the fire extinguishing system ineffective.Amendment 1 of this AD was issued to reflect Revision C of the Requirement Document (Bombardier SB 8-71-13).Amendment 2 is issued to align the AD applicability with that of the Canadian AD and to reference the latest revision of the Canadian AD.

View image in the official source

Ben Wilson
Delegate of the Civil Aviation Safety Authority

18 October 2017

AD/DHC-8/11 Amdt 2

Engine Cowl Door Retentionand Pressure R

Engine Cowl Door Retentionand Pressure Relief

Engine Cowl Door Retention

and Pressure Relief

21/2017

Source text

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

Bombardier DHC-8 Series Aeroplanes Bombardier DHC-8 Series Aeroplanes

Bombardier DHC-8 Series Aeroplanes

AD/DHC-8/11 Amdt 2	Engine Cowl Door Retentionand Pressure Relief	21/2017

Applicability:	Bombardier DHC-8 Model 100 series, serial numbers 3 through 193.
Requirement:	Modify both engine cowlings in accordance with Bombardier Service Bulletin (SB) 8-71-13, as in force from time to time.Note 1: Canadian AD CF-89-15R1 refers.Note 2: The words “as in force from time to time” require compliance with the most recent version of the SB.
Compliance:	Within 30 days after the commencement date of this AD, unless previously accomplished.Note 3: Previous compliance with the requirement in AD/DHC-8/11 Amdt 1 constitutes compliance with the requirement in this AD.
	This AD commences on 3 November 2017.
Background:	There have been instances of loss of engine cowl doors during engine fires. That door loss has rendered the fire extinguishing system ineffective.Amendment 1 of this AD was issued to reflect Revision C of the Requirement Document (Bombardier SB 8-71-13).Amendment 2 is issued to align the AD applicability with that of the Canadian AD and to reference the latest revision of the Canadian AD.

Ben Wilson
Delegate of the Civil Aviation Safety Authority

18 October 2017

AD/DHC-8/11 Amdt 2 AD/DHC-8/11 Amdt 2

AD/DHC-8/11 Amdt 2

Engine Cowl Door Retentionand Pressure R Engine Cowl Door Retentionand Pressure Relief

Engine Cowl Door Retention

and Pressure Relief

Deep dive

Current sections

Bombardier DHC-8 Series Aeroplanes

Bombardier DHC-8 Series Aeroplanes

AD/DHC-8/11 Amdt 2

AD/DHC-8/11 Amdt 2

Engine Cowl Door Retentionand Pressure Relief

Engine Cowl Door Retention

21/2017

21/2017

Source text

Bombardier DHC-8 Series Aeroplanes Bombardier DHC-8 Series Aeroplanes

Bombardier DHC-8 Series Aeroplanes

AD/DHC-8/11 Amdt 2 AD/DHC-8/11 Amdt 2

AD/DHC-8/11 Amdt 2

Engine Cowl Door Retentionand Pressure R Engine Cowl Door Retentionand Pressure Relief

Engine Cowl Door Retention

21/2017 21/2017

21/2017