Commonwealth legislation

AD/A320/170 - Fire Protection - Cargo Compartment Water Drain Valves

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legislative instrument

Plain English Summary

3/10 complexity

Requires operators of specified Airbus A318/A319/A320/A321 aeroplanes to modify the forward and aft cargo compartment water drain valves using Airbus Service Bulletin A320‑52‑1124. The regulator mandates completion within four months of the directive’s effective date. This targets valve leaks identified in a flight test that reduced halon fire‑extinguishing concentration; the rule applies only to aircraft listed in the Applicability (excluding those already modified by mod 33232), imposing a compliance cost and short work window on affected operators.

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Current sections

Direct links to the current provisions in AD/A320/170 - Fire Protection - Cargo Compartment Water Drain Valves.

Airbus Industrie A319, A320 and A321 Ser

Airbus Industrie A319, A320 and A321 Series Aeroplanes

AD/A320/170	Fire Protection - Cargo CompartmentWater Drain Valves	4/2005

Applicability:	AIRBUS:- A318 aircraft all certified models and all serial numbers; and- A319 aircraft, all certified models and all serial numbers that have incorporated AIRBUS modification 25642 or 26213 in production or AIRBUS Service Bulletin (SB) A320-52-1088 in service; and- A320 and A321 aircraft, all certified models and all serial numbers that have incorporated AIRBUS modification 26213 or 26603 in production or SB A320-52-1088 in service.Except any aircraft that have incorporated AIRBUS modification 33232 in production or SB A320-52-1124 in service.
Requirement:	Modify the forward and aft cargo water drain valves in accordance with AIRBUS Service Bulletin A320-52-1124.Note: DGAC AD F-2004-172 EASA Approval No. 2004-10569 dated 20 October 2004 refers.
Compliance:	Unless previously completed within 4 months from the effective date of this Directive.
	This Airworthiness Directive becomes effective on 14 April 2005.
Background:	A fire containment capability evaluation of the cargo compartment has been performed during a flight test on an A319. The level of the halon extinguishant decreased below the required concentration. This was due to a too high rate of air renewal in the compartment.After investigation two leak sources were identified:- the first leak is generated by the forward and aft cargo door water drain valves,- the second leak is generated by the aft cargo compartment temperature sensor installation; which is covered by another Airworthiness Directive.

	This Directive renders mandatory the modification of the forward and aft cargo door water drain valves.

View image in the official source
James Coyne
Delegate of the Civil Aviation Safety Authority

3 March 2005

AD/A320/170

Fire Protection - Cargo CompartmentWater

Fire Protection - Cargo CompartmentWater Drain Valves

Fire Protection - Cargo Compartment

Water Drain Valves

4/2005

Source text

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

Airbus Industrie A319, A320 and A321 Ser Airbus Industrie A319, A320 and A321 Series Aeroplanes

Airbus Industrie A319, A320 and A321 Series Aeroplanes

AD/A320/170	Fire Protection - Cargo CompartmentWater Drain Valves	4/2005

Applicability:	AIRBUS:- A318 aircraft all certified models and all serial numbers; and- A319 aircraft, all certified models and all serial numbers that have incorporated AIRBUS modification 25642 or 26213 in production or AIRBUS Service Bulletin (SB) A320-52-1088 in service; and- A320 and A321 aircraft, all certified models and all serial numbers that have incorporated AIRBUS modification 26213 or 26603 in production or SB A320-52-1088 in service.Except any aircraft that have incorporated AIRBUS modification 33232 in production or SB A320-52-1124 in service.
Requirement:	Modify the forward and aft cargo water drain valves in accordance with AIRBUS Service Bulletin A320-52-1124.Note: DGAC AD F-2004-172 EASA Approval No. 2004-10569 dated 20 October 2004 refers.
Compliance:	Unless previously completed within 4 months from the effective date of this Directive.
	This Airworthiness Directive becomes effective on 14 April 2005.
Background:	A fire containment capability evaluation of the cargo compartment has been performed during a flight test on an A319. The level of the halon extinguishant decreased below the required concentration. This was due to a too high rate of air renewal in the compartment.After investigation two leak sources were identified:- the first leak is generated by the forward and aft cargo door water drain valves,- the second leak is generated by the aft cargo compartment temperature sensor installation; which is covered by another Airworthiness Directive.

	This Directive renders mandatory the modification of the forward and aft cargo door water drain valves.

James Coyne
Delegate of the Civil Aviation Safety Authority

3 March 2005

AD/A320/170 - Fire Protection - Cargo Compartment Water Drain Valves

Plain English Summary

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Current sections

Airbus Industrie A319, A320 and A321 Series Aeroplanes

Airbus Industrie A319, A320 and A321 Series Aeroplanes

AD/A320/170

AD/A320/170

Fire Protection - Cargo CompartmentWater Drain Valves

Fire Protection - Cargo Compartment

4/2005

4/2005

Source text

Airbus Industrie A319, A320 and A321 Ser Airbus Industrie A319, A320 and A321 Series Aeroplanes

Airbus Industrie A319, A320 and A321 Series Aeroplanes

AD/A320/170 AD/A320/170

AD/A320/170

Fire Protection - Cargo CompartmentWater Fire Protection - Cargo CompartmentWater Drain Valves

Fire Protection - Cargo Compartment

4/2005 4/2005

4/2005