AD 97-09-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Airbus SAS | A320-111 | Airworthiness Directives; Airbus Industrie Model A320, A321, A330, and A340 Series Airplanes Equipped with Westland-Sitec Fire Shutoff Valves Having Part Number EO3000 |
| aircraft | Airbus SAS | A320-211 | Airworthiness Directives; Airbus Industrie Model A320, A321, A330, and A340 Series Airplanes Equipped with Westland-Sitec Fire Shutoff Valves Having Part Number EO3000 |
| aircraft | Airbus SAS | A320-212 | Airworthiness Directives; Airbus Industrie Model A320, A321, A330, and A340 Series Airplanes Equipped with Westland-Sitec Fire Shutoff Valves Having Part Number EO3000 |
| aircraft | Airbus SAS | A320-214 | Airworthiness Directives; Airbus Industrie Model A320, A321, A330, and A340 Series Airplanes Equipped with Westland-Sitec Fire Shutoff Valves Having Part Number EO3000 |
| aircraft | Airbus SAS | A320-231 | Airworthiness Directives; Airbus Industrie Model A320, A321, A330, and A340 Series Airplanes Equipped with Westland-Sitec Fire Shutoff Valves Having Part Number EO3000 |
| aircraft | Airbus SAS | A320-232 | Airworthiness Directives; Airbus Industrie Model A320, A321, A330, and A340 Series Airplanes Equipped with Westland-Sitec Fire Shutoff Valves Having Part Number EO3000 |
| aircraft | Airbus SAS | A320-233 | Airworthiness Directives; Airbus Industrie Model A320, A321, A330, and A340 Series Airplanes Equipped with Westland-Sitec Fire Shutoff Valves Having Part Number EO3000 |
| aircraft | Airbus SAS | A321-111 | Airworthiness Directives; Airbus Industrie Model A320, A321, A330, and A340 Series Airplanes Equipped with Westland-Sitec Fire Shutoff Valves Having Part Number EO3000 |
| aircraft | Airbus SAS | A321-112 | Airworthiness Directives; Airbus Industrie Model A320, A321, A330, and A340 Series Airplanes Equipped with Westland-Sitec Fire Shutoff Valves Having Part Number EO3000 |
| aircraft | Airbus SAS | A321-131 | Airworthiness Directives; Airbus Industrie Model A320, A321, A330, and A340 Series Airplanes Equipped with Westland-Sitec Fire Shutoff Valves Having Part Number EO3000 |
Unsafe Condition
Fire shutoff valves (FSOV) are not closing completely during maintenance testing, which would fuel the fire and lead to the loss of fluid in associated hydraulic systems, causing those systems to fail.
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Required Actions
Perform a functional/operational test on each FSOV for left/right engines and check FSOV motor operation per Airbus AOT 29-15. If FSOV passes, repeat every 18 months. If failed, replace with modified valves and modify seals/motors as terminating action.
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Compliance Time
Within 6 months after the effective date (May 29, 1997), and thereafter at intervals not to exceed 18 months if passed. Failed FSOVs must be replaced prior to further flight.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Airbus Model A320, A321, A330, and A340 series airplanes equipped with Westland-Sitec FSOVs having part number EO3000.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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