AD 97-07-09
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Airbus | A300 B2-1A | Airworthiness Directives; Airbus Model A300 Series Airplanes |
| aircraft | Airbus | A300 B2-1C | Airworthiness Directives; Airbus Model A300 Series Airplanes |
| aircraft | Airbus | A300 B2-203 | Airworthiness Directives; Airbus Model A300 Series Airplanes |
| aircraft | Airbus | A300 B2K-3C | Airworthiness Directives; Airbus Model A300 Series Airplanes |
| aircraft | Airbus | A300 B4-103 | Airworthiness Directives; Airbus Model A300 Series Airplanes |
| aircraft | Airbus | A300 B4-203 | Airworthiness Directives; Airbus Model A300 Series Airplanes |
| aircraft | Airbus | A300 B4-2C | Airworthiness Directives; Airbus Model A300 Series Airplanes |
Unsafe Condition
Incorrect installation of the isolation valve and crossfeed valve control unit 5QB could cause the flight crew to inadvertently shut off the flow of fuel from wing tank 2A to the number 2 engine, resulting in engine failure during flight.
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Required Actions
Perform initial checks and functional tests of the control knobs within 30 days after the effective date. Repeat checks and tests at intervals not exceeding 500 hours time-in-service or before further flight after maintenance. Replace the control unit and knobs with modified equipment within 2 years to terminate repetitive checks.
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Compliance Time
Within 30 days after the effective date (for initial checks) and within 2 years after the effective date (for replacements). Repetitive checks must be done every 500 hours time-in-service or before further flight after maintenance.
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Affected Aircraft
Airbus Model A300 B2-1A, B2-1C, B2-203, B2K-3C, B4-103, B4-203, B4-2C airplanes, as listed in specified Airbus service documents.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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