AD 89-07-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Saab AB, Saab Aerosystems | 340A (SAAB SF340A) | Airworthiness Directives; SAAB-SCANIA Model SF-340A Series Airplanes |
Unsafe Condition
Arcing in the fuel tanks due to lightning strikes could occur if jumper assemblies are not fitted to the midlevel and tank full optical sensors.
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Required Actions
Within 30 days after the effective date, inspect to determine if jumper assemblies are fitted to the midlevel and tank full optical sensors per SAAB Service Bulletin SF340-28-006. If not installed, prior to further flight, install jumper assemblies and check resistance per the same service bulletin. Alternate compliance may be approved by the Manager, Standardization Branch, ANM-113.
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Compliance Time
Within 30 days after the effective date of this AD, and prior to further flight if jumper assemblies are not installed.
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Affected Aircraft
Saab AB, Saab Aerosystems Model SF-340A series airplanes, serial numbers 003 through 106, except those equipped with mechanical float switches.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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