AD 88-11-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Saab AB, Saab Aerosystems | 340A (SAAB SF340A) | Airworthiness Directives; SAAB-FAIRCHILD Model SF-340 Series Airplanes |
Unsafe Condition
Electromagnetic interference with navigation and other systems, and loss of the wheel brake system.
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Required Actions
Incorporate the following into the limitations section of the airplane flight manual within 5 days: For unmodified fluorescent lighting inverters, deactivate cabin lights and open circuit breakers F24 and F25, and ensure at least one reading light per row is on. For modified inverters, inspect fluorescent lamps before first flight daily; replace unlit lamps or deactivate their circuits. Modify fluorescent lighting inverters per SB SF340-33-021 or install Modification 1422 to terminate paragraph A.1 requirements. Alternate compliance may be approved by the FAA Manager, Standardization Branch.
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Compliance Time
Within 5 days following the effective date of this AD
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Affected Aircraft
SAAB-FAIRCHILD Model SF-340 series airplanes listed in SAAB-SCANIA Service Bulletin SF340-33-016, Revision 1, dated April 3, 1987, certificated in any category.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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