AD 98-05-15
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Vulcanair S.p.A. | SF600 | Airworthiness Directives; SIAI Marchetti, S.r.1 Models SF600 and SF600A Airplanes. |
| aircraft | Vulcanair S.p.A. | SF600A | Airworthiness Directives; SIAI Marchetti, S.r.1 Models SF600 and SF600A Airplanes. |
Unsafe Condition
Severe icing conditions may result in ice build-up exceeding the ice protection system's capability or ice forming aft of protected surfaces, degrading performance and controllability. Visual cues include extensive ice on airframe/windshield, ice on lower wing aft of protected area, and ice on engine nacelles/propeller spinners farther aft than normal.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Revise the Airplane Flight Manual (AFM) Limitations Section to include severe icing visual cues and procedures, prohibit autopilot use in such conditions, and ensure icing wing inspection lights are operational at night. Revise the Normal Procedures Section to specify weather conditions conducive to severe icing and procedures for exiting icing environments, including requesting priority handling, avoiding abrupt maneuvers, and flap usage restrictions.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 30 days after the effective date of this AD (April 30, 1998).
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Vulcanair S.p.A. Models SF600 and SF600A airplanes.
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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