What this page is: a restatement of what the official Federal Register
and manufacturer records show as of the date listed below each item. It is not
a determination that any specific aircraft or engine is, or is not, in compliance.
Under 14 CFR §91.403 and §91.417, the aircraft owner/operator is responsible
for maintaining airworthiness and required records. Always verify against the official FAA
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Airworthiness Directives
2 records
AD
98-05-15
FR doc 98-5475 · 63 FR 10523
AD 98-05-15Published 1998-03-04Effective 1998-04-30
SIAI Marchetti, S.r.1 Models SF600 and SF600A Airplanes
Requires revising the FAA-approved Airplane Flight Manual (AFM) to specify procedures that would prohibit flight in severe icing conditions (as determined by certain visual cues), limit or prohibit the use of various flight…
Full official abstract
Airworthiness Directives; SIAI Marchetti, S.r.1 Models SF600 and SF600A Airplanes
This amendment adopts a new airworthiness directive (AD) that applies to SIAI Marchetti, S.r.1 Models SF600 and SF600A airplanes. This action requires revising the FAA-approved Airplane Flight Manual (AFM) to specify procedures that would prohibit flight in severe icing conditions (as determined by certain visual cues), limit or prohibit the use of various flight control devices while in severe icing conditions, and provide the flight crew with recognition cues for, and procedures for exiting from, severe icing conditions. This AD is prompted by the results of a review of the requirements for certification of these airplanes in icing conditions, new information on the icing environment, and icing data provided currently to the flight crew. The actions specified by this AD are intended to minimize the potential hazards associated with operating these airplanes in severe icing conditions by providing more clearly defined procedures and limitations associated with such conditions.
Source: Federal Register document 98-5475, retrieved 2026-08-17 · re-verified against the live Federal Register API 2026-08-17
AD 97-22-12Published 1997-10-29Effective 1997-12-05
SIAI Marchetti S.r.1. Models SF600 and SF600A Airplanes
Requires amending the Limitations Section of the airplane flight manual (AFM) to prohibit the positioning of the power levers below the flight idle stop while the airplane is in flight.
Full official abstract
Airworthiness Directives; SIAI Marchetti S.r.1. Models SF600 and SF600A Airplanes
This amendment adopts a new airworthiness directive (AD) that applies to all SIAI Marchetti S.r.1. Models SF600 and SF600A airplanes. This AD requires amending the Limitations Section of the airplane flight manual (AFM) to prohibit the positioning of the power levers below the flight idle stop while the airplane is in flight. This AFM amendment will include a statement of consequences if the limitation is not followed. This AD results from numerous incidents and five documented accidents involving airplanes equipped with turboprop engines where the propeller beta was improperly utilized during flight. The actions specified by this AD are intended to prevent loss of airplane control or engine overspeed with consequent loss of engine power caused by the power levers being positioned below the flight idle stop while the airplane is in flight.
Source: Federal Register document 97-28577, retrieved 2026-08-17 · re-verified against the live Federal Register API 2026-08-17
