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Airworthiness Directive 2012-24-06

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Official AD 2012-24-06 · FR doc 2012-29169 · 2012-12-10 · airframe

Airworthiness Directives; Saab AB, Saab Aerosystems Airplanes

What this AD requires

We are adopting a new airworthiness directive (AD) for certain Saab AB, Saab Aerosystems Model 340A (SAAB/SF340A) and SAAB 340B airplanes. This AD was prompted by reports of stall events during icing conditions where the natural stall warning (buffet) was not identified. This AD requires replacing the stall warning computer (SWC) with a new SWC, which provides an artificial stall warning in icing conditions, and modifying the airplane for the replacement of the SWC. We are issuing this AD to prevent natural stall events when operating in icing conditions, which, if not corrected, could result in loss of control of the airplane.

Which aircraft AD 2012-24-06 applies to

MakesSaab
Models340A, SF340A, 340B, 340
Serial-conditional — narrows to serials 004–159, 160–459.

Excludes airplanes with SAAB Modification 2650 and/or 2859 installed. Does not apply to serial numbers 170, 342, 362, 363, 367, 372, 379, 385, 395, 405, 409, 431, and 455. Model 340A (SAAB/SF340A) covers S/N 004-159; Model SAAB 340B covers S/N 160-459.

Whether AD 2012-24-06 actually applies to your aircraft (by serial and installed parts) and whether it’s already complied with comes from that aircraft’s records.

How AD compliance is recorded

A valid compliance record (14 CFR 43.9) states:

Method of compliance — The specific action taken (inspected, replaced, modified) and to what revision.
Date — When the work was done.
Aircraft time — Total time in service / tach at compliance — how recurring next-due is computed.
Signature & certificate — The A&P/IA who returned it to service, with certificate number.
Is AD 2012-24-06 complied with on your aircraft?

Tailplate reads a tail number’s logbooks and matches every applicable AD — including this one — to its compliance evidence, with recurring next-due dates computed.

Look up a tail number →Read the full directive (Federal Register)

Applicability is derived from the FAA directive corpus and is advisory, not a legal airworthiness determination. Compliance is established only from an aircraft’s actual records.