Bell 412 airworthiness directives
An Airworthiness Directive is a legally enforceable FAA rule (14 CFR 39.3). This page is where you look one up by number, subject or aircraft, see what is still in force, and open the official Federal Register record. How we source and re-check every directive.
What these mean
Active - directives in force today. If your aircraft or engine is listed, compliance is required.
Rescinded - directives the FAA has withdrawn. They stay here so an old logbook entry can still be traced to its record.
Corrections - Federal Register notices that fix an error in an existing directive. Each one attaches to the directive it corrects; none is a new rule.
Active counts directives that have not been superseded or rescinded in our index.
Newest superseded directives
- ADAD 2018-17-01Corrects: This AD was prompted by the discovery of an error in the affected models.Bell Helicopter Textron, Inc. (Bell) HelicoptersEffective 2018-09-05Superseded by AD 2019-09-02
- ADAD 2017-15-02Requires replacing certain oil and fuel check valves and prohibits installing them on any helicopter.Bell Helicopter Textron, Inc. (Bell) HelicoptersEffective 2017-08-04Superseded by AD 2018-17-01
- ADAD 2015-04-04Requires revising the Rotorcraft Flight Manual (RFM) and installing a placard in full view of the pilot to…Bell Helicopter Textron Inc. HelicoptersEffective 2015-03-11Superseded by AD 2020-02-11
- ADAD 2011-12-08Requires a one-time inspection of the T[sol]R blade for corrosion or pitting, and repairing or replacing the…Bell Helicopter Textron, Inc. Model 205A, 205A-1, 205B, 212, 412, 412CF, and 412EP HelicoptersEffective 2011-07-05Superseded by AD 2020-12-10
- ADAD 2009-05-09Requires reidentifying a certain part-numbered main rotor yoke (yoke) based on whether it was ever installed…Bell Helicopter Textron Inc. Model 412, 412CF, and 412EP HelicoptersEffective 2009-03-31Superseded by AD 2013-20-18
- ADAD 2008-10-03Requires certain checks and inspections of each tail rotor blade assembly (T/R blade) at specified intervals…Bell Helicopter Textron Model 204B, 205A, 205A-1, 205B, 210, 212, 412, 412CF, and 412EP HelicoptersEffective 2008-05-21Superseded by AD 2013-15-02
- ADAD 2000-18-09Requires inspecting the upper left-hand cap angle (cap angle) and adjacent structure for a crack and, before…Bell Helicopter Textron, Inc. Model 412, 412EP, and 412CF HelicoptersEffective 2000-09-28Superseded by AD 2024-16-01
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