Airworthiness Directive 2015-33288
one-timeAirworthiness Directives; Bombardier, Inc. Airplanes
What this AD requires
We are adopting a new airworthiness directive (AD) for certain Bombardier, Inc. Model CL-600-2B19 (Regional Jet Series 100 & 440) airplanes. This AD was prompted by reports that the horizontal stabilizer trim actuator (HSTA) spur gear bolts inside the gearbox were found loose, broken, or backed out due to incorrect bending of the anti-rotation tab washer and the improper application of Loctite glue during installation. This AD requires replacing certain HSTAs with a new HSTA. This AD also requires revising the airplane flight manual (AFM) and the maintenance or inspection program, as applicable. We are issuing this AD to prevent failure of the HSTA and subsequent loss of control of the airplane.
Which aircraft AD 2015-33288 applies to
Regional Jet Series 100 & 440; applies only to airplanes equipped with horizontal stabilizer trim actuator (HSTA) part number 601R92305-1 (vendor P/N 8396-2), 601R92305-3 (vendor P/N 8396-3), or 601R92305-5 (vendor P/N 8396-4).
Whether AD 2015-33288 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:
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.