Airworthiness directives › 2016-23-07
AD 2016-23-07 Airworthiness Directives; Bombardier, Inc. Airplanes
Applicability*9
This AD applies to Bombardier, Inc. Model CL-600-2B19 (Regional Jet Series 100 & 440) airplanes, certificated in any category, serial numbers 7003 through 8113 inclusive.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
(1) For airplanes on which the detailed inspection specified in Bombardier Service Bulletin 601R-27-160, dated September 29, 2011; or Bombardier Service Bulletin 601R-27-160, Revision A, dated October 3, 2012; has not been done as of the effective date of this AD: At the earliest of the times specified in paragraphs (g)(1)(i), (g)(1)(ii), and (g)(1)(iii) of this AD, measure the diameter of the bolts that attach the trunnions and pins; measure the diameter of the attach holes in the airplane structure, and, as applicable, measure the diameter of the attach holes in the trunnions and pins; do detailed visual inspections for gouges, scratches, and corrosion of the trunnions and pins; do detailed visual inspections for damage of the spacers; do corrective actions; and re-identify trunnions and pins; in accordance with Part A of the Accomplishment Instructions of Bombardier Service Bulletin 601R-27-160, Revision D, dated October 22, 2015; except as required by paragraph (h) of this AD. Do all applicable corrective actions before further flight. (i) Within 5,000 flight hours after March 11, 2013 (the effective date of AD 2013-02-08). (ii) Within 60 months after March 11, 2013 (the effective date of AD 2013-02-08). (iii) Before the accumulation of 40,000 total flight cycles, or within 60 days after March 11, 2013 (the effective date of AD 2013-02-08), whichever occurs later. (2) For airplanes on which the detailed inspection specified in Bombardier Service Bulletin 601R-27-160, dated September 29, 2011; or Bombardier Service Bulletin 601R-27-160, Revision A, dated October 3, 2012; has been done as of the effective date of this AD: Within 9,600 flight hours or 60 months after the effective date of this AD, whichever occurs first, measure the diameter of the bolts that attach the trunnions and pins; measure the diameter of the attach holes in the airplane structure, and, as applicable, measure the diameter of the attach holes in the trunnions and pins; do detailed visual inspections for gouges, scratches, and corrosion of the trunnions and pins; do detailed visual inspections for damage of the spacers; do corrective actions; and re-identify trunnions and pins; in accordance with Part B of the Accomplishment Instructions of Bombardier Service Bulletin 601R-27-160, Revision D, dated October 22, 2015, except as required by paragraph (h) of this AD. Do all applicable corrective actions before further flight.
Unsafe condition
This AD was prompted by a determination that not all affected attachment pins and trunnions were included in the inspections required by AD 2013-02-08, and that incorrect attachment hardware may have been used in replacements on certain airplanes. We are issuing this AD to prevent failure of the attachment pins and trunnions of the horizontal stabilizer trim actuator (HSTA), which could result in separation of the horizontal stabilizer, and consequent loss of control of the airplane.
Affected ADs
This AD replaces AD 2013-02-08, Amendment 39-17329 (78 FR 7647, February 4, 2013) (“AD 2013-02-08”).
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