Airworthiness Directive · Amendment 39-17315 · Hydraulic power
Bombardier, Inc. Airplanes
This AD applies to Bombardier, Inc. Model CL-600-2B19 (Regional Jet Series 100 & 440) airplanes, certificated in any category, serial numbers 7003 and subsequent.
We are superseding an existing airworthiness directive (AD) for certain Bombardier, Inc. Model CL-600-2B19 (Regional Jet Series 100 & 440) airplanes. That AD currently requires revising the airplane flight manual, deactivating and removing certain hydraulic accumulators, inspecting for cracks on accumulators and screw caps, and replacing certain accumulators. For certain airplanes, this new AD reduces the compliance time for a certain replacement. This AD was prompted by reports of on-ground hydraulic accumulator screw cap/end cap failure. We are issuing this AD to detect and correct hydraulic accumulator screw cap/end cap failure, which could result in the loss of the associated hydraulic system and high-energy impact damage to adjacent systems and structure, and consequent loss of control of the airplane.
You are responsible for having the actions required by this AD performed within the compliance times specified, unless the actions have already been done.
This paragraph restates the AFM revision required by paragraph (g) of AD 2011-23-08, Amendment 39-16859 (76 FR 71241, November 17, 2011), with revised service information. Within 30 days after November 4, 2010 (the effective date of AD 2010-22-02, Amendment 39-16481 (75 FR 64636, October 20, 2010)), revise the Limitations section, Normal Procedures section, and Abnormal Procedures section of the Canadair Regional Jet AFM, CSP A-012, by incorporating Canadair Regional Jet Temporary Revision (TR) RJ/186-1, dated August 24, 2010; or Canadair Regional Jet TR RJ/186-2, dated July 7, 2011; into the applicable section of Canadair Regional Jet AFM, CSP A-012. Thereafter, except as provided by paragraph (p) of this AD, no alternative actions specified in Canadair Regional Jet TR RJ/186-1, dated August 24, 2010; or Canadair Regional Jet TR RJ/186-2, dated July 7, 2011; may be approved.
Note 1 to paragraph (g) of this AD: The actions required by paragraph (g) of this AD may be done by inserting a copy of Canadair Regional Jet TR RJ/186-1, dated August 24, 2010; or Canadair Regional Jet TR RJ/186-2, dated July 7, 2011; into the applicable section of the Canadair Regional Jet AFM, CSP A-012. When one of these TRs has been included in the general revisions of this AFM, the general revisions may be inserted into this AFM, and the TR removed, provided that the relevant information in the general revision is identical to that in Canadair Regional Jet TR RJ/186-1, dated August 24, 2010; or Canadair Regional Jet TR RJ/186-2, dated July 7, 2011.
This paragraph restates the deactivation required by paragraph (h) of AD 2011-23-08, Amendment 39-16859 (76 FR 71241, November 17, 2011). Within 250 flight cycles after November 4, 2010 (the effective date of AD 2010-22-02, Amendment 39-16481 (75 FR 64636, October 20, 2010)), deactivate the hydraulic system No. 3 accumulator, in accordance with Part A of the Accomplishment Instructions of Bombardier Alert Service Bulletin A601R-29-031, Revision A, dated March 26, 2009. Doing the removal of the hydraulic system No. 3 accumulator in paragraph (l) of this AD terminates the requirements of this paragraph. The actions in this paragraph apply to all accumulators in hydraulic system No. 3.
This paragraph restates the removal required by paragraph (i) of AD 2011-23-08, Amendment 39-16859 (76 FR 71241, November 17, 2011). Within 500 flight cycles after November 4, 2010 (the effective date of AD 2010-22-02, Amendment 39-16481 (75 FR 64636, October 20, 2010)), remove the hydraulic system No. 2 accumulator, in accordance with the Accomplishment Instructions of Bombardier Service Bulletin 601R-29-032, Revision A, dated January 26, 2010. The actions in this paragraph apply to all accumulators in hydraulic system No. 2.
This paragraph restates the initial and repetitive ultrasonic inspections required by paragraph (j) of AD 2011-23-08, Amendment 39-16859 (76 FR 71241, November 17, 2011), with revised service information. For hydraulic system No. 1, inboard brake and outboard brake accumulators having part number (P/N) 601R75138-1 (08-60163-001 or 08-60163-002): At the applicable compliance times specified in paragraph (k) of this AD, do the inspections required by paragraphs (j)(1) and (j)(2) of this AD. Repeat the inspections for each accumulator having P/N 601R75138-1 (08-60163-001 or 08-60163-002) thereafter at intervals not to exceed 500 flight cycles until the replacement specified in this paragraph is done, or the replacement specified in paragraph (m) of this AD is done. If any crack is found, before further flight, replace the accumulator with a new accumulator having P/N 601R75138-1 (08-60163-001 or 08-60163-002) and having the letter “T” after the serial number on the identification plate, in accordance with the Accomplishment Instructions of the applicable service bulletin specified in paragraphs (j)(1)(i), (j)(1)(ii), (j)(2)(i), and (j)(2)(ii) of this AD.
Note 2 to paragraph (j) of this AD: For any accumulator having P/N 601R75138-1 (08-60163-001 or 08-60163-002) and the letter “T” after the serial number on the identification plate, or for any accumulator having a part number that is not listed in paragraph (j) of this AD, the inspection specified in paragraph (j) of this AD is not required.
(1) Do an ultrasonic inspection for cracks on each accumulator, in accordance with Part B of the Accomplishment Instructions of the applicable service bulletin specified in paragraphs (j)(1)(i) and (j)(1)(ii) of this AD.
(i) For the hydraulic system No. 1 accumulator: Bombardier Alert Service Bulletin A601R-29-029, Revision B, dated May 11, 2010, including Appendix A, dated October 18, 2007.
(ii) For the inboard and outboard brake accumulators: Bombardier Alert Service Bulletin A601R-32-103, Revision D, dated May 11, 2010, including Appendix A, Revision A, dated October 18, 2007.
(2) Do an ultrasonic inspection for cracks on the screw cap, in accordance with the Accomplishment Instructions of the applicable service specified in paragraphs (j)(2)(i) and (j)(2)(ii) of this AD.
(i) For the hydraulic system No. 1 accumulator: Bombardier Service Bulletin 601R-29-033, Revision A, dated May 11, 2010, including Appendix A, dated May 5, 2009.
(ii) For the inboard and outboard brake accumulators: Bombardier Service Bulletin 601R-32-106, including Appendix A, Revision A, dated May 11, 2010.
This paragraph restates the compliance times required by paragraph (k) of AD 2011-23-08, Amendment 39-16859 (76 FR 71241, November 17, 2011). For hydraulic system No. 1 inboard brake, and outboard brake accumulators having P/N 601R75138-1 (08-60163-001 or 08-60163-002): Do the inspections specified in paragraph (j) of this AD at the applicable time in paragraphs (k)(1), (k)(2), and (k)(3) of this AD.
(1) For any accumulator not having the letter “T” after the serial number on the identification plate and with more than 4,500 flight cycles on the accumulator as of November 4, 2010 (the effective date of AD 2010-22-02, Amendment 39-16481 (75 FR 64636, October 20, 2010)): Inspect within 500 flight cycles after November 4, 2010 (the effective date of AD 2010-22-02).
(2) For any accumulator not having the letter “T” after the serial number on the identification plate and with 4,500 flight cycles or less on the accumulator as of November 4, 2010 (the effective date of AD 2010-22-02, Amendment 39-16481 (75 FR 64636, October 20, 2010)): Inspect prior to the accumulation of 5,000 flight cycles on the accumulator.
(3) If it is not possible to determine the flight cycles accumulated for any accumulator not having the letter “T” after the serial number on the identification plate: Inspect within 500 flight cycles after November 4, 2010 (the effective date of AD 2010-22-02, Amendment 39-16481 (75 FR 64636, October 20, 2010)).
This paragraph restates the removal required by paragraph (o) of AD 2011-23-08, Amendment 39-16859 (76 FR 71241, November 17, 2011). Within 1,000 flight cycles after December 22, 2011 (the effective date of AD 2011-23-08), remove the hydraulic system No. 3 accumulator, in accordance with Part B of the Accomplishment Instructions of Bombardier Alert Service Bulletin A601R-29-031, Revision A, dated March 26, 2009. Doing the action in this paragraph terminates the requirements of paragraph (h) of this AD.
This paragraph restates the replacement required by paragraph (p) of AD 2011-23-08, Amendment 39-16859 (76 FR 71241, November 17, 2011). Within 4,000 flight cycles or 24 months after December 22, 2011 (the effective date of AD 2011-23-08), whichever occurs first, replace any hydraulic system No. 1, inboard brake or outboard brake accumulator having P/N 601R75138-1 (08-60163-001 or 08-60163-002), with a new accumulator having P/N 601R75139-1 (11093-4), in accordance with the Accomplishment Instructions of the applicable service bulletin identified in paragraphs (m)(1) through (m)(4) of this AD. Doing the action in this paragraph terminates the requirement for the inspections in paragraph (j) of this AD for that accumulator. As of December 22, 2011 (the effective date of AD 2011-23-08), use only the applicable service bulletin specified in paragraph (m)(2) or (m)(4) of this AD.
(1) For the hydraulic system No. 1 accumulator: Bombardier Service Bulletin 601R-29-035, dated May 11, 2010.
(2) For the hydraulic system No. 1 accumulator: Bombardier Service Bulletin 601R-29-035, Revision A, dated December 8, 2010.
(3) For the inboard and outboard brake accumulators: Bombardier Service Bulletin 601R-32-107, Revision A, dated June 17, 2010.
(4) For the inboard and outboard brake accumulators: Bombardier Service Bulletin 601R-32-107, Revision B, dated December 8, 2010.
This paragraph restates the action required by paragraph (q) of AD 2011-23-08, Amendment 39-16859 (76 FR 71241, November 17, 2011), with reduced compliance time. For airplanes on which Bombardier Service Bulletin 601R-29-035, dated May 11, 2010, is done, and on which a reducer having P/N MS21916D8-6 is installed: At the later of the times specified in paragraphs (n)(1) and (n)(2) of this AD, replace the reducer of the hydraulic system No. 1 with a new reducer, in accordance with Part B of the Accomplishment Instructions of Bombardier Service Bulletin 601R-29-035, Revision A, dated December 8, 2010.
(1) Within 1,200 flight cycles or 8 months after December 22, 2011 (the effective date of AD 2011-23-08, Amendment 39-16859 (76 FR 71241, November 17, 2011)), whichever occurs first.
(2) Within 60 days after the effective date of this AD.
(1) This paragraph provides credit for deactivating the hydraulic system No. 3 accumulator required by paragraph (h) of this AD, if the deactivation was performed before November 4, 2010 (the effective date of AD 2010-22-02, Amendment 39-16481 (75 FR 64636, October 20, 2010)), using Bombardier Alert Service Bulletin A601R-29-031, dated December 23, 2008, which is not incorporated by reference in this AD.
(2) This paragraph provides credit for removing the hydraulic system No. 2 accumulator required by paragraph (i) of this AD, if the removal was performed before November 4, 2010 (the effective date of AD 2010-22-02, Amendment 39-16481 (75 FR 64636, October 20, 2010)), using Bombardier Service Bulletin 601R-29-032, dated November 12, 2009, which is not incorporated by reference in this AD.
(3) This paragraph provides credit for an ultrasonic inspection for cracks required by paragraph (j) of this AD, if the ultrasonic inspection was performed before November 4, 2010 (the effective date of AD 2010-22-02, Amendment 39-16481 (75 FR 64636, October 20, 2010)), using the applicable service bulletin identified in paragraphs (o)(3)(i) through (o)(3)(viii) of this AD; as applicable; which are not incorporated by reference in this AD.
(i) Bombardier Alert Service Bulletin A601R-29-029, dated October 18, 2007.
(ii) Bombardier Alert Service Bulletin A601R-29-029, Revision A, dated November 12, 2009.
(iii) Bombardier Alert Service Bulletin A601R-32-103, dated November 21, 2006.
(iv) Bombardier Alert Service Bulletin A601R-32-103, Revision A, dated March 7, 2007.
(v) Bombardier Alert Service Bulletin A601R-32-103, Revision B, dated October 18, 2007.
(vi) Bombardier Alert Service Bulletin A601R-32-103, Revision C, dated February 26, 2009.
(vii) Bombardier Service Bulletin 601R-29-033, dated May 5, 2009.
(viii) Bombardier Service Bulletin 601R-32-106, dated May 5, 2009.
(4) This paragraph provides credit for removing the hydraulic system No. 3 accumulator required by paragraph (l) of this AD, if the removal was performed before December 22, 2011 (the effective date of AD 2011-23-08, Amendment 39-16859 (76 FR 71241, November 17, 2011)), using Bombardier Alert Service Bulletin A601R-29-031, dated December 23, 2008, which is not incorporated by reference in this AD.
(5) This paragraph provides credit for replacing any inboard brake or outboard brake accumulator required by paragraph (m) of this AD, if the replacement was performed before December 22, 2011 (the effective date of AD 2011-23-08, Amendment 39-16859 (76 FR 71241, November 17, 2011)), using Bombardier Service Bulletin 601R-32-107, dated May 11, 2010, which is not incorporated by reference in this AD.
