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Federal Register / Vol. 86, No. 35 / Wednesday, February 24, 2021 / Proposed Rules Actions Since AD 20192207 Was Issued
agency will also post a report summarizing each substantive verbal contact received about this proposed AD.
Confidential Business Information CBI is commercial or financial information that is both customarily and actually treated as private by its owner.
Under the Freedom of Information Act FOIA 5 U.S.C. 552, CBI is exempt from public disclosure. If your comments responsive to this NPRM
contain commercial or financial information that is customarily treated as private, that you actually treat as private, and that is relevant or responsive to this NPRM, it is important that you clearly designate the submitted comments as CBI. Please mark each page of your submission containing CBI
as PROPIN. The FAA will treat such marked submissions as confidential under the FOIA, and they will not be placed in the public docket of this NPRM. Submissions containing CBI
should be sent to Steven Dzierzynski, Aerospace Engineer, Avionics and Electrical Systems Section, FAA, New York ACO Branch, 1600 Stewart Avenue, Suite 410, Westbury, NY
11590; telephone 5162287367; email 9-avs-nyaco-cos@faa.gov. Any commentary that the FAA receives which is not specifically designated as CBI will be placed in the public docket for this rulemaking.

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Discussion The FAA issued AD 20192207, Amendment 3919786 85 FR 439, January 6, 2020 AD 20192207, for all MHI RJ Aviation ULC Model CL
6002B19 Regional Jet Series 100 &
440 airplanes, Model CL6002C10
Regional Jet Series 700, 701 & 702
airplanes, Model CL6002D15
Regional Jet Series 705 airplanes, Model CL6002D24 Regional Jet Series 900 airplanes, and Model CL
6002E25 Regional Jet Series 1000
airplanes. AD 20192207 requires revising the existing AFM to include a limitation and an abnormal operating procedure for the AFCS. AD 201922
07 resulted from a report that during AFCS ALTS CAP or V ALTS CAP
mode, the flight guidance/autopilot does not account for engine failure while capturing an altitude. The FAA issued AD 20192207 to address an engine failure, if it occurs during or before a climb while in ALTS CAP or V ALTS
CAP mode, which may cause the airspeed to drop significantly below the safe operating speed, possibly resulting in reduced control of the airplane.

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Since the FAA issued AD 201922
07, it was found that the limitation and abnormal operating procedure did not include reference to V ALTV CAP
mode. It was also found that the MHI RJ
Aviation ULC Model CL6002C11
Regional Jet Series 550 airplanes are also affected by the same unsafe condition.
Transport Canada Civil Aviation TCCA, which is the aviation authority for Canada, has issued TCCA AD CF
201832R1, dated August 7, 2020 also referred to after this as the Mandatory Continuing Airworthiness Information, or the MCAI, to correct an unsafe condition for all MHI RJ Aviation ULC
Model CL6002B19 Regional Jet Series 100 & 440, CL6002C10
Regional Jet Series 700, 701 & 702, CL
6002C11 Regional Jet Series 550, CL
6002D15 Regional Jet Series 705, CL
6002D24 Regional Jet Series 900, and CL6002E25 Regional Jet Series 1000
airplanes. You may examine the MCAI
in the AD docket on the internet at https www.regulations.gov by searching for and locating Docket No.
FAA20210098.
This proposed AD was prompted by a report that found that the limitation and abnormal operating procedure did not include reference to V ALTV CAP
mode Model CL6002B19 airplanes do not have V ALTS CAP or V ALTV
CAP mode. The risk of the unsafe condition also exists during V ALTV
CAP mode. The FAA is proposing this AD to address an engine failure, if it occurs during or before a climb while in ALTS CAP, V ALTS CAP, or V ALTV
CAP mode, as applicable, which may cause the airspeed to drop significantly below the safe operating speed, possibly resulting in reduced control of the airplane. See the MCAI for additional background information.
Related Service Information Under 1
CFR Part 51
Bombardier has issued the following service information, which describes procedures for revising the existing AFM by including a limitation that specifies a warning for the AFCS and an abnormal operating procedure if an engine failure occurs during or before a climb while in ALTS CAP mode, V
ALTS CAP mode, or V ALTV CAP
mode, as applicable. These documents are distinct since they apply to different airplane models.
Subject 2, Automatic Flight Control System AFCS, of Section 02
08, System Limitations, of Chapter 2, LIMITATIONS; and Subject 1.C,
PO 00000

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Engine Failure in Climb During ALTS
CAP, of Section 0502, INFLIGHT
ENGINE FAILURES, of Chapter 5, ABNORMAL PROCEDURES; of the Bombardier CRJ Series Regional Jet Model CL6002B19 AFM, CSP A012, Volume 1, Revision 73, dated January 3, 2020.
Subject 2, Automatic Flight Control System AFCS, of Section 02
08, System Limitations, of Chapter 2, LIMITATIONS; and Subject 1.C, Engine Failure in Climb During ALTS
CAP, and Subject 1.D, Engine Failure in Climb During V ALTS CAP or V
ALTV CAP, of Section 0502, IN
FLIGHT ENGINE FAILURES, of Chapter 5, ABNORMAL
PROCEDURES; of the Bombardier CRJ
Series Regional Jet Model CL6002C10
Series 700, 701, 702 and CL6002C11
Series 550 AFM CSP B012, Revision 31, dated May 8, 2020.
Subject 2, Automatic Flight Control System AFCS, of Section 02
08, System Limitations, of Chapter 2, LIMITATIONS; and Subject 1.C, Engine Failure in Climb During ALTS
CAP, and Subject 1.D, Engine Failure in Climb During V ALTS CAP or V
ALTV CAP, of Section 0502, IN
FLIGHT ENGINE FAILURES, of Chapter 5, ABNORMAL
PROCEDURES; of the Bombardier CRJ
Series Regional Jet Model CL6002D24
Series 900 and CL6002D15 Series 705 AFM, CSP C012, Volume 1, Revision 24, dated March 27, 2020.
Subject 2, Automatic Flight Control System AFCS, of Section 02
08, System Limitations, of Chapter 2, LIMITATIONS; and Subject 1.C, Engine Failure in Climb During ALTS
CAP, and Subject 1.D, Engine Failure in Climb During V ALTS CAP or V
ALTV CAP, of Section 0502, IN
FLIGHT ENGINE FAILURES, of Chapter 5, ABNORMAL
PROCEDURES; of the Bombardier CRJ
Series Regional Jet Model CL6002E25
Series 1000 AFM CSP D012, Revision 23, dated February 14, 2020.
This service information is reasonably available because the interested parties have access to it through their normal course of business or by the means identified in the ADDRESSES section.
FAAs Determination This product has been approved by the aviation authority of another country, and is approved for operation in the United States. Pursuant to the FAAs bilateral agreement with the State of Design Authority, the FAA has been notified of the unsafe condition described in the MCAI and service information referenced above. The FAA
is proposing this AD because the FAA

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