Airworthiness Directives; Bombardier Model CL-215-6B11 (CL-415 Variant) Series Airplanes

[Federal Register Volume 63, Number 177 (Monday, September 14, 1998)]
[Rules and Regulations]
[Pages 48997-48998]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 98-24549]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. 98-NM-03-AD; Amendment 39-10487]
RIN 2120-AA64


Airworthiness Directives; Bombardier Model CL-215-6B11 (CL-415 
Variant) Series Airplanes

AGENCY: Federal Aviation Administration, DOT.

ACTION: Direct final rule; withdrawal.

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SUMMARY: This action withdraws a direct final rule with request for 
comments that adopted a new airworthiness directive (AD), applicable to 
all Bombardier Model CL-215-6B11 (CL-415 Variant) series airplanes. 
That action would have required revising the Airplane Flight Manual 
(AFM) to provide the flightcrew with procedures to address a temporary 
loss of battery bus power during engine failure and consequent 
erroneous indications of hydraulic system pressure, brake pressure, 
rudder pressure, and rudder and elevator reversion to manual mode. 
Since the issuance of the direct final rule, the Federal Aviation 
Administration (FAA) has received a written adverse comment. 
Accordingly, the direct final rule is withdrawn.

FOR FURTHER INFORMATION CONTACT: Rodrigo J. Huete, Flight Test Pilot, 
Systems and Flight Test Branch, ANE-172, FAA, Engine and Propeller 
Directorate, New York Aircraft Certification Office, 10 Fifth Street, 
Third Floor, Valley Stream, New York 11581; telephone (516) 256-7518; 
fax (516) 568-2716.

SUPPLEMENTARY INFORMATION: The FAA published a direct final rule with 
request for comments in the Federal Register on July 9, 1998 (63 FR 
37063). That direct final rule amended part 39 of the Federal Aviation 
Regulations (14 CFR part 39) to add a new airworthiness directive (AD), 
applicable to all Bombardier Model CL-215-6B11 (CL-415 Variant) series 
airplanes, to require revising the Airplane Flight Manual (AFM) to 
provide the flightcrew with procedures to address a temporary loss of 
battery bus power during engine failure and consequent erroneous 
indications of hydraulic system pressure, brake pressure, rudder 
pressure, and rudder and elevator reversion to manual mode. That action 
was prompted by issuance of mandatory continuing airworthiness 
information by a foreign civil airworthiness authority. The specified 
actions were intended to ensure that the flightcrew is advised of the 
potential hazard associated with a temporary loss of battery bus power 
during failure of the left engine or the left generator on the left 
engine and of the procedures necessary to address it.

Actions Since the Issuance of the Direct Final Rule

    During the comment period for the direct final rule, the FAA 
received a written adverse comment. Accordingly, the direct final rule 
is hereby withdrawn.
    Withdrawal of this direct final rule constitutes only such action, 
and does

[[Page 48998]]

not preclude the agency from issuing a notice in the future, nor does 
it commit the agency to any course of action in the future.

Regulatory Impact

    Since this action only withdraws a direct final rule, it has no 
adverse economic impact and imposes no additional burden on any person. 
It will have no substantial direct effects on the States, on the 
relationship between the national government and the States, or on the 
distribution of power and responsibilities among the various levels of 
government. Therefore, in accordance with Executive Order 12612, it is 
determined that this action does not have sufficient federalism 
implications to warrant the preparation of a Federalism Assessment.
    For the reasons discussed above, I certify that this action (1) is 
not a ``significant regulatory action'' under Executive Order 12866; 
(2) is not a ``significant rule'' under DOT Regulatory Policies and 
Procedures (44 FR 11034, February 26, 1979); and (3) will not have a 
significant economic impact, positive or negative, on a substantial 
number of small entities under the criteria of the Regulatory 
Flexibility Act.

List of Subjects in 14 CFR Part 39

    Air transportation, Aircraft, Aviation safety, Safety.

The Withdrawal

    Accordingly, the direct final rule with request for comments, 
Docket 98-NM-03-AD, published in the Federal Register on July 9, 1998 
(63 FR 37063), is withdrawn.
    Issued in Renton, Washington, on September 4, 1998.
Darrell M. Pederson,
Acting Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. 98-24549 Filed 9-11-98; 8:45 am]
BILLING CODE 4910-13-U

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