Airworthiness Directives; Bombardier Model CL-600-2B16 Series Airplanes

[Federal Register Volume 63, Number 95 (Monday, May 18, 1998)]
[Rules and Regulations]
[Page 27195]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 98-12513]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. 98-NM-21-AD; Amendment 39-10425; AD 97-25-11R1]
RIN 2120-AA64


Airworthiness Directives; Bombardier Model CL-600-2B16 Series 
Airplanes

AGENCY: Federal Aviation Administration, DOT.

ACTION: Direct final rule; confirmation of effective date.

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SUMMARY: This document confirms the effective date of a direct final 
rule published on March 27, 1998 which revised an existing 
airworthiness directive (AD), applicable to certain Bombardier Model 
CL-600-2B16 series airplanes, that currently requires disabling the 
remote fuel/defuel panel in the cockpit; and provides for an optional 
modification of the remote fuel/defuel panel, which would terminate the 
requirement to disable the panel. The direct final rule amendment 
reduces the applicability of the existing AD. The direct final rule 
amendment was prompted by reports of in-flight failure of the panel 
that resulted when a circuit breaker on a battery bus opened due to 
insufficient current flow capacity. The actions specified in this AD 
are intended to prevent the circuit breakers from opening during 
flight, which could result in irreversible loss of engine indicating 
and fuel quantity systems in the cockpit.

DATES: The direct final rule published at 63 FR 14804 is effective on 
June 25, 1998.

FOR FURTHER INFORMATION CONTACT: Brett Portwood, Aerospace Engineer, 
Systems and Equipment Branch, ANM-130L, FAA, Transport Airplane 
Directorate, Los Angeles Aircraft Certification Office, 3960 Paramount 
Boulevard, Lakewood, California 90712; telephone (562) 627-5350; fax 
(562) 627-5210.

SUPPLEMENTARY INFORMATION: The FAA published the direct final rule with 
request for comments in the Federal Register on March 27, 1998 (63 FR 
14804). The FAA uses the direct final rulemaking procedure for a non-
controversial rule where the FAA anticipates that there will be no 
adverse public comment. The direct final rule advised the public that 
no adverse comments were anticipated, and that unless a written adverse 
comment, or a written notice of intent to submit such an adverse 
comment, was received within the comment period, the regulation would 
become effective on June 25, 1998. No adverse comments were received, 
and thus this document confirms that this final rule will become 
effective on that date, with the airworthiness directive (AD) number 
shown at the beginning of this document.

    Issued in Renton, Washington, on May 5, 1998.
John J. Hickey,
Acting Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. 98-12513 Filed 5-15-98; 8:45 am]
BILLING CODE 4910-13-P

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