Airworthiness directives: British Aerospace,

[Federal Register: June 9, 1998 (Volume 63, Number 110)]

[Rules and Regulations]

[Page 31347]

From the Federal Register Online via GPO Access [wais.access.gpo.gov]

[DOCID:fr09jn98-6]

[[Page 31347]]

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. 97-NM-321-AD; Amendment 39-10444; AD 98-12-17]

RIN 2120-AA64

Airworthiness Directives; British Aerospace Model Viscount 744, 745, 745D, and 810 Series Airplanes

AGENCY: Federal Aviation Administration, DOT.

ACTION: Direct final rule; confirmation of effective date.

SUMMARY: This document confirms the effective date of a direct final rule published on April 2, 1998, which adopted a new airworthiness directive (AD) that is applicable to all British Aerospace Model Viscount 744, 745, 745D, and 810 series airplanes. This amendment requires repetitive inspections to detect cracking and corrosion of components of the engine nacelle subframe structure, and corrective action, if necessary; and replacement of any component that has reached its life limit (safe life) with a new or serviceable component. This amendment is prompted by issuance of mandatory continuing airworthiness information by a foreign civil airworthiness authority. The actions specified in this AD are intended to ensure periodic replacement of certain engine nacelle subframe components that have reached their maximum life limits. Cracking and corrosion of these components, if not detected and corrected in a timely manner, could result in reduced structural integrity of the engine nacelle subframe structure, separation of the engine from the airframe, and reduced controllability of the airplane.

EFFECTIVE DATE: The direct final rule published at 63 FR 16111 is effective on July 1, 1998.

FOR FURTHER INFORMATION CONTACT: Norman B. Martenson, Manager, International Branch, ANM-116, FAA, Transport Airplane Directorate, 1601 Lind Avenue, SW., Renton, Washington 98055-4056; telephone (425) 227-2110; fax (425) 227-1149.

SUPPLEMENTARY INFORMATION: The FAA published this direct final rule with request for comments in the Federal Register on April 2, 1998 (63 FR 16111). 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. This 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 July 1, 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 June 2, 1998. Darrell M. Pederson, Acting Manager, Transport Airplane Directorate, Aircraft Certification Service.

[FR Doc. 98-15133Filed6-8-98; 8:45 am]

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