[Federal Register Volume 63, Number 235 (Tuesday, December 8, 1998)] [Rules and Regulations] [Page 67576] From the Federal Register Online via the Government Publishing Office [www.gpo.gov] [FR Doc No: 98-32473] [[Page 67576]] ======================================================================= ----------------------------------------------------------------------- DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. 98-CE-63-AD; Amendment 39-10836; AD 98-21-28] RIN 2120-AA64 Airworthiness Directives; British Aerospace Jetstream Model 3101 Airplanes AGENCY: Federal Aviation Administration, DOT. ACTION: Direct final rule; confirmation of effective date. ----------------------------------------------------------------------- SUMMARY: This action confirms the effective date of Airworthiness Directive (AD) 98-21-28, which applies to certain British Aerospace Jetstream Model 3101 airplanes. AD 98-21-28 requires modifying the propeller de-icing system to assure system performance at low ambient temperatures. This AD was the result of mandatory continuing airworthiness information (MCAI) issued by the airworthiness authority for the United Kingdom. The actions specified in this AD are intended to prevent propeller-induced vibrations from occurring during icing encounters at low ambient temperatures, which could result in decreased performance of the de-icing system during icing encounters with possible loss of control of the airplane. EFFECTIVE DATE: January 15, 1999. FOR FURTHER INFORMATION CONTACT: Mr. S.M. Nagarajan, Aerospace Engineer, FAA, Small Airplane Directorate, 1201 Walnut, suite 900, Kansas City, Missouri 64106; telephone: (816) 426-6932; facsimile: (816) 426-2169. SUPPLEMENTARY INFORMATION: The FAA published this direct final rule with request for comments in the Federal Register on October 14, 1998 (63 FR 55015). 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 January 15, 1999. No adverse comments were received, and thus this notice confirms that this final rule will become effective on that date. Issued in Kansas City, Missouri, on December 1, 1998. James E. Jackson, Acting Manager, Small Airplane Directorate, Aircraft Certification Service. [FR Doc. 98-32473 Filed 12-7-98; 8:45 am] BILLING CODE 4910-13-U