Airworthiness Directives; Pilatus Aircraft Ltd. Models PC-12 and PC-12/45 Airplanes

[Federal Register Volume 64, Number 90 (Tuesday, May 11, 1999)]
[Rules and Regulations]
[Pages 25200-25201]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 99-11780]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. 99-CE-03-AD; Amendment 39-11081; AD 99-06-17]
RIN 2120-AA64


Airworthiness Directives; Pilatus Aircraft Ltd. Models PC-12 and 
PC-12/45 Airplanes

AGENCY: Federal Aviation Administration, DOT.

ACTION: Direct final rule; confirmation of effective date.

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SUMMARY: This action confirms the effective date of Airworthiness 
Directive (AD) 99-06-17, which applies to certain Pilatus Aircraft Ltd. 
(Pilatus) Models PC-12 and PC-12/45 airplanes. AD 99-06-17 requires 
installing a support bracket and a cut-out relay for the second 
generator control unit. AD 99-06-17 also requires making all the wiring 
additions and adjustments necessary for the above-referenced 
installations. This AD was the result of mandatory continuing 
airworthiness information (MCAI) issued by the airworthiness authority 
for Switzerland. The actions specified in this AD are intended to 
prevent damage to electrical components because incorrectly connected 
cables or broken or damaged wires cause excessive voltages to the 
second generator, which could result in loss of electrical power during 
any phase of flight.

EFFECTIVE DATE: June 16, 1999.

FOR FURTHER INFORMATION CONTACT: Mr. Roman T. Gabrys, Aerospace 
Engineer, FAA, Small Airplane Directorate, 1201 Walnut, suite 900, 
Kansas City, Missouri 64106; telephone: (816) 426-6932; facsimile: 
(816) 426-2169.


[[Page 25201]]


SUPPLEMENTARY INFORMATION: The FAA published this direct final rule 
with request for comments in the Federal Register on March 23, 1999 (64 
FR 13882). 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 June 16, 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 May 4, 1999.
Michael Gallagher,
Manager, Small Airplane Directorate, Aircraft Certification Service.
[FR Doc. 99-11780 Filed 5-10-99; 8:45 am]
BILLING CODE 4910-13-P

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