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#Historically accurate 4 bladed propellers for all subs serial number#
#Historically accurate 4 bladed propellers for all subs pdf#

Those ASBs define the affected blade population, describe procedures for inspecting the blades, and define requirements for removing the blade. Hamilton Sundstrand issued the following ASBs: Blades of the “+E” repair configuration with SNs below 885751, are susceptible to delamination and corrosion. 14RF-9-61-A92 were limited to blades with SNs below SN 885751. The repairs done using Hamilton Sundstrand ASB No. 14RF-9-61-A92 and marked with the “+E” repair configuration. The repairs were done using Hamilton Sundstrand Alert Service Bulletin (ASB) No. The delamination allows corrosion to form on the aluminum blade spar under the patch. In March 2006, we became aware of reports of 263 Hamilton Sundstrand model 14RF-9 “+E” repair configuration propeller blades with delaminated blade fiberglass repair patches. End Further Info End Preamble Start Supplemental Information SUPPLEMENTARY INFORMATION: Start Further Info FOR FURTHER INFORMATION CONTACT:įrank Walsh, Aerospace Engineer, Boston Aircraft Certification Office, FAA, Engine & Propeller Directorate, 12 New England Executive Park, Burlington, MA 01803 telephone (781) 238-7158 fax (781) 238-7170. and 5 p.m., Monday through Friday, except Federal holidays.įor the service information identified in this AD, contact the Hamilton Sundstrand Propeller Technical Team, One Hamilton Road, Mail Stop 1-3-AB43, Windsor Locks, CT 06096-1010 fax 1-86.

Hand Delivery: Room PL-401 on the plaza level of the Nassif Building, 400 Seventh Street, SW., Washington, DC, between 9 a.m.

Department of Transportation, 400 Seventh Street, SW., Nassif Building, Room PL-401, Washington, DC 20590-0001.

Government-wide rulemaking Web site: Go to and follow the instructions for sending your comments electronically.

DOT Docket Web site: Go to and follow the instructions for sending your comments electronically.

Use one of the following addresses to comment on this AD: We must receive any comments on this AD by July 11, 2006. The Director of the Federal Register approved the incorporation by reference of certain publications listed in the regulations as of May 22, 2006. We are issuing this AD to prevent blade failure that could result in separation of a propeller blade and loss of control of the airplane. This AD results from reports of delaminated blade fiberglass repair patches that allowed corrosion to form on the aluminum blade spar under the patch. This AD also requires removing those serial-numbered propeller blades from service by March 1, 2007.

#Historically accurate 4 bladed propellers for all subs serial number#

This AD requires visual, feeler gage, and tap test inspections of certain serial number (SN) propeller blades of the “+E” repair configuration for blade delamination, and removing the blade from service if the blade fails inspection. The FAA is adopting a new airworthiness directive (AD) for Hamilton Sundstrand model 14RF-9 propellers. Start Preamble Start Printed 00 AGENCY:įederal Aviation Administration (FAA), Department of Transportation (DOT).

Blades Placed in Service After the Effective Date of This AD.

Initial Inspection of Installed Blades Not Previously Inspected.

Identifying the Blade Repair Configuration.

FAA's Determination of the Effective Date.

FAA's Determination and Requirements of this AD.

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#Historically accurate 4 bladed propellers for all subs pdf#

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