| |
 Federal Register Information
 Header Information
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. 2003-NE-48-AD; Amendment 39-13669; AD 2004-12-10]
RIN 2120-AA64
Airworthiness Directives; Hamilton Sundstrand Corporation (Formerly Hamilton Standard Division) Model 568F Propellers
PDF Copy (If Available):
Preamble Information
Regulatory Information
2004-12-10 Hamilton Sundstrand Corporation (formerly Hamilton Standard Division): Amendment 39-13669. Docket No. 2003-NE-48-AD.
Effective Date
(a) This AD becomes effective July 19, 2004.
Affected ADs
(b) None.
Applicability
(c) This AD applies to Hamilton Sundstrand Corporation (formerly Hamilton Standard Division) 568F propellers with propeller blades, part numbers (P/Ns) R815505-3 and R815505-4, serial numbers (SNs) FR1699 through FR2625 inclusive (877 blades), and SNs FR20010610 through FR20021010 inclusive (713 blades), installed. These composite propeller blades are installed on, but not limited to, Aerospatiale ATR42-400, ATR42-500, ATR72-212, and ATR72-500 airplanes.
Unsafe Condition
(d) This AD results from reports of propeller blades found at inspection, with random areas of missing adhesive under the compression wrap, which exposed the steel tulip part of the blade. We are issuing this AD to prevent propeller blade failure due to corrosion-induced fatigue, which could result in blade separation and possible loss of airplane control.
Compliance
(e) You are responsible for having the actions required by this AD performed within the compliance times specified unless the actions have already been done.
Removal From Service of Affected Propeller Blades
(f) Remove propeller blades, P/Ns R815505-3 and R815505-4 from service as follows:
(1) Blades listed by SN in the following Table 1 of this AD must be removed no later than the date listed in Table 1 of this AD. See Table 2 of this AD for blade SNs that are excluded from the compliance times specified in Table 1 of this AD.
(2) Remove the blades that are listed by SN in Table 2 of this AD no later than December 31, 2007.
(3) In some instances, an "RT" reference immediately follows the numeric portion of the serial number on the blade. For purposes of this AD, the "RT" reference has been omitted when specifying affected serial numbers.
Table 1.--Propeller Blade Removal Schedule
For propeller blades SNs: | Remove propeller blades from
service for rework, no later than: |
|
| FR1699 through FR1765. | December 31, 2003. |
| FR1766 through FR1776. | March 31, 2004. |
| FR1777 through FR1855. | June 30, 2004. |
| FR1856 through FR1956. | September 30, 2004. |
| FR1957 through FR2132. | December 31, 2004. |
| FR2133 through FR2230. | March 31, 2005. |
| FR2231 through FR2315. | June 30, 2005. |
| FR2316 through FR2390. | September 30, 2005. |
| FR2391 through FR2433. | December 31, 2005. |
| FR2434 through FR2553. | March 31, 2006. |
| FR2554 through FR2625. | June 30, 2006. |
| FR20010610 through FR20010729. | June 30, 2006 |
| FR20010730 through FR20011018. | September 30, 2006. |
| FR20011019 through FR20011218. | December 31, 2006. |
| FR20011219 through FR20020511. | March 31, 2007. |
| FR20020512 through FR20020757. | June 30, 2007. |
| FR20020758 through FR20020842. | September 30, 2007. |
| FR20020843 through FR20021010. | December 31, 2007. |
Table 2.--Blade SNs Excluded From Table 1
| FR1720 | FR1887 | FR1962 | FR2163 |
| FR1740 | FR1888 | FR1963 | FR2164 |
| FR1742 | FR1889 | FR2013 | FR2165 |
| FR1752 | FR1892 | FR2022 | FR2166 |
| FR1777 | FR1893 | FR2032 | FR2167 |
| FR1791 | FR1927 | FR2037 | FR2168 |
| FR1796 | FR1928 | FR2038 | FR2173 |
| FR1841 | FR1929 | FR2039 | FR2177 |
| FR1843 | FR1930 | FR2047 | FR2179 |
| FR1858 | FR1931 | FR2058 | FR2180 |
| FR1860 | FR1932 | FR2059 | FR2183 |
| FR1865 | FR1933 | FR2060 | FR2204 |
| FR1869 | FR1934 | FR2063 | FR2205 |
| FR1871 | FR1935 | FR2064 | FR2206 |
| FR1872 | FR1936 | FR2067 | FR2207 |
| FR1873 | FR1937 | FR2068 | FR2208 |
| FR1874 | FR1938 | FR2099 | FR2233 |
| FR1875 | FR1942 | FR2108 | FR2234 |
| FR1877 | FR1943 | FR2134 | FR2467 |
| FR1878 | FR1957 | FR2135 | FR20010626 |
| FR1879 | FR1960 | FR2136 | FR20010936 |
| FR1880 | FR1961 | FR2137 | FR20011218 |
Installation of Propeller Blades that have a SN Listed in Table 1 or Table 2 of this AD
(g) After the effective date of this AD, do not install any blade that has P/N R815505-3 or R815505-4 and SN listed in Table 1 or Table 2 of this AD, and that has exceeded the date for replacement.
Alternative Methods of Compliance (AMOCs)
(h) The Manager, Boston Aircraft Certification Office, has the authority to approve alternative methods of compliance for this AD if requested using the procedures found in 14 CFR 39.19.
Material Incorporated by Reference
(i) None.
Related Information
(j) Hamilton Sundstrand Service Bulletin No. 568F-61-A45, Revision 1, dated October 7, 2003, provides information to rework and remark the affected blades for return to service.
Footer Information
Issued in Burlington, Massachusetts, on June 1, 2004.
Francis A. Favara,
Acting Manager, Engine and Propeller Directorate,
Aircraft Certification Service.
[FR Doc. 04-13145 Filed 6-10-04; 8:45 am]
BILLING CODE 4910-13-P
Comments
|