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AD/PHS/23 - Blade Spar Corrosion
Propellers - Variable Pitch - Hamilton SPropellers - Variable Pitch - Hamilton Standard
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Propellers - Variable Pitch - Hamilton Standard
| AD/PHS/23 | Blade Spar Corrosion | 7/2006 TX |
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| Applicability: | Hamilton Sundstrand (formerly Hamilton Standard Division) model 14RF-9 propellers with propeller blades of the "+E'' repair configuration (excludes "+E2'' repair configuration) having serial numbers (SNs) below 885751.Note 1: These propellers are installed on, but not limited to, Embraer 120 aeroplanes.Note 2: The "+E'' blade marking can be found on the blade airfoil or stamped on the blade shank, adjacent to the blade and pin assembly part number.Note 3: If the blade is stamped with "+E2'' no further action is required. |
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| Requirement: | 1. Initial Inspection of Installed Blades Not Previously InspectedFor installed blades not previously inspected using Hamilton Sundstrand Alert Service Bulletin (ASB) No. 14RF-9-61-A143, dated 21 November 2005; or Revision 1, dated 5 December 2005; or ASB No. 14RF-9-61-A144, dated27 February 2006; or ASB No. 14RF-9-61-A145, dated 13 April 2006; or ASB No. 14RF-9-61-146, dated 3 April 2006, perform initial visual, feeler gage, and tap test inspections for delamination in accordance with paragraph 3 of the Accomplishment Instructions of Hamilton Sundstrand ASB No.14RF-9-61-A145.2. 2nd Inspection of Installed BladesFor installed blades that have not been reinspected using Hamilton Sundstrand ASB No. 14RF-9-61-A143 original issue or Revision 1; or ASB No.14RF-9-61-A144; or ASB No. 14RF-9-61-A145; or ASB No. 14RF-9-61-A146, perform a 2nd inspection of installed blades for delamination in accordance with paragraph 3 of the Accomplishment Instructions of Hamilton Sundstrand ASB No. 14RF-9-61-A145. |
| 3. Blades Placed in Service After the Effective Date of This ADFor blades being installed after the effective date of this AD that were not previously inspected using Hamilton Sundstrand ASB No. 14RF-9-61-A143 original issue or Revision 1; or ASB No. 14RF-9-61-A144; or ASB No.14RF-9-61-A145, do the following:(a) Perform initial visual, feeler gage, and tap test inspections for delamination in accordance with paragraph 3 of the Accomplishment Instructions of Hamilton Sundstrand ASB No. 14RF- 9-61-A146.(b) Perform a 2nd inspection for delamination in accordance with paragraph 3 of the Accomplishment Instructions of Hamilton Sundstrand ASB No.14RF-9-61-A146.4. Blades That Fail InspectionRemove propeller blades from service that fail inspection.5. Blade Removal From ServiceRemove from service all blades of the "+E'' repair configuration having SNs below 885751.6. "+E'' repair configuration having SNs below 885751.Do not install any blades of the "+E'' repair configuration having SNs below 885751, onto any propeller.Note 4: Hamilton Sundstrand ASB No. 14RF-9-61-A147, dated 19 April 2006, contains information on upgrading the removed blades to the "+E2'' repair configuration.7. Inspection Reporting RequirementRecord the inspection data on a copy of the data sheet. The data sheet is on page 10 of ASB No. 14RF-9-61-A145 and ASB No. 14RF-9-61-A146. Report the inspection data to Hamilton Sundstrand, fax 0011-1-800-654-5107, and CASA via the SDR reporting system.Note 5: FAA AD 2006-10-07 Amdt 39-14591 refers. |
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