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AD/PHZL/81 - Propeller Attachment Bolts
Propellers - Variable Pitch - HartzellPropellers - Variable Pitch - Hartzell
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Propellers - Variable Pitch - Hartzell
| AD/PHZL/81 | Propeller Attachment Bolts | 10/2005 |
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| Applicability: | Hartzell Propeller Inc. models HC-B3TN-2, HC-B3TN-3, HC-B3TN-5,HC-B3MN-3, HC-B4TN-3, HC-B4TN-5, HC-B4MN-5, HC-B4MP-3, HC-B4MP-5, and HC-B5MP-3 propellers installed with propeller mounting bolts, part number (P/N) B-3339. |
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| Requirement: | Visual Inspections and Torque Checks1. Perform initial visual inspection and torque check of all eight mounting flange bolts when P/N B-3339 bolts from LFC manufacturing Lot No. 12 or Lot No. 56 are present. For the location of bolt identification marks, see Figure 1 of Hartzell Propeller Inc. Alert Service Bulletin (ASB) No. HC-ASB-61-279, Revision 2, dated 6 May 2005.2. For all aeroplanes except Aerospatiale (Nord) Model 262(A) aeroplanes modified by STC SA2369SW, perform repetitive torque checks on all eight mounting flange bolts when P/N B-3339 bolts from LFC Manufacturing Lot No. 12 or Lot No. 56 are present.3. For Aerospatiale (Nord) Model 262(A) aeroplanes modified by STC SA2369SW, perform repetitive torque checks on all eight mounting flange bolts when P/NB-3339 bolts from LFC Manufacturing Lot No. 12 or Lot No. 56 are present.4. If any bolt fails the torque check, replace all eight bolts with P/N B-3339 bolts that are not from LFC Manufacturing Lot No. 12 or Lot No. 56, or with approved equivalent part number bolts.Perform the actions specified in Requirements 1, 2, 3 and 4 of this Directive, using paragraphs 3.A through 3.B.(5) of the Accomplishment Instructions of Hartzell Propeller Inc. ASB No. HC- ASB-61-279, Revision 2.Mandatory Terminating Action5. Replace all P/N B-3339, LFC Manufacturing Lot No. 12 and Lot No. 56 bolts with P/N B-3339 bolts that are not from LFC Manufacturing Lot No. 12 or Lot No. 56, or with approved equivalent part number bolts in accordance with paragraph 3.C of Accomplishment Instructions of Hartzell Propeller Inc. ASB No. HC- ASB-61-279, Revision 2.Note: FAA AD 2005-14-12 Amendment 39-14189 refers. |
| Compliance: | 1. Within 50 hours time-in-service (TIS) or 12 months after the effective date of the Directive, whichever occurs first.2. Within 120 hours TIS since-last-inspection.3. Within 100 hours TIS since-last-inspection.4. Before further flight.5. Within 12 months after the effective date of this Directive. |
| This Airworthiness Directive becomes effective on 29 September 2005. | |