AD Amdt-39-17831
Unsafe Condition
The loss of the bonded metallic leading edge (L/E) guard of the propeller, which could result in damage to the propeller or to the airplane, or injury to personnel.
Required Actions
Inspect all affected blade assemblies where the bonded metallic L/E guard has accumulated 1,200 flight hours time-in-service or less since installation, in accordance with the instructions of Dowty Propellers Alert Service Bulletin (ASB) No. D8400-61-A69, Revision 1, dated September 18, 2007. If disbonding is found, apply the criteria in Appendix A of Dowty Propellers ASB No. D8400-61-A69, Revision 1, dated September 18, 2007 and, within the associated time period, repair or replace the affected blade assembly in accordance with Dowty Propellers ASB No. D8400-61-A69, Revision 1, dated September 18, 2007. Blades that were repaired within the first 101.6 mm (4.0 inches) of the tip of the blade as specified in Appendix D of Dowty Propellers ASB No. D8400-61-A69, Revision 1, dated September 18, 2007, are eligible to continue in service for another 500 flight hours after accomplishment of the repair. Repair does not terminate the repetitive inspection requirements of paragraph (e)(3) of this AD. As optional terminating action to the repetitive inspection requirements of paragraph (e)(3) of this AD, modify the affected propeller using Dowty Propellers Service Bulletin (SB) No. D8400-61-70, Revision 3, dated June 3, 2013, or SB No. D8400-61-83, Revision 4, dated June 3, 2013, as applicable.
Compliance Time
Within the next 50 flight hours (FH) or within 30 days after the effective date of this AD, whichever occurs first
Affected Aircraft
Dowty Propellers model R408/6-123-F/17 propellers with blades, part numbers 697071200-18, 697071210-18, 697071227-18, 697071240-18, 697071245-18, or 697071257-18, installed.
Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
This site is not affiliated with or endorsed by the FAA. Always verify with official sources.