Airworthiness Directive · Amendment 39-17548 · Hamilton Standard Division and Hamilton Sundstrand Corporation Propellers
Hamilton Standard Division and Hamilton Sundstrand Corporation Propellers
This AD applies to Hamilton Standard Division 6/5500/F and 24PF and Hamilton Sundstrand Corporation 14RF, 14SF, 247F, and 568F series propellers.
We are adopting a new airworthiness directive (AD) for Hamilton Standard Division model 6/5500/F and 24PF and Hamilton Sundstrand Corporation model 14RF, 14SF, 247F, and 568F series propellers. This AD was prompted by the amount of corrosion detected during major inspections (MI). This AD requires incorporating inspections, based on a calendar time, into the propeller maintenance schedule. We are issuing this AD to prevent corrosion that could result in propeller failure and loss of airplane control.
For Hamilton Sundstrand Corporation propeller models 14RF-9, 14RF-21, 14SF-5, 14SF-7, 14SF-11E, and 568F-1, that have an approved update to the ALS, within 45 days after the effective date of this AD, perform an MI on the blades and hubs no later than seven years after the date since installation (DSI). The DSI will begin at initial installation after the most recent MI or initial installation after production. Guidance on the inspections can be found in the applicable Hamilton Sundstrand Corporation models/manuals 14RF-9/P5186, revision 12, January 20, 2012; 14RF-21/P5189, revision 8, February 20, 2013; 14SF-5/P5188, revision 10, dated January 14, 2013; 14SF-7/P5185, revision 13, dated December 13, 2011; 14SF-11E/P5207, revision 2, dated June 28, 2012; and 568F-1/P5206, revision 9, dated February 22, 2013.
For Hamilton Standard Division propeller models 6/5500/F and 24PF and Hamilton Sundstrand Corporation propeller models 14RF-19, 14RF-37, 14SF-11, 14SF-15, 14SF-23, 14SF-17, 14SF-19, 247F-1, 247F-1E, 247F-3, 568F-1, 568F-5, and 568F-7, that do not have an approved update to the ALS, within one year after the effective date of this AD, perform an MI on the blades and hubs no later than seven years after the DSI. The DSI will begin at initial installation after the most recent MI or initial installation after production. Guidance on the inspections can be found in the applicable Hamilton Standard Division models/manuals 6/5500/F/P5190 and 24PF/61-12-01, and Hamilton Sundstrand Corporation models/manuals 14RF-19/P5199, 14RF-37/P5209, 14SF-11/P5196, 14SF-15/P5197, 14SF-23/P5197, 14SF-17/P5198, 14SF-19/P5198, 247F-1/P4202, 247F-1E/P5204, 247F-3/P5205, 568F-1/P5214, 568F-5/P5203, and 568F-7/P5211.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
Propellers
