For specific information on TBO requirements for your propeller, click on the appropriate link below.

• HARTZELL - HC-SL-61-61Y Propeller Overhaul Periods and Service Life Limits for Hartzell Propellers, Governors, and Propeller Damper Assemblies

• MCCAULEY - S/B 137AE Revised Time Between Overhaul (TBO) Specifications

• HAMILTON SUNDSTRAND - Propeller Major Inspection Intervals
  • 14SF-61-35 (14SF-15, 14SF-23)
  • 14SF-61-34 (14SF-11)
  • 24PF-61-1022 (24PF-305, 24PF-309)

• MT PROPELLER - S/B 1AH TBO of Variable Pitch Propellers

• SENSENICH - S/B R-17 Increase of TBO from 1000 hrs to 2000 hrs

• WOODWARD - S/B 33580M Time Between Overhaul Periods (TBO)

• TRANSPORT CANADA CARS - 625 Appendix C

While we will do our best to keep these links current for you to reference, it remains your responsibility to maintain your aircraft to current standards. If you have any questions, or require further information, please give us a call at 1-877-870-PROP (7767)