Details
- Number of pages: 4
- Part Number: No. 104
- Revision Date: 14-Feb-1946
- Description: Ref 491 - Approval of 5B1 Blades on Lycoming R-680 and Continental R-670 Engines, Ref 492 - Vibration Restriction on DC-4 Aircraft, Ref 493 - Broken Cam Rollers in Hydromatic Propellers