From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Blueprint of a rear propeller shaft coupling flange with a correction instruction.
| Identifier | ExFiles\Box 2\1\ B002_136 137-page20 | |
| Date | 6th January 1933 guessed | |
| DRILL TO CORRECT UNBALANCE COUPLING FLANGE - PROP SHAFT - REAR | ||