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).
Instruction standardizing the altered position of the water pump drain cock for 'Eagle' engines.
| Identifier | ExFiles\Box 37\2\ scan 113 | |
| Date | 7th September 1919 | |
| To EFC. from EH. EH/AT7.9.19 X.3307.-WATER PUMP WITH ALTERED POSITION OF DRAIN COCK. This modification has been instructed as Standard on "Eagle" engines. EH. | ||