History:
FF 19-10-42 R-RH Cv IX M61 R-R 19-10-42 AAEE 28-10-42 trls with M61 with lower blower peak 5-11-42 Merlin RM9SM (M70) install 12-42 trls with new eng and MkXII rud (for VIII VII and IX prodn a/c) Oil cool and rad trls 5-12-42 comparison trls with BS543 (M66 RM10SM) and BS551 (M70 RM11SM) high and low alt Merlins 1-43 Damaged during trls GAL 28-1-43 for repairs 47MU 5-4-43 'R.686' 24-4-43 Casablanca 17-5-43 Middle East 1-7-43 213Sq 'AK-G' RHAF 30-1-47
* for acronyms please see source:
Spitfire Production