History:
HPA 28-2-45 makers trls CRD AID del report held for CRO G101 install with 3-stage blower and 25lb boost. This pressure had been tried on the Merlin code name 'Basta' Cv to FXVI 6MU 27-2-47 speeds of over 494mph achieved. Several eng fail and force-landing (seven in all) Final landing at Chilbolton u/c oleos forced through wings. 49MU written off 29-3-49 when dropped from salvage crane
* for acronyms please see source:
Spitfire Production