Quick view Add to Cart Spitfire I Airframe Modification in Conjunction with Mod No. Merlin 122 Pressure Reducing Valve in Fuel System Provision Document Part Number: AP 1565A-P.4-W Number of pages: 1Part Number: AP 1565A-P.4-WRevision Date: 30-June-1940Description: Mods 59 MSRP: Was: Now: $15.00