Air Ministry Official Notices: Instructions to Aeroplane Owners and Ground Engineers on Essential Modifications

Abstract

No. 14 of the year 1934. Owing to rapid wear of the old pattern valve‐rocker adjusting screw, Part No. 822, on Pobjoy “R” type engines, there is a danger of the valve clearance increasing sufficiently during flight to allow the rocker to foul the valve‐spring cap. New type screws, Part No. 822/1, which are harder and have the striking pad thickened up, must, therefore, be fitted not later than the next top overhaul.

Citation

(1934), "Air Ministry Official Notices: Instructions to Aeroplane Owners and Ground Engineers on Essential Modifications", Aircraft Engineering and Aerospace Technology, Vol. 6 No. 8, pp. 227-227. https://doi.org/10.1108/eb029837