UR K
Propellers
UR K1 Deleted
Deleted - due to being superseded by a new UR W24 "Cast copper alloy propellers"
UR K2 Deleted
Deleted - due to being superseded by a new UR W24 "Cast copper alloy propellers"
UR K3 Corr2 CLN
UR K3 Keyless Fitting of Propellers without Ice Strengthening - Corr.2 June 1998