r Operations in Reduced Vertical Airspace via: RK- I thru RK-I 17 and RK-119 thru F1K-139, Hawker Beechcraft Service Bulletin No. 34.3431. RK-I 18, RK-I40 thru RK-224, Hawker Becchcraft Service Bulletin Nos. 34.3228 and 34-3431. RK-225 thru RK-299, Hawker Beechcraft Service Bulletin No. 34-3431. RK-30