Citation II S2/Bravo (C550)
Flight Crew Sea; Flight Crew Multiengine; Flight Crew Instrument; Flight Crew Glider; Flight Crew Air Transport Pilot (ATP)
Flight Crew Last 90 Days 85; Flight Crew Total 27000; Flight Crew Type 350
Communication Breakdown
ATC Issue All Types; Deviation - Speed All Types; Deviation / Discrepancy - Procedural Published Material / Policy; Inflight Event / Encounter Weather / Turbulence
Air Traffic Control Issued Advisory / Alert; Flight Crew Took Evasive Action
Weather; Human Factors
Received clearance from LA Center to deviate for weather on ADDEL1 arrival into HND. ATC was very busy seemed to be operating three different frequencies (2 VHF and one UHF) at the same time. We were given clearance to deviate south of course and off the arrival for weather and before we were handed off to Las Vegas Approach we informed LA Center that we would have to slow down for turbulence.As we were deviating off course from the arrival and we had informed LA Center of the problem I thought there would be no issue with us slowing down for turbulence; but Las Vegas Approach felt we should have maintained 250 knots even though we were off the arrival course.As this speed in turbulence would compromise the safety of the Citation Bravo I was flying with the existing turbulence I flew a slower and safer speed (225 knots) south of the arrival corridor and clear of clouds on our arrival into Las Vegas.When we first came on frequency with Las Vegas approach I should have informed them of the fact that we were slower than the posted speed on the arrival due to turbulence in case the information was not passed on from LA Center.
CE550 Captain requests weather deviation on the ADDEL1 arrival to HND and a speed of 225 knots for turbulence from ZLA; which is approved before switching to LAS Approach. The speed information is apparently not passed to Approach by ZLA and the Approach Controller is not happy.