Controller evaluates requested (altitude) maneuver
Altitude Change Clearance
IF controller is unable to comply with altitude change request AND aircraft continues to experience CAT or CAT warnings THEN wait 60 seconds; return to Flight Crew Inquiry part of sequence
MODERATE Turbulence Encounter
Initiated by: Aircraft experiences MODERATE turbulence.
Modified Flight Crew CAT Information Response:
Flight crew turns on seat-belt sign, if not already on
Flight crew picks up intercom and tells flight attendants to get seated
Flight crew reduces speed to turbulence penetration Mach number by pulling back on throttle levers, if speed greater than 464 knots
FLIGHT CREW: “Boston Center, this is [call sign x]. We started experiencing MODERATE turbulence
Flight Crew Report for Mach Number Change, if speed greater than 464 kts
Controller evaluates advised (speed) maneuver
Flight Crew Inquiry; IF no response within 15 seconds THEN repeat
Controller Response to request for ride report
Flight Crew Request for Altitude Change to smoother ride altitude if known, or else to either 4,000 feet above (preferably), or 4,000 feet below; IF no response within 10 seconds THEN repeat
Controller evaluates requested (altitude) maneuver
Altitude Change Clearance
IF controller is unable to comply with altitude change request AND aircraft continues to experience CAT or CAT warnings THEN wait 60 seconds; return to Flight Crew Inquiry part of sequence
SEVERE Turbulence Encounter
Initiated by: Aircraft experiences SEVERE turbulence.
Flight crew turns on seat-belt sign, if not already on
Flight crew picks up intercom and tells flight attendants to get seated, if not already done
Flight crew reduces speed to turbulence penetration Mach number by pulling back on throttle levers, if speed is greater than 460 knots
Flight Crew Transition to Manual Control:
Flight crew places hand on control stick, disconnects auto-pilot by pressing the “auto-pilot disengage” button on the control stick, attempts to maintain straight-and-level flight at assigned heading and altitude by manually controlling stick and rudders and monitoring the primary flight display. Despite such efforts, flight crew notices from the altimeter that the aircraft is descending at a rate of 200 feet-per-minute.
FLIGHT CREW: “Boston Center, this is [call sign x]. We are experiencing SEVERE turbulence; we need to go somewhere better!”; IF no response within 3 seconds THEN repeat
Controller evaluates requested (altitude) maneuver
Modified Altitude Change Clearance
IF controller is unable to comply with altitude change request AND aircraft continues to experience CAT or CAT warnings THEN wait 60 seconds; return to Flight Crew Inquiry part of sequence
PIREP and “Party-Line” Information
CAT PIREPs at Own Altitude
Initiated by: Other aircraft at own altitude on same route or [z] nm from own route has provided Flight Crew Report of Mach Number Change
or
Other aircraft at own altitude on same route or [z] nm from own route has provided Flight Crew Inquiry
Controller PIREP Relay
Modified Flight Crew CAT Information Response:
Flight crew turns on seat-belt sign, if not already on (except in LIGHT)
Flight crew picks up intercom and tells flight attendants to get seated, if not already done (except in LIGHT)
Flight crew reduces speed to turbulence penetration Mach number by pulling back on throttle levers, if speed greater than 464 knots (except in LIGHT)
Flight Crew Report for Mach Number Change, if speed greater than 464 knots (except in LIGHT)
Controller evaluates advised (speed) maneuver 中國航空網 www.k6050.com 航空翻譯 www.aviation.cn 本文鏈接地址：DEVELOPMENT OF FAST-TIME SIMULATION TECHNIQUES(46)
