APPENDIX B: FOCUSED INTERVIEW RESULTS
S
APPENDIX C: FLIGHT CREW SCRIPTS
KEY
Text in Bold = standard or other procedures
TEXT IN CAPS = agent transmitting communication
“ text in quotes” = communication content
[text in brackets] = variable in process
x = aircraft being analyzed
y = other aircraft than aircraft analyzed
z = (to be specified in controller script) maximum distance between aircraft on different air routes for which the controller decides to forward a PIREP (e.g., close to a route intersection)
XXO = altitude of aircraft being analyzed
YYO = altitude of other aircraft
Text in Italics = action item
Text in Bold Following Arrow
= reference to procedure mentioned earlier
Text in regular font = note of the author referring to appendices
Note: Conditions of turbulence and chop (i.e., light, moderate, and severe turbulence as well as light, moderate, and severe chop) have been lumped into LIGHT, MODERATE, and SEVERE conditions, as indicated in the results of the focused interview with an experienced pilot. Also, based on the focused interview results, the most conservative flight crew response was used to determine flight crew action in the various conditions considered.
Standard Procedures
Sector Entry (Priority: 3, Interruptable: Yes)
FLIGHT CREW: “Good afternoon Boston Center, [call sign x] flight level [XXO]”; IF no response within 30 seconds, THEN repeat
CONTROLLER: “Good afternoon [call sign x]”
Flight Crew Issue PIREP (Priority: 2, Interruptable: Yes)
FLIGHT CREW: “Boston Center, [call sign x], we are experiencing LIGHT/MODERATE/SEVERE TURBULENCE”
Flight Crew response to proposed speed clearance (Priority: 3, Interruptable: Yes)
Initiated by: Controller
Receive [proposed speed clearance]
IF M0.60 < [proposed speed clearance] < M0.80
THEN FLIGHT CREW: “[call sign x], can accept [proposed speed clearance]”
ELSE FLIGHT CREW: “[call sign x] unable to accept that speed”
Flight Crew response to speed clearance (Priority: 2, Interruptable: No)
Initiated by: Controller
Receive [speed clearance] from ATC
FLIGHT CREW: “Roger, [call sign x], reduce speed to [speed clearance]”
Flight crew reduces speed by pulling back on throttle levers and observing airspeed until [observed speed] = [speed clearance]
Flight Crew response to speed query (Priority: 3, Interruptable: Yes)
Initiated by: Controller
Receive speed query from controller
Flight crew scans airspeed indicator to obtain current speed
FLIGHT CREW: “[call sign x], [current speed]”
Flight Crew CAT Information Response (Priority: 1, Interruptable: No)
Flight crew turns on seat-belt sign, if not already on
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