B757 crew slowed aircraft speed because of turbulence.

Attributes
ACN	437374
Time
Date	199905
Day	Tue
Local Time Of Day	1801 To 2400
Place
Locale Reference	intersection : sword
State Reference	FO
Altitude	msl single value : 28000
Environment
Flight Conditions	Mixed
Weather Elements	Turbulence
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zhu.artcc
Operator	common carrier : air carrier
Make Model Name	B757-200
Operating Under FAR Part	Part 121
Flight Phase	cruise : level
Route In Use	enroute airway : a509.airway
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time total : 20000
ASRS Report	437374
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp pilot : flight engineer pilot : cfi
Experience	flight time last 90 days : 1500 flight time total : 6000 flight time type : 150
ASRS Report	437230
Events
Anomaly	inflight encounter : turbulence inflight encounter : weather non adherence : clearance non adherence : published procedure non adherence : far other anomaly
Independent Detector	other controllera
Resolutory Action	controller : issued new clearance
Supplementary
Problem Areas	Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

While proceeding direct minow at FL350, ride got choppy. Requested descent to FL310. Still choppy, requested descent to FL280 and it was also choppy. Started to slow for chop while under ZMA radar control. Approximately 5 mins later, ZMA called and said radar service terminated and to report minow this frequency. 4 mins prior to minow, ZMA asked if we were at minow intersection. We advised ZMA we will be at minow in 4 mins. At minow, we reported minow to ZMA. ZMA came back, 'roger, over minow, now call new york radio 130.7.' called new york and reported minow, eliom and sword. After approximately 15 mins, new york called back and questioned the minow estimate. Then they said stand by for phone patch with ZHU. ZHU asked our TAS and mach speed then said they were planning their separation on flight plan speed. After landing mex on phone conversation with ZHU and ZMA, they advised there was not a loss of aircraft separation.

Original NASA ASRS Text

Title: B757 CREW SLOWED ACFT SPD BECAUSE OF TURB.

Narrative: WHILE PROCEEDING DIRECT MINOW AT FL350, RIDE GOT CHOPPY. REQUESTED DSCNT TO FL310. STILL CHOPPY, REQUESTED DSCNT TO FL280 AND IT WAS ALSO CHOPPY. STARTED TO SLOW FOR CHOP WHILE UNDER ZMA RADAR CTL. APPROX 5 MINS LATER, ZMA CALLED AND SAID RADAR SVC TERMINATED AND TO RPT MINOW THIS FREQ. 4 MINS PRIOR TO MINOW, ZMA ASKED IF WE WERE AT MINOW INTXN. WE ADVISED ZMA WE WILL BE AT MINOW IN 4 MINS. AT MINOW, WE RPTED MINOW TO ZMA. ZMA CAME BACK, 'ROGER, OVER MINOW, NOW CALL NEW YORK RADIO 130.7.' CALLED NEW YORK AND RPTED MINOW, ELIOM AND SWORD. AFTER APPROX 15 MINS, NEW YORK CALLED BACK AND QUESTIONED THE MINOW ESTIMATE. THEN THEY SAID STAND BY FOR PHONE PATCH WITH ZHU. ZHU ASKED OUR TAS AND MACH SPD THEN SAID THEY WERE PLANNING THEIR SEPARATION ON FLT PLAN SPD. AFTER LNDG MEX ON PHONE CONVERSATION WITH ZHU AND ZMA, THEY ADVISED THERE WAS NOT A LOSS OF ACFT SEPARATION.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.