<< >> NASA ASRS Report 301150, April 1995

Deviation from clearance - flight crew asked and were denied a route away from thunderstorms so they flew around some of them anyway without declaring an emergency.

Attributes
ACN	301150
Time
Date	199504
Day	Tue
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : iah
State Reference	TX
Altitude	msl bound lower : 4000 msl bound upper : 4000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : iah
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	climbout : initial climbout : intermediate altitude cruise other
Route In Use	enroute : on vectors
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp pilot : cfi
Experience	flight time last 90 days : 200 flight time total : 8000 flight time type : 200
ASRS Report	301150
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	inflight encounter : weather non adherence : clearance non adherence : published procedure other anomaly other other spatial deviation
Independent Detector	other flight crewa
Resolutory Action	controller : issued new clearance other other
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation other

Narrative:

Takeoff from runway 14L at iah. Thunderstorms in vicinity. Requested a right turn after takeoff with a climb to the west. This was denied by the tower. We then made the takeoff with a right turn. At 4000 ft about 15 mi north of the airport we encountered moderate to severe continuous turbulence. From a northbound heading we requested an immediate 270 degree heading. We were denied due to arrival traffic. We told ATC we would take any heading to the south or the west. If they could not comply we told them we would declare an emergency to leave turbulence. We were given a 220 degree heading 'for the airport.' we were asked if we declared an emergency, we said no. We were asked if we wanted to return to the airport - we said no and were given a 300 degree heading. We were in visual conditions and were never close to another aircraft.

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Original NASA ASRS Text

Title: DEV FROM CLRNC - FLC ASKED AND WERE DENIED A RTE AWAY FROM TSTMS SO THEY FLEW AROUND SOME OF THEM ANYWAY WITHOUT DECLARING AN EMER.

Narrative: TKOF FROM RWY 14L AT IAH. TSTMS IN VICINITY. REQUESTED A R TURN AFTER TKOF WITH A CLB TO THE W. THIS WAS DENIED BY THE TWR. WE THEN MADE THE TKOF WITH A R TURN. AT 4000 FT ABOUT 15 MI N OF THE ARPT WE ENCOUNTERED MODERATE TO SEVERE CONTINUOUS TURB. FROM A NBOUND HDG WE REQUESTED AN IMMEDIATE 270 DEG HDG. WE WERE DENIED DUE TO ARR TFC. WE TOLD ATC WE WOULD TAKE ANY HDG TO THE S OR THE W. IF THEY COULD NOT COMPLY WE TOLD THEM WE WOULD DECLARE AN EMER TO LEAVE TURB. WE WERE GIVEN A 220 DEG HDG 'FOR THE ARPT.' WE WERE ASKED IF WE DECLARED AN EMER, WE SAID NO. WE WERE ASKED IF WE WANTED TO RETURN TO THE ARPT - WE SAID NO AND WERE GIVEN A 300 DEG HDG. WE WERE IN VISUAL CONDITIONS AND WERE NEVER CLOSE TO ANOTHER ACFT.

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.