Medium large transport must make WX deviation without ATC clearance due frequency congestion.

Attributes
ACN	274617
Time
Date	199406
Day	Tue
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : pns
State Reference	FL
Altitude	msl bound lower : 14000 msl bound upper : 14375
Environment
Flight Conditions	Mixed
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : pns
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	climbout : intermediate altitude
Route In Use	enroute : on vectors
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : instrument pilot : flight engineer pilot : commercial pilot : atp
Experience	flight time last 90 days : 150 flight time total : 6000 flight time type : 800
ASRS Report	274617
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp pilot : commercial pilot : instrument
Events
Anomaly	altitude deviation : overshoot inflight encounter : weather other anomaly other other spatial deviation
Independent Detector	other flight crewa
Resolutory Action	flight crew : took evasive action
Consequence	faa : reviewed incident with flight crew
Supplementary
Primary Problem	Weather
Air Traffic Incident	Pilot Deviation

Narrative:

Problem arose because strong storm cells were in departure route. They were grouped such that 2 rtes were possible, one better than the other. ATC gave clearance to 14000 ft and a heading. Problem arose because heading was into the worst possible WX -- large numerous cells. Second problem arose when a lengthy conversation broke out over radios between controller and another aircraft. We were rapidly approaching cells and waiting for a break in the conversation -- to no avail. I was forced into a hard 45 degree banking turn, autoplt was kicked off by turbulence and aircraft deviated due to cell updraft. I believe I recovered at about 14375 ft and returned to 14000 ft. Deviation was momentary and we turned away from cells as we once again were able to reach ATC. He gave new clearance. ATC controller was superior, however the initial turn was bad. Not sure he was able to paint the cells or at least not paint them well.

Original NASA ASRS Text

Title: MLG MUST MAKE WX DEV WITHOUT ATC CLRNC DUE FREQ CONGESTION.

Narrative: PROB AROSE BECAUSE STRONG STORM CELLS WERE IN DEP RTE. THEY WERE GROUPED SUCH THAT 2 RTES WERE POSSIBLE, ONE BETTER THAN THE OTHER. ATC GAVE CLRNC TO 14000 FT AND A HDG. PROB AROSE BECAUSE HDG WAS INTO THE WORST POSSIBLE WX -- LARGE NUMEROUS CELLS. SECOND PROB AROSE WHEN A LENGTHY CONVERSATION BROKE OUT OVER RADIOS BTWN CTLR AND ANOTHER ACFT. WE WERE RAPIDLY APCHING CELLS AND WAITING FOR A BREAK IN THE CONVERSATION -- TO NO AVAIL. I WAS FORCED INTO A HARD 45 DEG BANKING TURN, AUTOPLT WAS KICKED OFF BY TURB AND ACFT DEVIATED DUE TO CELL UPDRAFT. I BELIEVE I RECOVERED AT ABOUT 14375 FT AND RETURNED TO 14000 FT. DEV WAS MOMENTARY AND WE TURNED AWAY FROM CELLS AS WE ONCE AGAIN WERE ABLE TO REACH ATC. HE GAVE NEW CLRNC. ATC CTLR WAS SUPERIOR, HOWEVER THE INITIAL TURN WAS BAD. NOT SURE HE WAS ABLE TO PAINT THE CELLS OR AT LEAST NOT PAINT THEM WELL.

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.