A B757 captain used his emergency authority/authorized to avoid WX en route to bda in oceanic airspa...

Attributes
ACN	438584
Time
Date	199905
Day	Thu
Local Time Of Day	0601 To 1200
Place
Locale Reference	intersection : huber
State Reference	FO
Altitude	msl single value : 29000
Aircraft 1
Controlling Facilities	artcc : zny.artcc
Operator	common carrier : air carrier
Make Model Name	B757 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	cruise : level
Route In Use	enroute : other oceanic
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
ASRS Report	438584
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument pilot : multi engine
Events
Anomaly	inflight encounter : weather non adherence : clearance other spatial deviation
Independent Detector	other flight crewa other flight crewb
Resolutory Action	controller : issued new clearance flight crew : took precautionary avoidance action
Supplementary
Problem Areas	Flight Crew Human Performance Weather
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Captain's emergency authority/authorized for WX deviation. Flying toward targa and bermuda encountered a heavy line of thunderstorms. Requested and received clearance for a 30 NM deviation to the west of course. Requested and received clearance for a 60 NM deviation. Requested clearance to continue deviation to 90 NM as we approached the line of WX. Did not receive the clearance for awhile. Used captain's emergency authority/authorized to continue around thunderstorms. Did periodic broadcasts on guard-monitored TCASII, and turned on all lights. Eventually received clearance to deviate 90 NM. Rest of flight was uneventful, saw no other aircraft on TCASII during deviation, nor did anyone answer us on guard frequency.

Original NASA ASRS Text

Title: A B757 CAPT USED HIS EMER AUTH TO AVOID WX ENRTE TO BDA IN OCEANIC AIRSPACE.

Narrative: CAPT'S EMER AUTH FOR WX DEV. FLYING TOWARD TARGA AND BERMUDA ENCOUNTERED A HVY LINE OF TSTMS. REQUESTED AND RECEIVED CLRNC FOR A 30 NM DEV TO THE W OF COURSE. REQUESTED AND RECEIVED CLRNC FOR A 60 NM DEV. REQUESTED CLRNC TO CONTINUE DEV TO 90 NM AS WE APCHED THE LINE OF WX. DID NOT RECEIVE THE CLRNC FOR AWHILE. USED CAPT'S EMER AUTH TO CONTINUE AROUND TSTMS. DID PERIODIC BROADCASTS ON GUARD-MONITORED TCASII, AND TURNED ON ALL LIGHTS. EVENTUALLY RECEIVED CLRNC TO DEVIATE 90 NM. REST OF FLT WAS UNEVENTFUL, SAW NO OTHER ACFT ON TCASII DURING DEV, NOR DID ANYONE ANSWER US ON GUARD FREQ.

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.

A B757 captain used his emergency authority/authorized to avoid WX en route to bda in oceanic airspace.