A B777 deviated 60 NM from the assigned pacific track avoiding thunderstorm when only cleared for a ...

Attributes
ACN	702012
Time
Date	200606
Local Time Of Day	1801 To 2400
Place
Locale Reference	atc facility : rjtg.artcc
State Reference	FO
Altitude	msl single value : 35000
Environment
Weather Elements	Thunderstorm
Aircraft 1
Controlling Facilities	artcc : rjtg.artcc
Operator	common carrier : air carrier
Make Model Name	B777 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	cruise : level
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : relief pilot
ASRS Report	702021
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Events
Anomaly	inflight encounter : weather non adherence : clearance non adherence : company policies non adherence : far other spatial deviation
Independent Detector	other flight crewa
Resolutory Action	none taken : anomaly accepted
Supplementary
Problem Areas	Flight Crew Human Performance Weather
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

When I returned from my break we were +/-60 mi off course to avoid thunderstorms. We were cleared to offset 25 mi north according to the captain.

Original NASA ASRS Text

Title: A B777 DEVIATED 60 NM FROM THE ASSIGNED PACIFIC TRACK AVOIDING TSTM WHEN ONLY CLRED FOR A 25 NM OFFSET.

Narrative: WHEN I RETURNED FROM MY BREAK WE WERE +/-60 MI OFF COURSE TO AVOID TSTMS. WE WERE CLRED TO OFFSET 25 MI N ACCORDING TO THE CAPT.

Data retrieved from NASA's ASRS site as of January 2009 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 B777 deviated 60 NM from the assigned pacific track avoiding thunderstorm when only cleared for a 25 NM offset.