<< >> NASA ASRS Report 865690, December 2009

A B767's autopilot tripped off after takeoff in IMC heavy rain. The aircraft diverged from the sfo 090 radial and the crew was correcting back when TRACON queried the aircraft's departure routing.

Attributes
ACN	865690
Time
Date	200912
Local Time Of Day	1201-1800
Place
Locale Reference	NCT.TRACON
State Reference	CA
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Make Model Name	B767-200
Operating Under FAR Part	Part 121
Flight Phase	Climb
Route In Use	SID DUMB6
Flight Plan	IFR
Component
Aircraft Component	Autoflight System
Person 1
Function	Pilot Not Flying Captain
Person 2
Function	First Officer Pilot Flying
Events
Anomaly	Aircraft Equipment Problem Less Severe Deviation - Procedural Clearance Deviation - Track / Heading All Types Inflight Event / Encounter Weather / Turbulence

Narrative:

Departing sfo flight on runway 10R with dumbarton six departure lin transition; winds out of the south at 11 KTS. Climbing through 1000 ft autopilot kicked off in IMC weather. Turned approximately 20 degrees left of course. Heading 070 degrees. I told first officer to correct back to the right to pickup the sfo 090 degree radial when norcal departure called asking if we were flying the dumbarton six departure. I stated we were flying the 090 degree radial off of sfo norcal preceded to give us direct lin VOR and continued the climb out in heavy rain showers till 7000 ft into VMC weather. Remainder of flight uneventful.

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Original NASA ASRS Text

Title: A B767's autopilot tripped off after takeoff in IMC heavy rain. The aircraft diverged from the SFO 090 radial and the crew was correcting back when TRACON queried the aircraft's departure routing.

Narrative: Departing SFO flight on Runway 10R with Dumbarton Six Departure LIN transition; winds out of the south at 11 KTS. Climbing through 1000 FT autopilot kicked off in IMC weather. Turned approximately 20 degrees left of course. Heading 070 degrees. I told First Officer to correct back to the right to pickup the SFO 090 degree radial when NORCAL Departure called asking if we were flying the Dumbarton Six Departure. I stated we were flying the 090 degree radial off of SFO NORCAL preceded to give us Direct LIN VOR and continued the climb out in heavy rain showers till 7000 FT into VMC weather. Remainder of flight uneventful.

Data retrieved from NASA's ASRS site as of April 2012 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.