Air carrier crew misses heading change on STAR route in sea airspace.

Attributes
ACN	404350
Time
Date	199806
Day	Fri
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : sea
State Reference	WA
Altitude	msl bound lower : 10000 msl bound upper : 10000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : s46 tower : cmh
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	descent : approach
Route In Use	arrival other
Flight Plan	VFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 300 flight time total : 13000 flight time type : 10000
ASRS Report	404350
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	non adherence : clearance other spatial deviation
Independent Detector	other controllera other flight crewa
Resolutory Action	none taken : detected after the fact
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

First officer did not make the turn to 340 degree heading at 8 DME, and I did not catch it until 6 DME.

Original NASA ASRS Text

Title: ACR CREW MISSES HDG CHANGE ON STAR RTE IN SEA AIRSPACE.

Narrative: FO DID NOT MAKE THE TURN TO 340 DEG HDG AT 8 DME, AND I DID NOT CATCH IT UNTIL 6 DME.

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.