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Flight crew of an large transport failed to follow the required noise abatement track during departure.
| Attributes | |
| ACN | 322710 |
| Time | |
| Date | 199512 |
| Day | Sun |
| Local Time Of Day | 0001 To 0600 |
| Place | |
| Locale Reference | airport : sea |
| State Reference | WA |
| Altitude | msl bound lower : 2000 msl bound upper : 2000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | tracon : sea tower : ord |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | departure : noise abatement departure other departure sid : sid |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | other other : other pilot : instrument pilot : atp |
| Experience | flight time last 90 days : 200 flight time total : 18000 flight time type : 2650 |
| ASRS Report | 322710 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial |
| Events | |
| Anomaly | non adherence : clearance non adherence : published procedure other anomaly other other spatial deviation |
| Independent Detector | other flight crewa |
| Resolutory Action | none taken : insufficient time |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
On takeoff from sea, aircraft track may have exceeded the noise abatement corridor limits. Flight director commands from the FMS were initially used. However, VOR raw data indicated a 1.5 DOT deviation from centerline. A correction was immediately applied to center the VOR. The corridor is 2300 ft either side of the 158 degree radial and this distance may have been exceeded before the correction was made.
Original NASA ASRS Text
Title: FLC OF AN LGT FAILED TO FOLLOW THE REQUIRED NOISE ABATEMENT TRACK DURING DEP.
Narrative: ON TKOF FROM SEA, ACFT TRACK MAY HAVE EXCEEDED THE NOISE ABATEMENT CORRIDOR LIMITS. FLT DIRECTOR COMMANDS FROM THE FMS WERE INITIALLY USED. HOWEVER, VOR RAW DATA INDICATED A 1.5 DOT DEV FROM CTRLINE. A CORRECTION WAS IMMEDIATELY APPLIED TO CTR THE VOR. THE CORRIDOR IS 2300 FT EITHER SIDE OF THE 158 DEG RADIAL AND THIS DISTANCE MAY HAVE BEEN EXCEEDED BEFORE THE CORRECTION WAS MADE.
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.