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B767-300ER flight crew failed to follow departure heading during initial climb due to misinterp of the departure clearance.
| Attributes | |
| ACN | 518886 |
| Time | |
| Date | 200107 |
| Day | Tue |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : lebl.airport |
| State Reference | FO |
| Altitude | msl single value : 4000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B767-300 and 300 ER |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : takeoff |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : relief pilot |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 200 flight time total : 3500 flight time type : 300 |
| ASRS Report | 518886 |
| Person 2 | |
| Affiliation | company : air taxi |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 150 flight time total : 5000 flight time type : 2000 |
| ASRS Report | 518890 |
| Events | |
| Anomaly | non adherence : clearance other anomaly other other spatial deviation |
| Independent Detector | atc equipment other atc equipment : radar other controllera |
| Resolutory Action | none taken : detected after the fact |
| Consequence | faa : reviewed incident with flight crew |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance ATC Human Performance |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
On departure, we were given 'fly heading 240 degrees to 4000 ft.' the controller then stated 'proceed as cleared.' LNAV was engaged and we followed the SID (lobar 10). We were called about 25 NM down the road, and told we were supposed to maintain the 240 degree heading until told otherwise. Contributing factors: we departed on runway 25. The SID calls for you to intercept 240 degree radial after 500 ft, so you use a heading of about 240 degrees to perform that maneuver. So, when the controller stated 'proceed as cleared,' there was a misunderstanding as to what we were cleared to do. No one in the cockpit gave it a second thought until we were called about the mistake. It would help if the controller said proceed on heading 240 degrees before handing us off to the next controller.
Original NASA ASRS Text
Title: B767-300ER FLC FAILED TO FOLLOW DEP HDG DURING INITIAL CLB DUE TO MISINTERP OF THE DEP CLRNC.
Narrative: ON DEP, WE WERE GIVEN 'FLY HDG 240 DEGS TO 4000 FT.' THE CTLR THEN STATED 'PROCEED AS CLRED.' LNAV WAS ENGAGED AND WE FOLLOWED THE SID (LOBAR 10). WE WERE CALLED ABOUT 25 NM DOWN THE ROAD, AND TOLD WE WERE SUPPOSED TO MAINTAIN THE 240 DEG HDG UNTIL TOLD OTHERWISE. CONTRIBUTING FACTORS: WE DEPARTED ON RWY 25. THE SID CALLS FOR YOU TO INTERCEPT 240 DEG RADIAL AFTER 500 FT, SO YOU USE A HDG OF ABOUT 240 DEGS TO PERFORM THAT MANEUVER. SO, WHEN THE CTLR STATED 'PROCEED AS CLRED,' THERE WAS A MISUNDERSTANDING AS TO WHAT WE WERE CLRED TO DO. NO ONE IN THE COCKPIT GAVE IT A SECOND THOUGHT UNTIL WE WERE CALLED ABOUT THE MISTAKE. IT WOULD HELP IF THE CTLR SAID PROCEED ON HDG 240 DEGS BEFORE HANDING US OFF TO THE NEXT CTLR.
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.