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Flight crew of a B737 failed to follow the assigned SID due to being unfamiliar with the depiction of a new SID. ATC intervened to bring them onto the correct track heading.
| Attributes | |
| ACN | 377975 |
| Time | |
| Date | 199708 |
| Day | Tue |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : ewr |
| State Reference | NJ |
| Altitude | msl bound lower : 5000 msl bound upper : 5000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : n90 |
| Operator | common carrier : air carrier |
| Make Model Name | B737 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | departure other departure sid : sid |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 150 flight time total : 10000 flight time type : 3500 |
| ASRS Report | 377975 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | non adherence : clearance non adherence : published procedure other spatial deviation |
| Independent Detector | other controllera |
| Resolutory Action | other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Arthur kill SID, new SID as of aug/xx/97. 11 days ago, first time flying this departure, we did not intercept the sbj 100 degree radial from the 250 degree heading. No conflict that we know of. The depiction for biggy intersection is vague. The transitions in the description part has 'biggy expect vectors via sbj VOR' but in another part says 'parke, lanna, biggy, intercept sbj R-100.' both first officer and myself missed the intercept wording, no plan view to help show departure to sbj. Sids should not have conflicting instructions. Should not say 'expect' in one part and 'intercept' in another. A thorough reading of this SID would still have left us confused, but at least we could have asked for clarification from departure. Fatigue was probably our biggest contributing factor for not catching this screwed up SID.
Original NASA ASRS Text
Title: FLC OF A B737 FAILED TO FOLLOW THE ASSIGNED SID DUE TO BEING UNFAMILIAR WITH THE DEPICTION OF A NEW SID. ATC INTERVENED TO BRING THEM ONTO THE CORRECT TRACK HEADING.
Narrative: ARTHUR KILL SID, NEW SID AS OF AUG/XX/97. 11 DAYS AGO, FIRST TIME FLYING THIS DEP, WE DID NOT INTERCEPT THE SBJ 100 DEG RADIAL FROM THE 250 DEG HDG. NO CONFLICT THAT WE KNOW OF. THE DEPICTION FOR BIGGY INTXN IS VAGUE. THE TRANSITIONS IN THE DESCRIPTION PART HAS 'BIGGY EXPECT VECTORS VIA SBJ VOR' BUT IN ANOTHER PART SAYS 'PARKE, LANNA, BIGGY, INTERCEPT SBJ R-100.' BOTH FO AND MYSELF MISSED THE INTERCEPT WORDING, NO PLAN VIEW TO HELP SHOW DEP TO SBJ. SIDS SHOULD NOT HAVE CONFLICTING INSTRUCTIONS. SHOULD NOT SAY 'EXPECT' IN ONE PART AND 'INTERCEPT' IN ANOTHER. A THOROUGH READING OF THIS SID WOULD STILL HAVE LEFT US CONFUSED, BUT AT LEAST WE COULD HAVE ASKED FOR CLARIFICATION FROM DEP. FATIGUE WAS PROBABLY OUR BIGGEST CONTRIBUTING FACTOR FOR NOT CATCHING THIS SCREWED UP SID.
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.