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Heading track position deviation when flight crew vigilance fails to detect amended clearance route change on their pre departure clearance.
| Attributes | |
| ACN | 247752 |
| Time | |
| Date | 199308 |
| Day | Sun |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : baf |
| State Reference | MA |
| Altitude | msl bound lower : 16000 msl bound upper : 16000 |
| Environment | |
| Flight Conditions | Mixed |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Flight Phase | cruise other |
| Route In Use | enroute airway : zbw |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : commercial pilot : instrument pilot : atp |
| Experience | flight time last 90 days : 240 flight time total : 12500 flight time type : 4350 |
| ASRS Report | 247752 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp pilot : commercial pilot : instrument pilot : flight engineer |
| Experience | flight time last 90 days : 240 flight time total : 3800 flight time type : 850 |
| ASRS Report | 247850 |
| Events | |
| Anomaly | non adherence : clearance other anomaly other other spatial deviation |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance flight crew : returned to intended course or assigned course other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation other |
Narrative:
In boston we received a pre departure clearance on ACARS which read: bos...glyde...baf...ign V157 valre...haarp...lga. We had filed bos...glyde...baf...V292 V157...valre. About 20 mi west of baf center asked us if we were proceeding direct to ign. We were not, we were flying V292, the 279 degree radial west of barnes. Center queried our flight plan and we clarified the situation and proceeded direct ign. No traffic conflicts were remarked about. In fact, center said 'no problem' and the matter was dropped, we presume. Suggestion to rectify and prevent such sits: I suggest that, when a clearance is not 'as filed,' the pdcs on ACARS should be clearly marked with a real eye-catcher such as: 'note, note, note' or '*****' or 'not as filed, be careful stupid.' the current format makes a slight rerte easy to miss.
Original NASA ASRS Text
Title: HDG TRACK POS DEV WHEN FLC VIGILANCE FAILS TO DETECT AMENDED CLRNC RTE CHANGE ON THEIR PDC.
Narrative: IN BOSTON WE RECEIVED A PDC ON ACARS WHICH READ: BOS...GLYDE...BAF...IGN V157 VALRE...HAARP...LGA. WE HAD FILED BOS...GLYDE...BAF...V292 V157...VALRE. ABOUT 20 MI W OF BAF CTR ASKED US IF WE WERE PROCEEDING DIRECT TO IGN. WE WERE NOT, WE WERE FLYING V292, THE 279 DEG RADIAL W OF BARNES. CTR QUERIED OUR FLT PLAN AND WE CLARIFIED THE SIT AND PROCEEDED DIRECT IGN. NO TFC CONFLICTS WERE REMARKED ABOUT. IN FACT, CTR SAID 'NO PROB' AND THE MATTER WAS DROPPED, WE PRESUME. SUGGESTION TO RECTIFY AND PREVENT SUCH SITS: I SUGGEST THAT, WHEN A CLRNC IS NOT 'AS FILED,' THE PDCS ON ACARS SHOULD BE CLRLY MARKED WITH A REAL EYE-CATCHER SUCH AS: 'NOTE, NOTE, NOTE' OR '*****' OR 'NOT AS FILED, BE CAREFUL STUPID.' THE CURRENT FORMAT MAKES A SLIGHT RERTE EASY TO MISS.
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.