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Heading track position deviation after air carrier flight crew cleared 'direct' lga 'when able.' a non adherence to ATC clearance instruction.
| Attributes | |
| ACN | 309180 |
| Time | |
| Date | 199506 |
| Day | Sat |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | atc facility : adw |
| State Reference | DC |
| Altitude | msl bound lower : 29000 msl bound upper : 29000 |
| Environment | |
| Flight Conditions | Mixed |
| Light | Dusk |
| Aircraft 1 | |
| Controlling Facilities | artcc : zdc |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other |
| Flight Phase | cruise other |
| Route In Use | enroute : direct |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial pilot : atp |
| Experience | flight time last 90 days : 100 flight time total : 6000 flight time type : 200 |
| ASRS Report | 309180 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | inflight encounter : weather non adherence : published procedure non adherence : clearance other anomaly other other spatial deviation |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance flight crew : became reoriented other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
We were deviating around numerous thunderstorms, then were given a clearance of 'direct laguardia when able.' we dialed in lga VOR and turned to go direct. Several mins later ATC queried our heading and gave us a new heading for lga. Turns out we were tracking to andrews AFB VOR instead of lga VOR. (Both are same frequency). Next time I'll identify the VOR before I fly the course. Also, ATC should be made aware of this 'trap.'
Original NASA ASRS Text
Title: HDG TRACK POS DEV AFTER ACR FLC CLRED 'DIRECT' LGA 'WHEN ABLE.' A NON ADHERENCE TO ATC CLRNC INSTRUCTION.
Narrative: WE WERE DEVIATING AROUND NUMEROUS TSTMS, THEN WERE GIVEN A CLRNC OF 'DIRECT LAGUARDIA WHEN ABLE.' WE DIALED IN LGA VOR AND TURNED TO GO DIRECT. SEVERAL MINS LATER ATC QUERIED OUR HDG AND GAVE US A NEW HDG FOR LGA. TURNS OUT WE WERE TRACKING TO ANDREWS AFB VOR INSTEAD OF LGA VOR. (BOTH ARE SAME FREQ). NEXT TIME I'LL IDENT THE VOR BEFORE I FLY THE COURSE. ALSO, ATC SHOULD BE MADE AWARE OF THIS 'TRAP.'
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.