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Heading track deviation occurs with a B737 flight crew misinterping a clearance and dialing in the wrong VOR for an amended route clearance on the heatt 5 arrival into mia, fl.
| Attributes | |
| ACN | 551206 |
| Time | |
| Date | 200206 |
| Day | Thu |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | navaid : vrb.vortac |
| State Reference | FL |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zma.artcc tower : ord.tower |
| Operator | common carrier : air carrier |
| Make Model Name | B737 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other other vortac |
| Route In Use | arrival star : heatt 5 |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| ASRS Report | 551206 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Events | |
| Anomaly | non adherence : clearance other anomaly other other spatial deviation |
| Independent Detector | atc equipment other atc equipment : radar other controllera |
| Resolutory Action | controller : issued advisory none taken : detected after the fact |
| Consequence | faa : reviewed incident with flight crew other |
| Supplementary | |
| Problem Areas | Airspace Structure Flight Crew Human Performance ATC Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
While on the heatt arrival, controller issued the following clearance: 'turn two zero degrees left, intercept the vkz 018 degree radial, heatt 5 arrival, descend and maintain FL240, pilot's discretion, over.' on account of the complexity of this clearance, we gave a partial readback which contained erroneous understanding of the clearance, prompting the controller to give the clearance which he did again -- in our opinion rapidly -- containing the same unbroken chain of elements. On the second attempted readback, radio congestion resulted in a partial readback. We then intercepted the given radial but off the vrb VOR of the heatt arrival instead of the vkz VOR. The controller then gave the same clearance in the same fashion, preceding it with, 'ok, aircraft X, for the third time....' failure to comply with the clearance was attributable to the complexity of the clearance and the pilot's subsequent failure to make a full readback of the entire clearance.
Original NASA ASRS Text
Title: HDG TRACK DEV OCCURS WITH A B737 FLC MISINTERPING A CLRNC AND DIALING IN THE WRONG VOR FOR AN AMENDED RTE CLRNC ON THE HEATT 5 ARR INTO MIA, FL.
Narrative: WHILE ON THE HEATT ARR, CTLR ISSUED THE FOLLOWING CLRNC: 'TURN TWO ZERO DEGS L, INTERCEPT THE VKZ 018 DEG RADIAL, HEATT 5 ARR, DSND AND MAINTAIN FL240, PLT'S DISCRETION, OVER.' ON ACCOUNT OF THE COMPLEXITY OF THIS CLRNC, WE GAVE A PARTIAL READBACK WHICH CONTAINED ERRONEOUS UNDERSTANDING OF THE CLRNC, PROMPTING THE CTLR TO GIVE THE CLRNC WHICH HE DID AGAIN -- IN OUR OPINION RAPIDLY -- CONTAINING THE SAME UNBROKEN CHAIN OF ELEMENTS. ON THE SECOND ATTEMPTED READBACK, RADIO CONGESTION RESULTED IN A PARTIAL READBACK. WE THEN INTERCEPTED THE GIVEN RADIAL BUT OFF THE VRB VOR OF THE HEATT ARR INSTEAD OF THE VKZ VOR. THE CTLR THEN GAVE THE SAME CLRNC IN THE SAME FASHION, PRECEDING IT WITH, 'OK, ACFT X, FOR THE THIRD TIME....' FAILURE TO COMPLY WITH THE CLRNC WAS ATTRIBUTABLE TO THE COMPLEXITY OF THE CLRNC AND THE PLT'S SUBSEQUENT FAILURE TO MAKE A FULL READBACK OF THE ENTIRE CLRNC.
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.