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Air carrier medium large transport track heading deviation and altitude deviation in response to wrong callsign.
| Attributes | |
| ACN | 145196 |
| Time | |
| Date | 199005 |
| Day | Sat |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : dfw |
| State Reference | TX |
| Altitude | msl bound lower : 5000 msl bound upper : 6000 |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : dfw |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Flight Phase | cruise other descent other |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 60 flight time total : 15000 flight time type : 3000 |
| ASRS Report | 145109 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude non adherence : clearance other spatial deviation |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Ambiguous |
| Air Traffic Incident | Pilot Deviation Operational Deviation other |
Narrative:
Heading 340 degree 10 northwest dfw VOR at 6000', we were cleared to 4000' plan ILS 18R. During descent to 4000' the clearance change to 17L, was blocked. We both thought we heard 'turn right 100 degree, descend to 4000', change runway to ILS 17L.' first officer acknowledged 4000' and questioned 100 degree heading, instant, almost over-riding response 'turn right 120 degree'. Since it again immediately followed our inquiry. I turned 120 degree. Approach control asked our heading. We said 120 degree. He said we took someone else's clearance. We said 'we acknowledged twice and questioned verification of turn'. He said turn left 080 degree, stop at 5000'. We stopped at 5000' and made a normal ILS. Approach controller not using full callsign, or was blocked. We questioned and followed his instructions. IFR, very congested radio, too much traffic and too many radio calls west/O proper idents. A very bad situation.
Original NASA ASRS Text
Title: ACR MLG TRACK HEADING DEVIATION AND ALT DEVIATION IN RESPONSE TO WRONG CALLSIGN.
Narrative: HDG 340 DEG 10 NW DFW VOR AT 6000', WE WERE CLRED TO 4000' PLAN ILS 18R. DURING DSNT TO 4000' THE CLRNC CHANGE TO 17L, WAS BLOCKED. WE BOTH THOUGHT WE HEARD 'TURN RIGHT 100 DEG, DSND TO 4000', CHANGE RWY TO ILS 17L.' F/O ACKNOWLEDGED 4000' AND QUESTIONED 100 DEG HDG, INSTANT, ALMOST OVER-RIDING RESPONSE 'TURN RIGHT 120 DEG'. SINCE IT AGAIN IMMEDIATELY FOLLOWED OUR INQUIRY. I TURNED 120 DEG. APCH CTL ASKED OUR HDG. WE SAID 120 DEG. HE SAID WE TOOK SOMEONE ELSE'S CLRNC. WE SAID 'WE ACKNOWLEDGED TWICE AND QUESTIONED VERIFICATION OF TURN'. HE SAID TURN LEFT 080 DEG, STOP AT 5000'. WE STOPPED AT 5000' AND MADE A NORMAL ILS. APCH CTLR NOT USING FULL CALLSIGN, OR WAS BLOCKED. WE QUESTIONED AND FOLLOWED HIS INSTRUCTIONS. IFR, VERY CONGESTED RADIO, TOO MUCH TFC AND TOO MANY RADIO CALLS W/O PROPER IDENTS. A VERY BAD SITUATION.
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.