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A grumman tiger AA5 commercial pilot accepts a clearance for another aircraft with a similar call sign while under control of nkt, nc.
| Attributes | |
| ACN | 470502 |
| Time | |
| Date | 200004 |
| Day | Sun |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : ewn.airport |
| State Reference | NC |
| Altitude | msl bound lower : 2500 msl bound upper : 4000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | general aviation : personal |
| Make Model Name | Cheetah, Tiger, Traveler |
| Operating Under FAR Part | Part 91 |
| Navigation In Use | other vortac |
| Flight Phase | cruise : level cruise : enroute altitude change |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | general aviation : personal |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Operating Under FAR Part | Part 91 |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | other |
| Function | flight crew : single pilot |
| Qualification | pilot : commercial pilot : instrument pilot : multi engine |
| Experience | flight time last 90 days : 20 flight time total : 2325 flight time type : 1800 |
| ASRS Report | 470502 |
| Person 2 | |
| Affiliation | other |
| Function | flight crew : single pilot |
| Qualification | pilot : private pilot : instrument |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude non adherence : clearance non adherence : published procedure other anomaly other |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance flight crew : returned to assigned altitude |
| Consequence | faa : reviewed incident with flight crew |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance Airspace Structure ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Controled by cherry point MCAS approach. Level flight at 4000 ft. Received altitude change from 4000 ft to 2500 ft. Acknowledged, descended. Later, approach questioned altitude, issued new clearance to 4000 ft. Stated another aircraft xyz was on the frequency not my number, abc. The controller's xmissions were muffled and not entirely clear and I should have questioned the new altitude assignment, as I have flown the route many times and not had that happen. Pilots get used to accepting clrncs and instructions without question or analysis. I am aware, though, that an omission like that can be fatal. I won't be so quick next time.
Original NASA ASRS Text
Title: A GRUMMAN TIGER AA5 COMMERCIAL PLT ACCEPTS A CLRNC FOR ANOTHER ACFT WITH A SIMILAR CALL SIGN WHILE UNDER CTL OF NKT, NC.
Narrative: CTLED BY CHERRY POINT MCAS APCH. LEVEL FLT AT 4000 FT. RECEIVED ALT CHANGE FROM 4000 FT TO 2500 FT. ACKNOWLEDGED, DSNDED. LATER, APCH QUESTIONED ALT, ISSUED NEW CLRNC TO 4000 FT. STATED ANOTHER ACFT XYZ WAS ON THE FREQ NOT MY NUMBER, ABC. THE CTLR'S XMISSIONS WERE MUFFLED AND NOT ENTIRELY CLR AND I SHOULD HAVE QUESTIONED THE NEW ALT ASSIGNMENT, AS I HAVE FLOWN THE RTE MANY TIMES AND NOT HAD THAT HAPPEN. PLTS GET USED TO ACCEPTING CLRNCS AND INSTRUCTIONS WITHOUT QUESTION OR ANALYSIS. I AM AWARE, THOUGH, THAT AN OMISSION LIKE THAT CAN BE FATAL. I WON'T BE SO QUICK NEXT TIME.
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.