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An instrument rated pilot misunderstood his IFR clearance and intercepted and tracked inbound to the VOR on the wrong radial. The reporter had been told that his readback was correct.
| Attributes | |
| ACN | 338940 |
| Time | |
| Date | 199606 |
| Day | Tue |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : emt |
| State Reference | CA |
| Altitude | msl bound lower : 2000 msl bound upper : 4000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Dusk |
| Aircraft 1 | |
| Controlling Facilities | tracon : ont |
| Operator | general aviation : personal |
| Make Model Name | Cessna 152 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | departure other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | Other |
| Function | flight crew : single pilot |
| Qualification | pilot : private pilot : instrument |
| Experience | flight time last 90 days : 35 flight time total : 200 flight time type : 100 |
| ASRS Report | 338940 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : departure |
| Qualification | controller : radar |
| Events | |
| Anomaly | non adherence : clearance other spatial deviation |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Flew incorrect radial of pdz on departure from emt runway 19. Instructions read back and confirmed were: 270 degree radial to pdz, which I went to, and flew. Correct instructions were standard departure (278 degree radial to pdz), and then 270 degree radial from pdz to V363. Noticed by controller on radar contact and given vectors to V363 (which I would have gotten anyway). Cause was my failure to understand instructions and emt ground controller's failure to notice that on readback (I simply got 'readback correct').
Original NASA ASRS Text
Title: AN INST RATED PLT MISUNDERSTOOD HIS IFR CLRNC AND INTERCEPTED AND TRACKED INBOUND TO THE VOR ON THE WRONG RADIAL. THE RPTR HAD BEEN TOLD THAT HIS READBACK WAS CORRECT.
Narrative: FLEW INCORRECT RADIAL OF PDZ ON DEP FROM EMT RWY 19. INSTRUCTIONS READ BACK AND CONFIRMED WERE: 270 DEG RADIAL TO PDZ, WHICH I WENT TO, AND FLEW. CORRECT INSTRUCTIONS WERE STANDARD DEP (278 DEG RADIAL TO PDZ), AND THEN 270 DEG RADIAL FROM PDZ TO V363. NOTICED BY CTLR ON RADAR CONTACT AND GIVEN VECTORS TO V363 (WHICH I WOULD HAVE GOTTEN ANYWAY). CAUSE WAS MY FAILURE TO UNDERSTAND INSTRUCTIONS AND EMT GND CTLR'S FAILURE TO NOTICE THAT ON READBACK (I SIMPLY GOT 'READBACK CORRECT').
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.