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Misinterpretation between flight crew and ATC on initial heading assignment results in aircraft being off course.
| Attributes | |
| ACN | 208371 |
| Time | |
| Date | 199204 |
| Day | Sun |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : dca |
| State Reference | DC |
| Altitude | msl bound lower : 2000 msl bound upper : 2000 |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : dca tower : dca |
| Operator | general aviation : corporate |
| Make Model Name | Light Transport, Low Wing, 2 Turbojet Eng |
| Flight Phase | climbout : initial |
| Route In Use | departure other enroute : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | Other |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 180 flight time total : 12900 flight time type : 2600 |
| ASRS Report | 208371 |
| Person 2 | |
| Affiliation | Other |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | controller non radar : 10 controller radar : 2 flight time last 90 days : 140 flight time total : 3500 flight time type : 200 |
| ASRS Report | 208372 |
| Events | |
| Anomaly | non adherence : clearance other anomaly other other spatial deviation |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance |
| Consequence | Other |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | other |
Narrative:
Clearance delivery at dca issues clearance as a 320 heading for radar vector to assigned jet airway with no mention of aircraft being required by tower. At handoff to departure, to track the dca 328 radial. This results in confusion in the cockpit at a very busy and critical time. When the clearance is received a replacement for the requirement of tracking the dca 328 radial in an IFR, heavy rain environment. In reality, the 320 heading is only issued to intercept the 328 radial but this is not stated by clearance delivery. Supplemental information from acn 208372. A miscom between our aircraft, clearance delivery and the dca tower controller resulted in our aircraft being off the standard route. The controllers were busy, heavy rain was encountered at this time and there was a discrepancy between clearance delivery and controller instructions.
Original NASA ASRS Text
Title: MISINTERPRETATION BTWN FLC AND ATC ON INITIAL HDG ASSIGNMENT RESULTS IN ACFT BEING OFF COURSE.
Narrative: CLRNC DELIVERY AT DCA ISSUES CLRNC AS A 320 HDG FOR RADAR VECTOR TO ASSIGNED JET AIRWAY WITH NO MENTION OF ACFT BEING REQUIRED BY TWR. AT HDOF TO DEP, TO TRACK THE DCA 328 RADIAL. THIS RESULTS IN CONFUSION IN THE COCKPIT AT A VERY BUSY AND CRITICAL TIME. WHEN THE CLRNC IS RECEIVED A REPLACEMENT FOR THE REQUIREMENT OF TRACKING THE DCA 328 RADIAL IN AN IFR, HVY RAIN ENVIRONMENT. IN REALITY, THE 320 HDG IS ONLY ISSUED TO INTERCEPT THE 328 RADIAL BUT THIS IS NOT STATED BY CLRNC DELIVERY. SUPPLEMENTAL INFO FROM ACN 208372. A MISCOM BTWN OUR ACFT, CLRNC DELIVERY AND THE DCA TWR CTLR RESULTED IN OUR ACFT BEING OFF THE STANDARD RTE. THE CTLRS WERE BUSY, HVY RAIN WAS ENCOUNTERED AT THIS TIME AND THERE WAS A DISCREPANCY BTWN CLRNC DELIVERY AND CTLR INSTRUCTIONS.
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.