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Large transport flight crew deviation when they turn aircraft to a heading not listed on their SID. The heading of 288 degrees matched the departure control frequency for yyz, which was 128 pt 8 and the desired radial of 288 degrees. A matter of interpolation.
| Attributes | |
| ACN | 364915 |
| Time | |
| Date | 199703 |
| Day | Fri |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : yyz |
| State Reference | ON |
| Altitude | msl bound lower : 2500 msl bound upper : 2500 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : yyz |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other |
| Flight Phase | climbout : initial |
| Route In Use | departure other departure sid : sid enroute : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Cessna 210 Centurion / Turbo Centurion 210C, 210D |
| Operating Under FAR Part | Part 91 |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : second officer |
| Qualification | pilot : flight engineer pilot : instrument pilot : commercial pilot : atp |
| Experience | flight time last 90 days : 140 flight time total : 3000 flight time type : 1500 |
| ASRS Report | 364915 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | non adherence : published procedure non adherence : clearance other anomaly other other spatial deviation |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance flight crew : returned to intended course or assigned course other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Departed yyz runway 24R with a post-departure frequency change to 128.8 VHF. Runway 24R SID calls for heading 237 degrees then 245 degrees at 1000 ft. Captain turned right to 288 degrees when cleared to 'resume the SID' by departure, mistakenly, instead of maintaining 245 degrees, and staying on 128.8 VHF. Inadvertent error in which departure control said there was no traffic conflict. The flight was intercepting a 288 degree radial out of yyz on V216/V320 to walpp and arthr en route to peck. And we were to contact departure on 128.8 MHZ. The chance for misunderstanding here is significant.
Original NASA ASRS Text
Title: LGT FLC DEV WHEN THEY TURN ACFT TO A HDG NOT LISTED ON THEIR SID. THE HDG OF 288 DEGS MATCHED THE DEP CTL FREQ FOR YYZ, WHICH WAS 128 PT 8 AND THE DESIRED RADIAL OF 288 DEGS. A MATTER OF INTERPOLATION.
Narrative: DEPARTED YYZ RWY 24R WITH A POST-DEP FREQ CHANGE TO 128.8 VHF. RWY 24R SID CALLS FOR HDG 237 DEGS THEN 245 DEGS AT 1000 FT. CAPT TURNED R TO 288 DEGS WHEN CLRED TO 'RESUME THE SID' BY DEP, MISTAKENLY, INSTEAD OF MAINTAINING 245 DEGS, AND STAYING ON 128.8 VHF. INADVERTENT ERROR IN WHICH DEP CTL SAID THERE WAS NO TFC CONFLICT. THE FLT WAS INTERCEPTING A 288 DEG RADIAL OUT OF YYZ ON V216/V320 TO WALPP AND ARTHR ENRTE TO PECK. AND WE WERE TO CONTACT DEP ON 128.8 MHZ. THE CHANCE FOR MISUNDERSTANDING HERE IS SIGNIFICANT.
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.