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Atx misunderstands ATC departure clearance at phx resulting in wrong heading prior to intercepting departure SID.
| Attributes | |
| ACN | 436710 |
| Time | |
| Date | 199904 |
| Day | Wed |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : phx.airport |
| State Reference | AZ |
| Altitude | agl single value : 1000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : phx.tower |
| Operator | common carrier : air taxi |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Operating Under FAR Part | Part 135 |
| Flight Phase | climbout : takeoff climbout : initial |
| Route In Use | departure : on vectors departure sid : ns |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air taxi |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp pilot : multi engine |
| Experience | flight time last 90 days : 150 flight time total : 2800 flight time type : 100 |
| ASRS Report | 436710 |
| Person 2 | |
| Affiliation | company : air taxi |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : multi engine pilot : instrument |
| Events | |
| Anomaly | non adherence : published procedure non adherence : clearance other anomaly other other spatial deviation |
| Independent Detector | atc equipment other atc equipment : radar other flight crewa |
| Resolutory Action | controller : issued new clearance flight crew : became reoriented none taken : detected after the fact |
| Supplementary | |
| Problem Areas | ATC Human Performance Flight Crew Human Performance |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
On departure, pilot/crew misunderstood clearance. Believed the proper departure was heading 235 degrees till 4 NM. The clearance was supposed to be direct to VOR and then the SID. Crew discovered mistake after takeoff. Believe that if tower might have repeated initial clearance when aircraft was cleared to take off, it would have prevented this mix-up. Crew should have asked for clarification.
Original NASA ASRS Text
Title: ATX MISUNDERSTANDS ATC DEP CLRNC AT PHX RESULTING IN WRONG HDG PRIOR TO INTERCEPTING DEP SID.
Narrative: ON DEP, PLT/CREW MISUNDERSTOOD CLRNC. BELIEVED THE PROPER DEP WAS HDG 235 DEGS TILL 4 NM. THE CLRNC WAS SUPPOSED TO BE DIRECT TO VOR AND THEN THE SID. CREW DISCOVERED MISTAKE AFTER TKOF. BELIEVE THAT IF TWR MIGHT HAVE REPEATED INITIAL CLRNC WHEN ACFT WAS CLRED TO TAKE OFF, IT WOULD HAVE PREVENTED THIS MIX-UP. CREW SHOULD HAVE ASKED FOR CLARIFICATION.
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.