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B777 aircraft was given a heading change by departure controller after takeoff and told reporter captain that tower controller had cleared them to maintain a 095 degree heading. Both pilots of the flight crew say they received no such heading clearance from tower.
| Attributes | |
| ACN | 373600 |
| Time | |
| Date | 199707 |
| Day | Fri |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : dia |
| State Reference | CO |
| Altitude | msl bound lower : 8000 msl bound upper : 8000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : dia |
| Operator | common carrier : air carrier |
| Make Model Name | B777-200 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | climbout : initial climbout : intermediate altitude |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : commercial pilot : flight engineer pilot : cfi pilot : atp |
| Experience | flight time last 90 days : 45 flight time total : 22000 flight time type : 96 |
| ASRS Report | 373600 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : flight engineer pilot : atp |
| Experience | flight time last 90 days : 65 flight time total : 6500 flight time type : 700 |
| ASRS Report | 374069 |
| Events | |
| Anomaly | other anomaly other other spatial deviation |
| Independent Detector | other controllera |
| Resolutory Action | none taken : detected after the fact |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Ambiguous |
| Air Traffic Incident | other |
Narrative:
Cleared for takeoff on runway 8 (080 degrees) after a commuter (BAC146). Acknowledged takeoff clearance and took off, copilot flying. Tower instructed us to call departure, which we did. Departure gave us a heading of 095 degrees to intercept the airway. The BAC146 was kept in visual contact the entire time and we never received any TCASII warnings. We were always well above and to the right of the BAC146. The problem is that the tower said that they gave us a heading of 095 degrees with the takeoff clearance, which neither my copilot nor I heard. When given a heading with a takeoff clearance, I always repeat it back and set the new heading in the MCP. Possibly a readback of all changed headings and altitudes should be required.
Original NASA ASRS Text
Title: B777 ACFT WAS GIVEN A HDG CHANGE BY DEP CTLR AFTER TKOF AND TOLD RPTR CAPT THAT TWR CTLR HAD CLRED THEM TO MAINTAIN A 095 DEG HDG. BOTH PLTS OF THE FLC SAY THEY RECEIVED NO SUCH HDG CLRNC FROM TWR.
Narrative: CLRED FOR TKOF ON RWY 8 (080 DEGS) AFTER A COMMUTER (BAC146). ACKNOWLEDGED TKOF CLRNC AND TOOK OFF, COPLT FLYING. TWR INSTRUCTED US TO CALL DEP, WHICH WE DID. DEP GAVE US A HDG OF 095 DEGS TO INTERCEPT THE AIRWAY. THE BAC146 WAS KEPT IN VISUAL CONTACT THE ENTIRE TIME AND WE NEVER RECEIVED ANY TCASII WARNINGS. WE WERE ALWAYS WELL ABOVE AND TO THE R OF THE BAC146. THE PROB IS THAT THE TWR SAID THAT THEY GAVE US A HDG OF 095 DEGS WITH THE TKOF CLRNC, WHICH NEITHER MY COPLT NOR I HEARD. WHEN GIVEN A HDG WITH A TKOF CLRNC, I ALWAYS REPEAT IT BACK AND SET THE NEW HDG IN THE MCP. POSSIBLY A READBACK OF ALL CHANGED HDGS AND ALTS SHOULD BE REQUIRED.
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.