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Phx local controller describes event when anticipated departure separation may have been minimal as prior departure aborts.
| Attributes | |
| ACN | 671672 |
| Time | |
| Date | 200509 |
| Place | |
| Locale Reference | airport : phx.airport |
| State Reference | AZ |
| Altitude | agl single value : 0 |
| Environment | |
| Flight Conditions | VMC |
| Light | Dusk |
| Aircraft 1 | |
| Controlling Facilities | tower : tapa.tower |
| Operator | common carrier : air carrier |
| Make Model Name | Regional Jet 200 ER&LR |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : takeoff roll |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | tower : pit.tower |
| Operator | common carrier : air carrier |
| Make Model Name | B737-200 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : takeoff roll |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : local |
| Qualification | controller : radar |
| Experience | controller limited radar : 9 controller radar : 10 controller supervisory : 6 |
| ASRS Report | 671672 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | conflict : ground less severe |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance flight crew : rejected takeoff |
| Supplementary | |
| Problem Areas | Aircraft Flight Crew Human Performance ATC Human Performance |
| Primary Problem | Aircraft |
Narrative:
CRJ2 cleared for takeoff on runway 25R. B735 taxied into position and hold on runway 25R from taxiway east. CRJ2 midfield at takeoff speed; B735 still turning onto runway 25R cleared for takeoff. CRJ2 aborted; B735 was instructed to cancel takeoff clearance approximately 500 ft into takeoff roll. CRJ2 cleared to ramp; B735 taxied back for takeoff. B735 never achieved any real speed toward takeoff when CRJ2 aborted approximately 5000 ft downfield. Contributing factors: several SID's off for WX; rertes being done on the fly; including at the runway. Mi in trail/mins in trail in effect on usable SID's. Construction at runway approach end caused B735 to take more than normal time to turn onto runway. Possible solution: better application of anticipated separation; ensuring first aircraft is airborne even if #2 aircraft isn't holding in position.
Original NASA ASRS Text
Title: PHX LCL CTLR DESCRIBES EVENT WHEN ANTICIPATED DEP SEPARATION MAY HAVE BEEN MINIMAL AS PRIOR DEP ABORTS.
Narrative: CRJ2 CLRED FOR TKOF ON RWY 25R. B735 TAXIED INTO POS AND HOLD ON RWY 25R FROM TXWY E. CRJ2 MIDFIELD AT TKOF SPD; B735 STILL TURNING ONTO RWY 25R CLRED FOR TKOF. CRJ2 ABORTED; B735 WAS INSTRUCTED TO CANCEL TKOF CLRNC APPROX 500 FT INTO TKOF ROLL. CRJ2 CLRED TO RAMP; B735 TAXIED BACK FOR TKOF. B735 NEVER ACHIEVED ANY REAL SPD TOWARD TKOF WHEN CRJ2 ABORTED APPROX 5000 FT DOWNFIELD. CONTRIBUTING FACTORS: SEVERAL SID'S OFF FOR WX; RERTES BEING DONE ON THE FLY; INCLUDING AT THE RWY. MI IN TRAIL/MINS IN TRAIL IN EFFECT ON USABLE SID'S. CONSTRUCTION AT RWY APCH END CAUSED B735 TO TAKE MORE THAN NORMAL TIME TO TURN ONTO RWY. POSSIBLE SOLUTION: BETTER APPLICATION OF ANTICIPATED SEPARATION; ENSURING FIRST ACFT IS AIRBORNE EVEN IF #2 ACFT ISN'T HOLDING IN POS.
Data retrieved from NASA's ASRS site as of January 2009 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.