 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
Den local controller experienced operational error when utilizing anticipated in trail departure separation with crj following MD10 heavy.
| Attributes | |
| ACN | 733405 |
| Time | |
| Date | 200704 |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : den.airport |
| State Reference | CO |
| Altitude | agl single value : 0 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : den.tower |
| Operator | common carrier : air carrier |
| Make Model Name | DC-10 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : takeoff |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | tower : den.tower |
| Operator | common carrier : air carrier |
| Make Model Name | Regional Jet 700 ER&LR |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : takeoff ground : takeoff roll |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : local |
| Experience | controller radar : 22 controller time certified in position1 : 14 |
| ASRS Report | 733405 |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation |
| Independent Detector | other controllera |
| Resolutory Action | none taken : anomaly accepted |
| Miss Distance | horizontal : 27000 |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Departed MD10 off runway 8. Taxied CRJ7 into position and hold. Cleared CRJ7 for takeoff anticipating I would have a minimum of 6 mi separation. The CRJ7 began its takeoff roll quicker than anticipated; the MD10 climbed out slower than anticipated. The end result was 4.5 mi in trail separation; instead of 5 mi.
Original NASA ASRS Text
Title: DEN LCL CTLR EXPERIENCED OPERROR WHEN UTILIZING ANTICIPATED IN TRAIL DEP SEPARATION WITH CRJ FOLLOWING MD10 HEAVY.
Narrative: DEPARTED MD10 OFF RWY 8. TAXIED CRJ7 INTO POS AND HOLD. CLRED CRJ7 FOR TKOF ANTICIPATING I WOULD HAVE A MINIMUM OF 6 MI SEPARATION. THE CRJ7 BEGAN ITS TKOF ROLL QUICKER THAN ANTICIPATED; THE MD10 CLBED OUT SLOWER THAN ANTICIPATED. THE END RESULT WAS 4.5 MI IN TRAIL SEPARATION; INSTEAD OF 5 MI.
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.