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Tower controller working a combined position operation of local ground control cleared a tampico into position on the active runway at intersection N5 prior to the landing cessna 402 being stopped or slowed to a decent taxi speed. Reporter issued immediate instructions to the cessna to stop before intersection N5.
| Attributes | |
| ACN | 331937 |
| Time | |
| Date | 199603 |
| Day | Wed |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : dab |
| State Reference | FL |
| Altitude | agl bound lower : 0 agl bound upper : 0 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | general aviation : corporate |
| Make Model Name | Cessna 402/402C/B379 Businessliner/Utiliner |
| Operating Under FAR Part | Part 91 |
| Flight Phase | ground other : taxi landing other |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Tampico TB-9 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | ground other : taxi |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : local controller : ground |
| Qualification | controller : radar |
| Experience | controller military : 5 controller radar : 14 |
| ASRS Report | 331937 |
| Person 2 | |
| Affiliation | Other |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | conflict : ground critical incursion : runway non adherence : required legal separation |
| Independent Detector | other other : unspecified atc |
| Resolutory Action | controller : issued new clearance other |
| Consequence | Other |
| Miss Distance | horizontal : 300 vertical : 0 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error other |
Narrative:
While working in the control tower on mar/wed/96, traffic became heavy around XA00 am. Local control and ground were combined. The problem occurred when I issued control instructions out of sequence. Aircraft #1 was on landing rollout and I believed at taxi speed. Aircraft #2 was located downfield at intersection N5. I issued 'taxi into position and hold' to aircraft #2 with the intention of crossing other traffic downfield. While scanning back at aircraft #1, I realized my mistake and issued control instructions to aircraft #1 to hold short of intersection N5. Aircraft #1 observed aircraft #2 crossing the hold bar and about to enter the runway and applied braking to avoid the conflict. Contributing factor: local control and ground control should have been split.
Original NASA ASRS Text
Title: TWR CTLR WORKING A COMBINED POS OP OF LCL GND CTL CLRED A TAMPICO INTO POS ON THE ACTIVE RWY AT INTXN N5 PRIOR TO THE LNDG CESSNA 402 BEING STOPPED OR SLOWED TO A DECENT TAXI SPD. RPTR ISSUED IMMEDIATE INSTRUCTIONS TO THE CESSNA TO STOP BEFORE INTXN N5.
Narrative: WHILE WORKING IN THE CTL TWR ON MAR/WED/96, TFC BECAME HVY AROUND XA00 AM. LCL CTL AND GND WERE COMBINED. THE PROB OCCURRED WHEN I ISSUED CTL INSTRUCTIONS OUT OF SEQUENCE. ACFT #1 WAS ON LNDG ROLLOUT AND I BELIEVED AT TAXI SPD. ACFT #2 WAS LOCATED DOWNFIELD AT INTXN N5. I ISSUED 'TAXI INTO POS AND HOLD' TO ACFT #2 WITH THE INTENTION OF XING OTHER TFC DOWNFIELD. WHILE SCANNING BACK AT ACFT #1, I REALIZED MY MISTAKE AND ISSUED CTL INSTRUCTIONS TO ACFT #1 TO HOLD SHORT OF INTXN N5. ACFT #1 OBSERVED ACFT #2 XING THE HOLD BAR AND ABOUT TO ENTER THE RWY AND APPLIED BRAKING TO AVOID THE CONFLICT. CONTRIBUTING FACTOR: LCL CTL AND GND CTL SHOULD HAVE BEEN SPLIT.
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.