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Small transport X had less than standard separation from small aircraft Y during landing. System error.
| Attributes | |
| ACN | 147460 |
| Time | |
| Date | 199006 |
| Day | Sat |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : baf |
| State Reference | MA |
| Altitude | agl bound lower : 0 agl bound upper : 0 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | Small Transport, Low Wing, 2 Turboprop Eng |
| Flight Phase | landing other |
| Flight Plan | None |
| Aircraft 2 | |
| Make Model Name | Small Aircraft, High Wing, 1 Eng, Fixed Gear |
| Flight Phase | landing other |
| Flight Plan | None |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : local |
| Qualification | controller : non radar |
| ASRS Report | 147460 |
| Person 2 | |
| Affiliation | Other |
| Function | flight crew : single pilot |
| Qualification | pilot : private |
| Events | |
| Anomaly | conflict : ground less severe non adherence : required legal separation non adherence : published procedure |
| Independent Detector | other controllera |
| Resolutory Action | none taken : anomaly accepted |
| Consequence | Other |
| Miss Distance | horizontal : 4000 vertical : 0 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Small transport X was on final to runway 20 and sequenced #2 for small aircraft Y on final to runway 33. I told the small aircraft Y to land through the runway intersection and cleared small transport X to land. It appears that as small transport X crossed the landing threshold as the small aircraft Y was just airborne through the runway intersection landing runway 33. This happened during moderate traffic with quite a bit of haze. Also the wind was variable from 230 at 12 to 300 at 12.
Original NASA ASRS Text
Title: SMT X HAD LESS THAN STANDARD SEPARATION FROM SMA Y DURING LNDG. SYSTEM ERROR.
Narrative: SMT X WAS ON FINAL TO RWY 20 AND SEQUENCED #2 FOR SMA Y ON FINAL TO RWY 33. I TOLD THE SMA Y TO LAND THROUGH THE RWY INTXN AND CLRED SMT X TO LAND. IT APPEARS THAT AS SMT X CROSSED THE LNDG THRESHOLD AS THE SMA Y WAS JUST AIRBORNE THROUGH THE RWY INTXN LNDG RWY 33. THIS HAPPENED DURING MODERATE TFC WITH QUITE A BIT OF HAZE. ALSO THE WIND WAS VARIABLE FROM 230 AT 12 TO 300 AT 12.
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.