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Delayed takeoff by aircraft Y on runway 17L requires local controller to issue a go around to aircraft X on short final with a 300 ft ceiling at cos.
| Attributes | |
| ACN | 638804 |
| Time | |
| Date | 200411 |
| Day | Sun |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : cos.airport |
| State Reference | CO |
| Altitude | agl single value : 300 |
| Environment | |
| Flight Conditions | IMC |
| Weather Elements | Fog |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : cos.tower |
| Operator | common carrier : air carrier |
| Make Model Name | MD-83 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | ils localizer & glide slope : 17l |
| Flight Phase | descent : approach landing : go around |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | tower : cos.tower |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Flight Phase | ground : position and hold |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : cfi pilot : atp |
| Experience | flight time last 90 days : 170 flight time total : 6300 flight time type : 1300 |
| ASRS Report | 638804 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Events | |
| Anomaly | conflict : airborne less severe inflight encounter : weather other anomaly other |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance flight crew : executed go around |
| Consequence | faa : reviewed incident with flight crew |
| Supplementary | |
| Problem Areas | ATC Human Performance Flight Crew Human Performance Weather |
| Primary Problem | ATC Human Performance |
Narrative:
On the ILS runway 17L approach to cos, we were cleared to land. Another aircraft was cleared for takeoff on the same runway and I noted on the TCASII approximately a 5 mi separation between us. At 300 ft we were instructed to 'go around, traffic on the runway.' I executed the go around and received vectors for a second approach, which was uneventful. At no point on the first approach or go around did we ever see the runway. After landing, I asked the ground controller to explain the situation and I was told that an aircraft had been cleared into position and hold and then instructed to taxi clear and report. I was instructed to go around because the other aircraft was not clear. I could have anticipated the situation if I had been listening more closely and heard the communication with the other aircraft. I believe the controllers allowed insufficient separation to begin with.
Original NASA ASRS Text
Title: DELAYED TKOF BY ACFT Y ON RWY 17L REQUIRES LCL CTLR TO ISSUE A GAR TO ACFT X ON SHORT FINAL WITH A 300 FT CEILING AT COS.
Narrative: ON THE ILS RWY 17L APCH TO COS, WE WERE CLRED TO LAND. ANOTHER ACFT WAS CLRED FOR TKOF ON THE SAME RWY AND I NOTED ON THE TCASII APPROX A 5 MI SEPARATION BTWN US. AT 300 FT WE WERE INSTRUCTED TO 'GO AROUND, TFC ON THE RWY.' I EXECUTED THE GAR AND RECEIVED VECTORS FOR A SECOND APCH, WHICH WAS UNEVENTFUL. AT NO POINT ON THE FIRST APCH OR GAR DID WE EVER SEE THE RWY. AFTER LNDG, I ASKED THE GND CTLR TO EXPLAIN THE SIT AND I WAS TOLD THAT AN ACFT HAD BEEN CLRED INTO POS AND HOLD AND THEN INSTRUCTED TO TAXI CLR AND RPT. I WAS INSTRUCTED TO GO AROUND BECAUSE THE OTHER ACFT WAS NOT CLR. I COULD HAVE ANTICIPATED THE SIT IF I HAD BEEN LISTENING MORE CLOSELY AND HEARD THE COM WITH THE OTHER ACFT. I BELIEVE THE CTLRS ALLOWED INSUFFICIENT SEPARATION TO BEGIN WITH.
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.