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Air carrier reduced speed on final approach after being asked to keep speed up. This resulted in the second aircraft having to break off his approach.
| Attributes | |
| ACN | 119920 |
| Time | |
| Date | 198908 |
| Day | Wed |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : pit |
| State Reference | PA |
| Altitude | msl bound lower : 2000 msl bound upper : 3000 |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : pit |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Navigation In Use | Other |
| Flight Phase | descent : approach descent other |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Flight Phase | descent : approach descent other landing : go around |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Qualification | controller : radar |
| ASRS Report | 119920 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | non adherence : clearance other anomaly |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance |
| Consequence | Other |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | other |
Narrative:
Morning fog had restr the visibility at the airport, traffic was backed up, and air carrier X was asked to maintain his speed on the final. The pilot acknowledged and was sent to the tower. The pilot immediately reduced and the aircraft ground speed went from 200 KTS to 140 KTS on a 10 mi final. Had the pilot informed me that he could not maintain his speed then the air carrier Y behind him would not have overtaken him and it would not have been necessary to break air carrier Y off the final.
Original NASA ASRS Text
Title: ACR REDUCED SPEED ON FINAL APCH AFTER BEING ASKED TO KEEP SPEED UP. THIS RESULTED IN THE SECOND ACFT HAVING TO BREAK OFF HIS APCH.
Narrative: MORNING FOG HAD RESTR THE VISIBILITY AT THE ARPT, TFC WAS BACKED UP, AND ACR X WAS ASKED TO MAINTAIN HIS SPEED ON THE FINAL. THE PLT ACKNOWLEDGED AND WAS SENT TO THE TWR. THE PLT IMMEDIATELY REDUCED AND THE ACFT GND SPEED WENT FROM 200 KTS TO 140 KTS ON A 10 MI FINAL. HAD THE PLT INFORMED ME THAT HE COULD NOT MAINTAIN HIS SPEED THEN THE ACR Y BEHIND HIM WOULD NOT HAVE OVERTAKEN HIM AND IT WOULD NOT HAVE BEEN NECESSARY TO BREAK ACR Y OFF THE FINAL.
Data retrieved from NASA's ASRS site as of August 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.