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Operation error occurred when a ZOB ARTCC radar controller allowed a B737 to overtake an HS25 during departure climb.
| Attributes | |
| ACN | 599284 |
| Time | |
| Date | 200310 |
| Day | Sun |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | navaid : sky.vor |
| State Reference | OH |
| Altitude | msl single value : 15000 |
| Environment | |
| Flight Conditions | Mixed |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zob.artcc |
| Make Model Name | HS 125 Series 700 |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : zob.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | B737 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : developmental |
| Experience | controller limited radar : 1 flight time total : 37 |
| ASRS Report | 599284 |
| Person 2 | |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | conflict : airborne critical non adherence : published procedure non adherence : required legal separation |
| Independent Detector | atc equipment : conflict alert atc equipment other atc equipment : radar/modec other controllera other flight crewa other flight crewb |
| Resolutory Action | other |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 25500 vertical : 500 |
| Supplementary | |
| Problem Areas | Aircraft ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
The problem was a speed overtake of 2 aircraft on a climb out of cleveland. The overtake was noticed and I climbed the first aircraft to FL190. The first aircraft (an H25B) usually a fast clber -- especially when at slow speed) was given the climb clearance as the B737 was leaving 13000 ft. Since the B737 was only cleared to 15000 ft, it is expected for the climb to slow as to anticipate being level at 15000 ft. However, the B737 climbed extremely fast until level and had already reduced due to the H25B slow airspeed.
Original NASA ASRS Text
Title: OP ERROR OCCURRED WHEN A ZOB ARTCC RADAR CTLR ALLOWED A B737 TO OVERTAKE AN HS25 DURING DEP CLB.
Narrative: THE PROB WAS A SPD OVERTAKE OF 2 ACFT ON A CLBOUT OF CLEVELAND. THE OVERTAKE WAS NOTICED AND I CLBED THE FIRST ACFT TO FL190. THE FIRST ACFT (AN H25B) USUALLY A FAST CLBER -- ESPECIALLY WHEN AT SLOW SPD) WAS GIVEN THE CLB CLRNC AS THE B737 WAS LEAVING 13000 FT. SINCE THE B737 WAS ONLY CLRED TO 15000 FT, IT IS EXPECTED FOR THE CLB TO SLOW AS TO ANTICIPATE BEING LEVEL AT 15000 FT. HOWEVER, THE B737 CLBED EXTREMELY FAST UNTIL LEVEL AND HAD ALREADY REDUCED DUE TO THE H25B SLOW AIRSPD.
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.