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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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ZTL controller experienced operational error at approximately 17000 ft when failing to realize an interim altitude was issued and separation was being lost.
| Attributes | |
| ACN | 675399 |
| Time | |
| Date | 200510 |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : atl.airport |
| State Reference | GA |
| Altitude | msl single value : 16900 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : ztl.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | MD-80 Series (DC-9-80) Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : ztl.artcc |
| Operator | general aviation : personal |
| Make Model Name | King Air 100 A/B |
| Operating Under FAR Part | Part 91 |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Experience | controller radar : 23 |
| ASRS Report | 675399 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation |
| Independent Detector | atc equipment : conflict alert other controllera |
| Resolutory Action | controller : issued new clearance controller : issued alert |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 27600 vertical : 200 |
| Supplementary | |
| Problem Areas | Company |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
MD80 departed atl. I climbed him to 16000 ft for his traffic at 17000 ft. I had a d-side controller moved from my sector to another busy sector shortly before this. The d-side controller would have normally entered the interim altitude in the aircraft's data block. Conflict alert activated between MD80 and BE10. Since there was no interim altitude showing for MD80; I mistakenly assumed that I had climbed him to FL230; the routine altitude for departures. MD80 was indicating 16100 ft. I asked MD80 to be out of FL180 within 1 min and turned both aircraft. I did not officially climb MD80 until well after the incident.
Original NASA ASRS Text
Title: ZTL CTLR EXPERIENCED OPERROR AT APPROX 17000 FT WHEN FAILING TO REALIZE AN INTERIM ALT WAS ISSUED AND SEPARATION WAS BEING LOST.
Narrative: MD80 DEPARTED ATL. I CLBED HIM TO 16000 FT FOR HIS TFC AT 17000 FT. I HAD A D-SIDE CTLR MOVED FROM MY SECTOR TO ANOTHER BUSY SECTOR SHORTLY BEFORE THIS. THE D-SIDE CTLR WOULD HAVE NORMALLY ENTERED THE INTERIM ALT IN THE ACFT'S DATA BLOCK. CONFLICT ALERT ACTIVATED BTWN MD80 AND BE10. SINCE THERE WAS NO INTERIM ALT SHOWING FOR MD80; I MISTAKENLY ASSUMED THAT I HAD CLBED HIM TO FL230; THE ROUTINE ALT FOR DEPS. MD80 WAS INDICATING 16100 FT. I ASKED MD80 TO BE OUT OF FL180 WITHIN 1 MIN AND TURNED BOTH ACFT. I DID NOT OFFICIALLY CLB MD80 UNTIL WELL AFTER THE INCIDENT.
Data retrieved from NASA's ASRS site as of January 2009 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.