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ZFW controller experienced operational error at approximately FL240 when failing to realize a wrong altitude was issued.
| Attributes | |
| ACN | 675303 |
| Time | |
| Date | 200510 |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | navaid : act.vortac |
| State Reference | TX |
| Altitude | msl bound lower : 23000 msl bound upper : 24000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | artcc : zfw.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | EMB ERJ 145 ER&LR |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : initial |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : zfw.artcc |
| Operator | general aviation : personal |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Operating Under FAR Part | Part 91 |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : military controller : developmental |
| Experience | controller military : 5 |
| ASRS Report | 675303 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation non adherence : published procedure |
| Independent Detector | atc equipment : conflict alert other controllera |
| Resolutory Action | controller : issued new clearance controller : issued alert flight crew : took evasive action |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 12000 vertical : 580 |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
I had an air carrier stopped at FL230 and put the interim altitude in the data block to remind me; but when he asked for higher; I stated 'unable; expect higher in 2 mins; maintain FL240.' this was his traffic's altitude. The next controller took action to descend the flight back to FL230. I was combining position and didn't see the altitude change until after he assumed responsibility of the position.
Original NASA ASRS Text
Title: ZFW CTLR EXPERIENCED OPERROR AT APPROX FL240 WHEN FAILING TO REALIZE A WRONG ALT WAS ISSUED.
Narrative: I HAD AN ACR STOPPED AT FL230 AND PUT THE INTERIM ALT IN THE DATA BLOCK TO REMIND ME; BUT WHEN HE ASKED FOR HIGHER; I STATED 'UNABLE; EXPECT HIGHER IN 2 MINS; MAINTAIN FL240.' THIS WAS HIS TFC'S ALT. THE NEXT CTLR TOOK ACTION TO DSND THE FLT BACK TO FL230. I WAS COMBINING POS AND DIDN'T SEE THE ALT CHANGE UNTIL AFTER HE ASSUMED RESPONSIBILITY OF THE POS.
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.