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ZLA controller experienced operational error at approximately FL360 when correct altitude information was entered into the data block but the wrong altitude was issued.
| Attributes | |
| ACN | 691732 |
| Time | |
| Date | 200603 |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | navaid : jli.vortac |
| State Reference | CA |
| Altitude | msl single value : 36500 |
| Environment | |
| Flight Conditions | VMC VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zla.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : intermediate altitude |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : zla.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : intermediate altitude |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Experience | controller radar : 19 |
| ASRS Report | 691732 |
| 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 flight crew : took evasive action |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 26340 vertical : 800 |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Traffic was average to high and steady. Aircraft Y at FL380 descended to FL240. Aircraft X at FL400 descending to FL390. Aircraft Y leaving FL370 descending. Typed in FL380 on aircraft X and issued FL280.
Original NASA ASRS Text
Title: ZLA CTLR EXPERIENCED OPERROR AT APPROX FL360 WHEN CORRECT ALT INFO WAS ENTERED INTO THE DATA BLOCK BUT THE WRONG ALT WAS ISSUED.
Narrative: TFC WAS AVERAGE TO HIGH AND STEADY. ACFT Y AT FL380 DSNDED TO FL240. ACFT X AT FL400 DSNDING TO FL390. ACFT Y LEAVING FL370 DSNDING. TYPED IN FL380 ON ACFT X AND ISSUED FL280.
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.