 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
Reporter stated that the data tag associated with aircraft X displayed the wrong altitude, entered by his trainee, and was actually at the same altitude as aircraft Y. Loss of separation, resulted in an operational error.
| Attributes | |
| ACN | 442364 |
| Time | |
| Date | 199907 |
| Day | Sun |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | navaid : vhp.vor |
| State Reference | IN |
| Altitude | msl single value : 29000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zid.artcc tower : jfk.tower |
| Operator | common carrier : air carrier |
| Make Model Name | B737-200 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise : level |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : zid.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | DC-9 30 |
| Operating Under FAR Part | Part 121 |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar instruction : instructor |
| Qualification | controller : radar |
| Experience | controller radar : 5 controller time certified in position1 : 5 |
| ASRS Report | 442364 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : radar instruction : trainee |
| Qualification | controller : developmental |
| Experience | controller radar : 13 |
| ASRS Report | 441872 |
| Events | |
| Anomaly | conflict : airborne critical non adherence : required legal separation non adherence : published procedure |
| Independent Detector | atc equipment : conflict alert aircraft equipment : tcas other controllera other controllerb |
| Resolutory Action | flight crew : took evasive action none taken : insufficient time |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 18000 vertical : 500 |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Handoff taken from ZAU. Erroneous 'reported altitude' had been entered by trainee, due to location of quick reference key on quick action keyboard. Instructor and trainee both believed aircraft was an overflt level at FL330, instead was an ord departure at FL290. Air carrier X reported a TCASII alert, traffic was called, and pilot advised he was at FL290. Supplemental information from acn 441872: aircraft #2 was eastbound at FL290. Aircraft #1 was sebound thought to be at FL330, which was in data block. Aircraft #1 was actually at FL290 and came within 3 NM of aircraft #2 and got a TCASII alert and climbed.
Original NASA ASRS Text
Title: RPTR STATED THAT THE DATA TAG ASSOCIATED WITH ACFT X DISPLAYED THE WRONG ALT, ENTERED BY HIS TRAINEE, AND WAS ACTUALLY AT THE SAME ALT AS ACFT Y. LOSS OF SEPARATION, RESULTED IN AN OPERROR.
Narrative: HDOF TAKEN FROM ZAU. ERRONEOUS 'RPTED ALT' HAD BEEN ENTERED BY TRAINEE, DUE TO LOCATION OF QUICK REF KEY ON QUICK ACTION KEYBOARD. INSTRUCTOR AND TRAINEE BOTH BELIEVED ACFT WAS AN OVERFLT LEVEL AT FL330, INSTEAD WAS AN ORD DEP AT FL290. ACR X RPTED A TCASII ALERT, TFC WAS CALLED, AND PLT ADVISED HE WAS AT FL290. SUPPLEMENTAL INFO FROM ACN 441872: ACFT #2 WAS EBOUND AT FL290. ACFT #1 WAS SEBOUND THOUGHT TO BE AT FL330, WHICH WAS IN DATA BLOCK. ACFT #1 WAS ACTUALLY AT FL290 AND CAME WITHIN 3 NM OF ACFT #2 AND GOT A TCASII ALERT AND CLBED.
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.