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ZID controllers describe operational error at FL270 during OJT period as developmental controller fails to hear incorrect altitude assignment.
| Attributes | |
| ACN | 653927 |
| Time | |
| Date | 200504 |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | navaid : vhp.vortac |
| State Reference | IN |
| Altitude | msl bound lower : 26300 msl bound upper : 27000 |
| Environment | |
| Weather Elements | Turbulence |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zid.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | Regional Jet CL65 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : zid.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 | cruise : level |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar instruction : instructor |
| Qualification | controller : radar |
| Experience | controller radar : 21 |
| ASRS Report | 653927 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : radar instruction : trainee |
| Qualification | controller : developmental |
| Experience | controller military : 3.5 controller radar : 2.5 |
| ASRS Report | 654168 |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation |
| Independent Detector | other controllera other controllerb other other : 3 |
| Resolutory Action | controller : issued new clearance flight crew : took evasive action |
| Consequence | faa : investigated |
| Miss Distance | vertical : 700 |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Aircraft #1 was climbed to FL280. Then saw that aircraft #2 was traffic at FL270. Stopped aircraft #1 at FL260; but aircraft #1 did not get clearance and continued climb to FL280. Supplemental information from acn 654168: an amended altitude for aircraft #2 was issued to FL260. I thought I heard FL260. Aircraft #1 was north of vhp and aircraft #2 was south of vhp when altitude was noticed FL263. I told aircraft to maintain FL260. He stated he was higher and at that point they were 5 mi apart. Another aircraft must have called on when I issued the amended clearance and led me to believe aircraft #2 responded. I should have made sure that was the case.
Original NASA ASRS Text
Title: ZID CTLRS DESCRIBE OPERROR AT FL270 DURING OJT PERIOD AS DEVELOPMENTAL CTLR FAILS TO HEAR INCORRECT ALT ASSIGNMENT.
Narrative: ACFT #1 WAS CLBED TO FL280. THEN SAW THAT ACFT #2 WAS TFC AT FL270. STOPPED ACFT #1 AT FL260; BUT ACFT #1 DID NOT GET CLRNC AND CONTINUED CLB TO FL280. SUPPLEMENTAL INFO FROM ACN 654168: AN AMENDED ALT FOR ACFT #2 WAS ISSUED TO FL260. I THOUGHT I HEARD FL260. ACFT #1 WAS N OF VHP AND ACFT #2 WAS S OF VHP WHEN ALT WAS NOTICED FL263. I TOLD ACFT TO MAINTAIN FL260. HE STATED HE WAS HIGHER AND AT THAT POINT THEY WERE 5 MI APART. ANOTHER ACFT MUST HAVE CALLED ON WHEN I ISSUED THE AMENDED CLRNC AND LED ME TO BELIEVE ACFT #2 RESPONDED. I SHOULD HAVE MADE SURE THAT WAS THE CASE.
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.