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Local controller decision to use improvised phraseology because of similar call signs results in an operational error.
| Attributes | |
| ACN | 550647 |
| Time | |
| Date | 200206 |
| Day | Tue |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : ona.airport |
| State Reference | NE |
| Altitude | agl single value : 0 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | general aviation : corporate |
| Make Model Name | IAI1125 (Astra) |
| Operating Under FAR Part | Part 91 |
| Flight Phase | climbout : takeoff |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | tower : oma.tower |
| Make Model Name | Champion Citabria 7ECA |
| Flight Phase | ground : taxi |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : local |
| Qualification | controller : radar |
| Experience | controller military : 3.5 controller radar : 14 |
| ASRS Report | 550643 |
| Person 2 | |
| Affiliation | company : corporate |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | incursion : runway non adherence : published procedure other anomaly other |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance controller : issued alert flight crew : took evasive action other |
| Miss Distance | horizontal : 2000 |
| Supplementary | |
| Problem Areas | ATC Human Performance Flight Crew Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
While working local control, I instructed aircraft X (astr) to taxi into position and hold on runway 18. Aircraft X acknowledged this instruction. I then gave aircraft X a clearance for takeoff on runway 18. Aircraft X acknowledged this instruction. My attention was then drawn to aircraft Y (CH7A) passing the hold short sign for runway 18 at intersection B. I then instructed aircraft Y to stop. This incident was categorized as an operational error because I used poor phraseology in my departure clearance instructions to aircraft X. This decision was due to similar sounding call signs aircraft X/aircraft Y.
Original NASA ASRS Text
Title: LCL CTLR DECISION TO USE IMPROVISED PHRASEOLOGY BECAUSE OF SIMILAR CALL SIGNS RESULTS IN AN OPERROR.
Narrative: WHILE WORKING LCL CTL, I INSTRUCTED ACFT X (ASTR) TO TAXI INTO POS AND HOLD ON RWY 18. ACFT X ACKNOWLEDGED THIS INSTRUCTION. I THEN GAVE ACFT X A CLRNC FOR TKOF ON RWY 18. ACFT X ACKNOWLEDGED THIS INSTRUCTION. MY ATTN WAS THEN DRAWN TO ACFT Y (CH7A) PASSING THE HOLD SHORT SIGN FOR RWY 18 AT INTXN B. I THEN INSTRUCTED ACFT Y TO STOP. THIS INCIDENT WAS CATEGORIZED AS AN OPERROR BECAUSE I USED POOR PHRASEOLOGY IN MY DEP CLRNC INSTRUCTIONS TO ACFT X. THIS DECISION WAS DUE TO SIMILAR SOUNDING CALL SIGNS ACFT X/ACFT Y.
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.