Same company similar aircraft numbers.

Attributes
ACN	261598
Time
Date	199401
Day	Thu
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : cle
State Reference	OH
Aircraft 1
Controlling Facilities	tracon : cle tower : cle
Operator	common carrier : air carrier
Make Model Name	Light Transport, Low Wing, 2 Turboprop Eng
Flight Phase	climbout : takeoff descent : approach ground other : taxi
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : approach
Qualification	controller : radar
Experience	controller radar : 10
ASRS Report	261598
Person 2
Affiliation	government : faa
Function	controller : local
Qualification	controller : non radar
Events
Anomaly	non adherence : required legal separation other anomaly other
Independent Detector	other controllera
Resolutory Action	none taken : anomaly accepted
Consequence	Other
Supplementary
Air Traffic Incident	other

Narrative:

Air carrier company call signs are too similar. On one frequency at the same time we have 6 acrs with similar number call signs. Sometimes up to 15 aircraft at a time. We have had 2 operrors involving these similarities. This situation is extremely dangerous!!

Original NASA ASRS Text

Title: SAME COMPANY SIMILAR ACFT NUMBERS.

Narrative: ACR COMPANY CALL SIGNS ARE TOO SIMILAR. ON ONE FREQ AT THE SAME TIME WE HAVE 6 ACRS WITH SIMILAR NUMBER CALL SIGNS. SOMETIMES UP TO 15 ACFT AT A TIME. WE HAVE HAD 2 OPERRORS INVOLVING THESE SIMILARITIES. THIS SIT IS EXTREMELY DANGEROUS!!

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.