Air carrier flight crew complaint regarding numerous similar call signs on same frequency.

Attributes
ACN	183877
Time
Date	199107
Day	Fri
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : dtw
State Reference	MI
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Flight Phase	ground : holding
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 260 flight time total : 16000 flight time type : 11500
ASRS Report	183877
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Events
Anomaly	other anomaly other
Independent Detector	other flight crewa
Resolutory Action	none taken : unable
Consequence	Other
Supplementary
Air Traffic Incident	other

Narrative:

Flts with similar call signs operating on same frequencys. Airline scheduling not coordinated with other companies to preclude like call signs. Flight numbering system within single airline operations not established with consideration for reduction of call sign conflicts. On this date we found air carrier flts #11JB and #aahb departing dtw eastbound within 1 min of each other. Same occurrence last week. Also en route with cle center, air carrier flts #aajb, #aahb, #AAAH all shared same frequency. On return to dtw, flts #aajb and #aahe on same cle center frequency, wbound over new york and ohio.

Original NASA ASRS Text

Title: ACR FLC COMPLAINT REGARDING NUMEROUS SIMILAR CALL SIGNS ON SAME FREQ.

Narrative: FLTS WITH SIMILAR CALL SIGNS OPERATING ON SAME FREQS. AIRLINE SCHEDULING NOT COORDINATED WITH OTHER COMPANIES TO PRECLUDE LIKE CALL SIGNS. FLT NUMBERING SYSTEM WITHIN SINGLE AIRLINE OPS NOT ESTABLISHED WITH CONSIDERATION FOR REDUCTION OF CALL SIGN CONFLICTS. ON THIS DATE WE FOUND ACR FLTS #11JB AND #AAHB DEPARTING DTW EBOUND WITHIN 1 MIN OF EACH OTHER. SAME OCCURRENCE LAST WEEK. ALSO ENRTE WITH CLE CENTER, ACR FLTS #AAJB, #AAHB, #AAAH ALL SHARED SAME FREQ. ON RETURN TO DTW, FLTS #AAJB AND #AAHE ON SAME CLE CENTER FREQ, WBOUND OVER NEW YORK AND OHIO.

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.