<< >> NASA ASRS Report 383203, October 1997

Flight crew of a B757 responded to a clearance given to another aircraft with a similar call sign causing a TCASII TA and less than standard separation.

Attributes
ACN	383203
Time
Date	199710
Day	Mon
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : phx
State Reference	AZ
Altitude	msl bound lower : 39000 msl bound upper : 39000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zab
Operator	common carrier : air carrier
Make Model Name	B757 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	descent other
Route In Use	arrival other arrival star : star
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 185 flight time total : 4000 flight time type : 600
ASRS Report	383203
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : flight engineer pilot : cfi pilot : atp
Experience	flight time last 90 days : 300 flight time total : 17000 flight time type : 6000
ASRS Report	383290
Events
Anomaly	altitude deviation : excursion from assigned altitude conflict : airborne less severe non adherence : required legal separation non adherence : clearance other anomaly other
Independent Detector	other controllera
Resolutory Action	flight crew : returned to intended course or assigned course other
Consequence	Other
Miss Distance	horizontal : 30000 vertical : 1500
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Similar call signs and similar clearance given to 2 aircraft.

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Original NASA ASRS Text

Title: FLC OF A B757 RESPONDED TO A CLRNC GIVEN TO ANOTHER ACFT WITH A SIMILAR CALL SIGN CAUSING A TCASII TA AND LTSS.

Narrative: SIMILAR CALL SIGNS AND SIMILAR CLRNC GIVEN TO 2 ACFT.

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.