<< >> NASA ASRS Report 81575, February 1988

Same company air carrier widebody transport read back and initiated clearance for company flight with similar sounding a/north.

Attributes
ACN	81575
Time
Date	198802
Day	Sun
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : mia
State Reference	FL
Altitude	msl bound lower : 3000 msl bound upper : 4000
Environment
Flight Conditions	Mixed
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : mia
Operator	common carrier : air carrier
Make Model Name	Widebody, Low Wing, 3 Turbojet Eng
Navigation In Use	Other
Flight Phase	cruise other descent other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 175 flight time total : 27000 flight time type : 1800
ASRS Report	81575
Person 2
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	altitude deviation : excursion from assigned altitude other anomaly other
Independent Detector	other controllera
Resolutory Action	controller : issued new clearance
Consequence	Other
Supplementary
Primary Problem	Ambiguous
Air Traffic Incident	Pilot Deviation

Narrative:

Flight lga-mia. Mia approach had company flight X heavy and company flight Y heavy on frequency 125.75. Approach clrd company flight Y heavy to turn left to 100 degrees and des from 4000' to 3000'. First officer read clearance back. About 2 mins later approach gave flight Y heavy an immediate climb to 4000' and right turn to 340 degrees. He said the original clearance was for flight X heavy. Controller clrd Y heavy. Copilot read back Y heavy transport. Seemed to be a mix up between sound-alike flight numbers X and Y. Could have used a 'caution--company flight X and company flight Y on same frequency.'

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Original NASA ASRS Text

Title: SAME COMPANY ACR WDB READ BACK AND INITIATED CLRNC FOR COMPANY FLT WITH SIMILAR SOUNDING A/N.

Narrative: FLT LGA-MIA. MIA APCH HAD COMPANY FLT X HVY AND COMPANY FLT Y HVY ON FREQ 125.75. APCH CLRD COMPANY FLT Y HVY TO TURN LEFT TO 100 DEGS AND DES FROM 4000' TO 3000'. F/O READ CLRNC BACK. ABOUT 2 MINS LATER APCH GAVE FLT Y HVY AN IMMEDIATE CLB TO 4000' AND RIGHT TURN TO 340 DEGS. HE SAID THE ORIGINAL CLRNC WAS FOR FLT X HVY. CTLR CLRD Y HVY. COPLT READ BACK Y HVT. SEEMED TO BE A MIX UP BTWN SOUND-ALIKE FLT NUMBERS X AND Y. COULD HAVE USED A 'CAUTION--COMPANY FLT X AND COMPANY FLT Y ON SAME FREQ.'

Data retrieved from NASA's ASRS site as of August 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.