Another aircraft's clearance is taken and read back and not caught by ARTCC controller.

Attributes
ACN	488088
Time
Date	200010
Day	Mon
Local Time Of Day	1201 To 1800
Place
State Reference	FO
Altitude	msl bound lower : 2500 msl bound upper : 7000
Environment
Light	Daylight
Aircraft 1
Make Model Name	B727 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Route In Use	enroute airway : a315.airway
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
ASRS Report	488088
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument pilot : multi engine
ASRS Report	488090
Events
Anomaly	altitude deviation : excursion from assigned altitude non adherence : clearance
Independent Detector	other controllerb
Resolutory Action	controller : issued advisory
Consequence	other
Supplementary
Problem Areas	ATC Human Performance Flight Crew Human Performance
Primary Problem	ATC Human Performance

Narrative:

Approximately 20 mi south of dusan, received descent clearance from curacao to 7000 ft. Then cleared us to 2500 ft. That was read back by the first officer. Passing through 6000 ft, handed off to plegman approach. Reported on frequency, and passing through 5000 ft for 2500 ft, was advised that our assigned altitude was 7000 ft, and that the 2500 ft clearance was for a flight descending into aua. There was no traffic conflict. Supplemental information from acn 488090: the PF (first officer) read back to curacao 2500 ft for air carrier X.

Original NASA ASRS Text

Title: ANOTHER ACFT'S CLRNC IS TAKEN AND READ BACK AND NOT CAUGHT BY ARTCC CTLR.

Narrative: APPROX 20 MI S OF DUSAN, RECEIVED DSCNT CLRNC FROM CURACAO TO 7000 FT. THEN CLRED US TO 2500 FT. THAT WAS READ BACK BY THE FO. PASSING THROUGH 6000 FT, HANDED OFF TO PLEGMAN APCH. RPTED ON FREQ, AND PASSING THROUGH 5000 FT FOR 2500 FT, WAS ADVISED THAT OUR ASSIGNED ALT WAS 7000 FT, AND THAT THE 2500 FT CLRNC WAS FOR A FLT DSNDING INTO AUA. THERE WAS NO TFC CONFLICT. SUPPLEMENTAL INFO FROM ACN 488090: THE PF (FO) READ BACK TO CURACAO 2500 FT FOR ACR X.

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.