Cpr light transport altitude deviation excursion from clearance altitude in response to wrong call s...

Attributes
ACN	81262
Time
Date	198801
Day	Tue
Local Time Of Day	0001 To 0600
Place
Locale Reference	atc facility : atl airport : fty
State Reference	GA
Altitude	msl bound lower : 2500 msl bound upper : 5000
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	tracon : atl tower : mlb
Operator	general aviation : corporate
Make Model Name	Light Transport, Low Wing, 2 Turbojet Eng
Flight Phase	cruise other descent other
Route In Use	enroute : on vectors
Flight Plan	IFR
Person 1
Affiliation	Other
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 111 flight time total : 15829 flight time type : 3529
ASRS Report	81262
Person 2
Function	flight crew : first officer
Qualification	pilot : atp
Events
Anomaly	altitude deviation : excursion from assigned altitude non adherence : clearance
Independent Detector	other controllera
Resolutory Action	controller : issued new clearance other
Consequence	Other
Supplementary
Primary Problem	Ambiguous
Air Traffic Incident	other

Narrative:

While descending into the atl area on the 024 degree right of the atl VOR, inside of the tegre intersection, the crew received a transmission '(call sign) des to 2500.' the copilot responded with '(call sign) out of 5000 for 2500.' several mins later the controller asked if we were at 5000'. The copilot responded, 'we are at 2500.' the controller then responded, 'you must have let down on another aircraft's clearance, climb to 3000'.' no further xmissions were made concerning the discrepancy in altitude and the aircraft was vectored to the destination airport. The incident was discussed after landing and at breakfast the next morning. We were both certain that the controller had stated our call sign when we were clrd from 5000 to 2500'. At no time did either of us hear an aircraft with similar call sign on the frequency. Neither of us heard another aircraft respond to the des clearance, however, at that time of night a controller may be working several frequencys rather than 1 primary frequency.

Original NASA ASRS Text

Title: CPR LTT ALT DEVIATION EXCURSION FROM CLRNC ALT IN RESPONSE TO WRONG CALL SIGN.

Narrative: WHILE DSNDING INTO THE ATL AREA ON THE 024 DEG R OF THE ATL VOR, INSIDE OF THE TEGRE INTXN, THE CREW RECEIVED A XMISSION '(CALL SIGN) DES TO 2500.' THE COPLT RESPONDED WITH '(CALL SIGN) OUT OF 5000 FOR 2500.' SEVERAL MINS LATER THE CTLR ASKED IF WE WERE AT 5000'. THE COPLT RESPONDED, 'WE ARE AT 2500.' THE CTLR THEN RESPONDED, 'YOU MUST HAVE LET DOWN ON ANOTHER ACFT'S CLRNC, CLB TO 3000'.' NO FURTHER XMISSIONS WERE MADE CONCERNING THE DISCREPANCY IN ALT AND THE ACFT WAS VECTORED TO THE DEST ARPT. THE INCIDENT WAS DISCUSSED AFTER LNDG AND AT BREAKFAST THE NEXT MORNING. WE WERE BOTH CERTAIN THAT THE CTLR HAD STATED OUR CALL SIGN WHEN WE WERE CLRD FROM 5000 TO 2500'. AT NO TIME DID EITHER OF US HEAR AN ACFT WITH SIMILAR CALL SIGN ON THE FREQ. NEITHER OF US HEARD ANOTHER ACFT RESPOND TO THE DES CLRNC, HOWEVER, AT THAT TIME OF NIGHT A CTLR MAY BE WORKING SEVERAL FREQS RATHER THAN 1 PRIMARY 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.

Cpr light transport altitude deviation excursion from clearance altitude in response to wrong call sign.