Crossing restriction missed not acknowledged by the flight crew.

Attributes
ACN	87053
Time
Date	198805
Day	Sat
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : dfw
State Reference	TX
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	Marginal
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : dfw
Operator	common carrier : air carrier
Make Model Name	Heavy Transport, Low Wing, 4 Turbojet Eng
Flight Phase	descent other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : cfi pilot : commercial pilot : instrument pilot : flight engineer
Experience	flight time last 90 days : 120 flight time total : 7000
ASRS Report	87053
Person 2
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	altitude deviation : crossing restriction not met
Independent Detector	other controllera
Resolutory Action	none taken : detected after the fact
Consequence	faa : reviewed incident with flight crew
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

After landing at the dfw airport we were requested to contact the dfw TRACON supervisor. The captain did and was informed that we missed a clearance limit of boids intersection at 9000'. The supervisor informed the captain that the clearance was issued and acknowledged. None of the three crewmen on the flight deck (all of whom were wearing headsets) heard such clearance or acknowledgement. Callback conversation with reporter revealed the following information: reporter did not get a report from the captain who talked with the controller. Has heard that after the tapes were heard the controller elected to drop the incident. At no time were they given a vector or any other instructions reference a possible conflict. Feels it was more than likely a case where the readback was made by another aircraft. Had received no information that a similar callsign aircraft was on frequency.

Original NASA ASRS Text

Title: CROSSING RESTRICTION MISSED NOT ACKNOWLEDGED BY THE FLT CREW.

Narrative: AFTER LNDG AT THE DFW ARPT WE WERE REQUESTED TO CONTACT THE DFW TRACON SUPERVISOR. THE CAPT DID AND WAS INFORMED THAT WE MISSED A CLRNC LIMIT OF BOIDS INTERSECTION AT 9000'. THE SUPERVISOR INFORMED THE CAPT THAT THE CLRNC WAS ISSUED AND ACKNOWLEDGED. NONE OF THE THREE CREWMEN ON THE FLT DECK (ALL OF WHOM WERE WEARING HEADSETS) HEARD SUCH CLRNC OR ACKNOWLEDGEMENT. CALLBACK CONVERSATION WITH REPORTER REVEALED THE FOLLOWING INFORMATION: REPORTER DID NOT GET A REPORT FROM THE CAPT WHO TALKED WITH THE CTLR. HAS HEARD THAT AFTER THE TAPES WERE HEARD THE CTLR ELECTED TO DROP THE INCIDENT. AT NO TIME WERE THEY GIVEN A VECTOR OR ANY OTHER INSTRUCTIONS REFERENCE A POSSIBLE CONFLICT. FEELS IT WAS MORE THAN LIKELY A CASE WHERE THE READBACK WAS MADE BY ANOTHER ACFT. HAD RECEIVED NO INFORMATION THAT A SIMILAR CALLSIGN ACFT WAS ON 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.