An air carrier medium large transport appeared to be fast over an approach fix.

Attributes
ACN	249796
Time
Date	199308
Day	Fri
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : dqo airport : phl
State Reference	DE
Altitude	msl bound lower : 10000 msl bound upper : 10000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : phl
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Flight Phase	cruise other
Route In Use	arrival other arrival star : star
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp pilot : flight engineer
Experience	flight time last 90 days : 300 flight time total : 9200 flight time type : 1200
ASRS Report	249796
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	non adherence : published procedure non adherence : clearance other anomaly
Independent Detector	other controllera
Resolutory Action	flight crew : returned to intended course or assigned course other
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

While flying the dupont 3 arrival profile to phl on aug/fri/93, we were queried by phl approach control about our speed control over terri intersection. We had been given instructions to cross terri (dupont VOR dqo R195014) at 10000 ft, 250 KIAS. During our deceleration, the controller asked us to confirm our instructions. The pilot responsible for communications incorrectly stated we had not been given a specified clearance to cross terri at 250 KIAS, but his incorrect answer was immediately corrected by the PIC with a statement to the controller that we had in fact been instructed to be at terri at 250 KIAS. The controller remarked we were indicating a ground speed in excess of 250 KIAS beyond a point on his radar that coincided with the terri intersection. We confirmed with the controller that our in-flight pubs depicted terri intersection at the 14 DME fix on the dupont VOR and that we had been decelerating through 260 KIAS toward the target 250 KIAS at approximately 15 DME in order to be at terri (14 DME) at 250 KIAS. The controller retorted we were currently in excess of 250 KIAS at a point 6 NM beyond terri. We immediate checked our DME to ensure it was properly receiving and could find no evidence that it was malfunctioning.

Original NASA ASRS Text

Title: AN ACR MLG APPEARED TO BE FAST OVER AN APCH FIX.

Narrative: WHILE FLYING THE DUPONT 3 ARR PROFILE TO PHL ON AUG/FRI/93, WE WERE QUERIED BY PHL APCH CTL ABOUT OUR SPD CTL OVER TERRI INTXN. WE HAD BEEN GIVEN INSTRUCTIONS TO CROSS TERRI (DUPONT VOR DQO R195014) AT 10000 FT, 250 KIAS. DURING OUR DECELERATION, THE CTLR ASKED US TO CONFIRM OUR INSTRUCTIONS. THE PLT RESPONSIBLE FOR COMS INCORRECTLY STATED WE HAD NOT BEEN GIVEN A SPECIFIED CLRNC TO CROSS TERRI AT 250 KIAS, BUT HIS INCORRECT ANSWER WAS IMMEDIATELY CORRECTED BY THE PIC WITH A STATEMENT TO THE CTLR THAT WE HAD IN FACT BEEN INSTRUCTED TO BE AT TERRI AT 250 KIAS. THE CTLR REMARKED WE WERE INDICATING A GND SPD IN EXCESS OF 250 KIAS BEYOND A POINT ON HIS RADAR THAT COINCIDED WITH THE TERRI INTXN. WE CONFIRMED WITH THE CTLR THAT OUR INFLT PUBS DEPICTED TERRI INTXN AT THE 14 DME FIX ON THE DUPONT VOR AND THAT WE HAD BEEN DECELERATING THROUGH 260 KIAS TOWARD THE TARGET 250 KIAS AT APPROX 15 DME IN ORDER TO BE AT TERRI (14 DME) AT 250 KIAS. THE CTLR RETORTED WE WERE CURRENTLY IN EXCESS OF 250 KIAS AT A POINT 6 NM BEYOND TERRI. WE IMMEDIATE CHKED OUR DME TO ENSURE IT WAS PROPERLY RECEIVING AND COULD FIND NO EVIDENCE THAT IT WAS MALFUNCTIONING.

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.