Flight crew of corporate jet deviates from airspeed required by approach controller.

Attributes
ACN	119545
Time
Date	198908
Day	Fri
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : ewr
State Reference	NJ
Altitude	msl bound lower : 1800 msl bound upper : 1800
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : n90
Operator	general aviation : corporate
Make Model Name	Light Transport, Low Wing, 2 Turbojet Eng
Flight Phase	descent : approach
Flight Plan	IFR
Person 1
Affiliation	Other
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 68 flight time total : 2435 flight time type : 200
ASRS Report	119545
Person 2
Affiliation	Other
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	non adherence : clearance other anomaly
Independent Detector	other controllera
Resolutory Action	none taken : anomaly accepted
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

During the course of the approach, approach control said to maintain 170 KTS to the outer marker. I inadvertently let the airspeed slip to 150 KTS, at which point the controller asked what our speed was. Basically, I made a mistake. I think if the controller had added the words 'for spacing' after telling me to maintain 170 KTS, it would have not happened, however, it was in no way the controller's fault. No one had to go around, and I believe there was no one else on the approach, because I didn't hear anybody and they kept me on the runway all the way to the end, when I could have cleared the runway much sooner.

Original NASA ASRS Text

Title: FLT CREW OF CORPORATE JET DEVIATES FROM AIRSPEED REQUIRED BY APCH CTLR.

Narrative: DURING THE COURSE OF THE APCH, APCH CTL SAID TO MAINTAIN 170 KTS TO THE OUTER MARKER. I INADVERTENTLY LET THE AIRSPEED SLIP TO 150 KTS, AT WHICH POINT THE CTLR ASKED WHAT OUR SPEED WAS. BASICALLY, I MADE A MISTAKE. I THINK IF THE CTLR HAD ADDED THE WORDS 'FOR SPACING' AFTER TELLING ME TO MAINTAIN 170 KTS, IT WOULD HAVE NOT HAPPENED, HOWEVER, IT WAS IN NO WAY THE CTLR'S FAULT. NO ONE HAD TO GO AROUND, AND I BELIEVE THERE WAS NO ONE ELSE ON THE APCH, BECAUSE I DIDN'T HEAR ANYBODY AND THEY KEPT ME ON THE RWY ALL THE WAY TO THE END, WHEN I COULD HAVE CLRED THE RWY MUCH SOONER.

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.