Flight crew of a chartered piper navajo PA31 failed to maintain assigned airspeed to the OM causing ...

Attributes
ACN	467301
Time
Date	200003
Day	Sat
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : ord.airport
State Reference	IL
Altitude	msl bound lower : 3000 msl bound upper : 5000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : c90.tracon
Operator	common carrier : charter
Make Model Name	PA-31 Navajo Chieftan/Mojave/Navajo T1020
Operating Under FAR Part	Part 135
Navigation In Use	ils localizer & glide slope : 27l other ndb
Flight Phase	descent : vacating altitude descent : approach
Route In Use	approach : visual
Flight Plan	IFR
Person 1
Affiliation	company : charter
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 12 flight time total : 1840 flight time type : 12
ASRS Report	467301
Person 2
Affiliation	company : charter
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 25 flight time total : 2680 flight time type : 180
ASRS Report	468000
Events
Anomaly	non adherence : clearance other anomaly
Independent Detector	atc equipment other atc equipment : radar other controllera
Resolutory Action	controller : issued new clearance controller : issued alert
Consequence	faa : assigned or threatened penalties
Supplementary
Problem Areas	Flight Crew Human Performance ATC Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Inbound for full stop into ord. At approximately 14 DME, we were cleared for the visual approach for runway 27L. Understood clearance as follows: ord approach: 'navajo nxx cleared visual approach runway 27L, maintain 5000 ft and 170 KTS until OM, contact tower at OM.' at approximately 6.7 DME, we idented the OM with LOM passage. Waited until 61 DME (approach plate OM distance) and start a rapid slowdown and descent to make runway. Contacted tower. They asked 'can you make the runway from your present position/altitude?' we responded with yes. We slowed to 120 KTS (approach speed for navajo and started rapid descent). At approximately 4.5 DME, the tower broke us off of the approach, heading 180 degrees, 5000 ft. Approach informed us that we had violated our clearance and slowed prior to the OM. Supplemental information from acn 468000: approach control informed me my ground speed was around 80 KTS just outside of willt and that a heavy had been gaining on me. I responded that my indicated airspeed was 170 KIAS (wind was approximately 20 KTS). He disagreed. Told me to climb to 5000 ft. I was vectored around for another approach to runway 27. The approach was executed at 160 KTS, began descent from 5000 ft, contacted tower over willt, reduced airspeed to 120 KIAS and landed. In summation, I had been flying since XA00 mar/xa/00 and flew through the night and morning, having been to ord earlier during my duty period. The sun was above and behind us, washing out the liquid quartz display on the radios from direct sunlight and glare. Marker was not turned on. Ord 154 degree radial was dialed in, used the taffs LOM to identify willt. I was taking into consideration wake turbulence from the jets landing in front of me and next to me for parallel approachs on runway 27R to make sense of the clearance I thought I heard. Also, the strong winds had me concerned with the wake turbulence.

Original NASA ASRS Text

Title: FLC OF A CHARTERED PIPER NAVAJO PA31 FAILED TO MAINTAIN ASSIGNED AIRSPD TO THE OM CAUSING APCH CTLR TO BREAK OFF THEIR VISUAL APCH FOR A HVY ACFT GAINING ON RPTR.

Narrative: INBOUND FOR FULL STOP INTO ORD. AT APPROX 14 DME, WE WERE CLRED FOR THE VISUAL APCH FOR RWY 27L. UNDERSTOOD CLRNC AS FOLLOWS: ORD APCH: 'NAVAJO NXX CLRED VISUAL APCH RWY 27L, MAINTAIN 5000 FT AND 170 KTS UNTIL OM, CONTACT TWR AT OM.' AT APPROX 6.7 DME, WE IDENTED THE OM WITH LOM PASSAGE. WAITED UNTIL 61 DME (APCH PLATE OM DISTANCE) AND START A RAPID SLOWDOWN AND DSCNT TO MAKE RWY. CONTACTED TWR. THEY ASKED 'CAN YOU MAKE THE RWY FROM YOUR PRESENT POS/ALT?' WE RESPONDED WITH YES. WE SLOWED TO 120 KTS (APCH SPD FOR NAVAJO AND STARTED RAPID DSCNT). AT APPROX 4.5 DME, THE TWR BROKE US OFF OF THE APCH, HDG 180 DEGS, 5000 FT. APCH INFORMED US THAT WE HAD VIOLATED OUR CLRNC AND SLOWED PRIOR TO THE OM. SUPPLEMENTAL INFO FROM ACN 468000: APCH CTL INFORMED ME MY GND SPD WAS AROUND 80 KTS JUST OUTSIDE OF WILLT AND THAT A HVY HAD BEEN GAINING ON ME. I RESPONDED THAT MY INDICATED AIRSPD WAS 170 KIAS (WIND WAS APPROX 20 KTS). HE DISAGREED. TOLD ME TO CLB TO 5000 FT. I WAS VECTORED AROUND FOR ANOTHER APCH TO RWY 27. THE APCH WAS EXECUTED AT 160 KTS, BEGAN DSCNT FROM 5000 FT, CONTACTED TWR OVER WILLT, REDUCED AIRSPD TO 120 KIAS AND LANDED. IN SUMMATION, I HAD BEEN FLYING SINCE XA00 MAR/XA/00 AND FLEW THROUGH THE NIGHT AND MORNING, HAVING BEEN TO ORD EARLIER DURING MY DUTY PERIOD. THE SUN WAS ABOVE AND BEHIND US, WASHING OUT THE LIQUID QUARTZ DISPLAY ON THE RADIOS FROM DIRECT SUNLIGHT AND GLARE. MARKER WAS NOT TURNED ON. ORD 154 DEG RADIAL WAS DIALED IN, USED THE TAFFS LOM TO IDENT WILLT. I WAS TAKING INTO CONSIDERATION WAKE TURB FROM THE JETS LNDG IN FRONT OF ME AND NEXT TO ME FOR PARALLEL APCHS ON RWY 27R TO MAKE SENSE OF THE CLRNC I THOUGHT I HEARD. ALSO, THE STRONG WINDS HAD ME CONCERNED WITH THE WAKE TURB.

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.

Flight crew of a chartered piper navajo PA31 failed to maintain assigned airspeed to the OM causing approach controller to break off their visual approach for a heavy aircraft gaining on reporter.