<< >> NASA ASRS Report 140779, March 1990

Pilot of small transport freighter in heavy WX at night made two attempts to approach ILS 35 at den using apa ILS 35 chart. Corrected error and with radar vectors successfully approached and landed den.

Attributes
ACN	140779
Time
Date	199003
Day	Wed
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : den
State Reference	CO
Altitude	msl bound lower : 7500 msl bound upper : 7500
Environment
Flight Conditions	IMC
Light	Night
Aircraft 1
Controlling Facilities	tracon : den tower : jxn
Operator	common carrier : air taxi
Make Model Name	Small Transport, Low Wing, 2 Recip Eng
Flight Phase	descent : approach landing other
Route In Use	enroute : on vectors
Flight Plan	IFR
Person 1
Affiliation	company : air taxi
Function	flight crew : single pilot
Qualification	pilot : commercial pilot : instrument
Experience	flight time last 90 days : 200 flight time total : 2000 flight time type : 50
ASRS Report	140779
Person 2
Affiliation	government : faa
Function	controller : approach
Qualification	controller : radar
Events
Anomaly	other anomaly other other spatial deviation
Independent Detector	other other : unspecified cockpit
Resolutory Action	controller : issued new clearance other
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

On approach into denver stapleton there were several runway changes which caused me to be vectored on and off approach several times. I was finally issued a WX report of 6000+ RVR runway 35R and given vectors to the ILS runway 35R, denver stapleton. In the confusion I inadvertently opened my nos approach chart book to denver centennial 35R and proceeded to tune and identify the frequencys for the approach. Approach notified me that I was flying through the course when my indications were conflicting. He then vectored me off the approach and back on. By this time I knew something was wrong and by reviewing the approach plate carefully noticed my error. I found the correct approach plate and proceeded for vectors back to the approach for the third time. The approach was then successfully completed. Pilot workload and inattentiveness on my part initiated the error. Another factor that contributed was the fact that I had never been into denver before and was not familiar with the frequencys and airports in the vicinity of denver stapleton.

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Original NASA ASRS Text

Title: PLT OF SMT FREIGHTER IN HEAVY WX AT NIGHT MADE TWO ATTEMPTS TO APCH ILS 35 AT DEN USING APA ILS 35 CHART. CORRECTED ERROR AND WITH RADAR VECTORS SUCCESSFULLY APCHED AND LANDED DEN.

Narrative: ON APCH INTO DENVER STAPLETON THERE WERE SEVERAL RWY CHANGES WHICH CAUSED ME TO BE VECTORED ON AND OFF APCH SEVERAL TIMES. I WAS FINALLY ISSUED A WX REPORT OF 6000+ RVR RWY 35R AND GIVEN VECTORS TO THE ILS RWY 35R, DENVER STAPLETON. IN THE CONFUSION I INADVERTENTLY OPENED MY NOS APCH CHART BOOK TO DENVER CENTENNIAL 35R AND PROCEEDED TO TUNE AND IDENTIFY THE FREQS FOR THE APCH. APCH NOTIFIED ME THAT I WAS FLYING THROUGH THE COURSE WHEN MY INDICATIONS WERE CONFLICTING. HE THEN VECTORED ME OFF THE APCH AND BACK ON. BY THIS TIME I KNEW SOMETHING WAS WRONG AND BY REVIEWING THE APCH PLATE CAREFULLY NOTICED MY ERROR. I FOUND THE CORRECT APCH PLATE AND PROCEEDED FOR VECTORS BACK TO THE APCH FOR THE THIRD TIME. THE APCH WAS THEN SUCCESSFULLY COMPLETED. PLT WORKLOAD AND INATTENTIVENESS ON MY PART INITIATED THE ERROR. ANOTHER FACTOR THAT CONTRIBUTED WAS THE FACT THAT I HAD NEVER BEEN INTO DENVER BEFORE AND WAS NOT FAMILIAR WITH THE FREQS AND ARPTS IN THE VICINITY OF DENVER STAPLETON.

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.