<< >> NASA ASRS Report 431970, March 1999

A B727 overshoots its assigned altitude during a descent into den, co. The crew had been assigned a new runway by approach controller.

Attributes
ACN	431970
Time
Date	199903
Day	Tue
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : den.airport
State Reference	CO
Altitude	msl bound lower : 12300 msl bound upper : 13000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : d01.tracon
Operator	common carrier : air carrier
Make Model Name	B727 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Navigation In Use	ils localizer & glide slope : 35l
Flight Phase	descent : intermediate altitude descent : approach
Route In Use	approach : visual arrival : on vectors
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : second officer
Qualification	pilot : atp pilot : flight engineer
Experience	flight time last 90 days : 225 flight time total : 5000 flight time type : 1100
ASRS Report	431970
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 210 flight time total : 9000 flight time type : 1000
ASRS Report	431973
Events
Anomaly	altitude deviation : overshoot non adherence : clearance non adherence : company policies other anomaly other
Independent Detector	other flight crewa
Resolutory Action	flight crew : returned to original clearance
Supplementary
Problem Areas	ATC Human Performance Airport Flight Crew Human Performance Aircraft
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Clearance was to descend to 13000 ft for a visual approach runway 35R (den). Nearing leveloff altitude, I was identing the localizer identify runway 35R as it was to be used for backup purposes. Radio call to expect visual approach to runway 35L. I immediately went to identify the localizer runway 35L since I was still listening to the NAVAID, then I reaccomplished the approach checklist. Captain realized he had descended through the leveloff altitude and immediately corrected the altitude deviation. (Lowest altitude I saw was 12300 ft.) supplemental information from acn 431973: at about 13800 ft MSL ATC changed runways to 35L.

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Original NASA ASRS Text

Title: A B727 OVERSHOOTS ITS ASSIGNED ALT DURING A DSCNT INTO DEN, CO. THE CREW HAD BEEN ASSIGNED A NEW RWY BY APCH CTLR.

Narrative: CLRNC WAS TO DSND TO 13000 FT FOR A VISUAL APCH RWY 35R (DEN). NEARING LEVELOFF ALT, I WAS IDENTING THE LOC IDENT RWY 35R AS IT WAS TO BE USED FOR BACKUP PURPOSES. RADIO CALL TO EXPECT VISUAL APCH TO RWY 35L. I IMMEDIATELY WENT TO IDENT THE LOC RWY 35L SINCE I WAS STILL LISTENING TO THE NAVAID, THEN I REACCOMPLISHED THE APCH CHKLIST. CAPT REALIZED HE HAD DSNDED THROUGH THE LEVELOFF ALT AND IMMEDIATELY CORRECTED THE ALTDEV. (LOWEST ALT I SAW WAS 12300 FT.) SUPPLEMENTAL INFO FROM ACN 431973: AT ABOUT 13800 FT MSL ATC CHANGED RWYS TO 35L.

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.