<< >> NASA ASRS Report 502020, February 2001

EMB145 first officer descending to 4000 ft until established on the ILS approach as directed by approach controller, and then was told maintain 5000 ft.

Attributes
ACN	502020
Time
Date	200102
Day	Sat
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : dfw.airport
State Reference	TX
Altitude	msl bound lower : 4000 msl bound upper : 5000
Environment
Flight Conditions	Mixed
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : d10.tracon
Operator	common carrier : air carrier
Make Model Name	EMB ERJ 145 ER&LR
Operating Under FAR Part	Part 121
Navigation In Use	ils localizer & glide slope : 17c
Flight Phase	descent : intermediate altitude
Route In Use	arrival : on vectors
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : private pilot : multi engine pilot : instrument pilot : commercial
Experience	flight time last 90 days : 120 flight time total : 3300 flight time type : 800
ASRS Report	502020
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	altitude deviation : excursion from assigned altitude non adherence : clearance
Independent Detector	atc equipment other atc equipment : radar other controllera
Resolutory Action	controller : issued alert flight crew : returned to assigned altitude
Supplementary
Problem Areas	ATC Human Performance Flight Crew Human Performance
Primary Problem	ATC Human Performance
Air Traffic Incident	other

Narrative:

Told to intercept GS for ILS runway 17C at dfw and to descend and maintain 4000 ft until established, cleared for ILS approach. We started our descent and intercepted the localizer and proceeded the approach when approach control told us we needed to maintain 5000 ft. We descended back to 5000 ft and held the approach

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Original NASA ASRS Text

Title: EMB145 FO DSNDING TO 4000 FT UNTIL ESTABLISHED ON THE ILS APCH AS DIRECTED BY APCH CTLR, AND THEN WAS TOLD MAINTAIN 5000 FT.

Narrative: TOLD TO INTERCEPT GS FOR ILS RWY 17C AT DFW AND TO DSND AND MAINTAIN 4000 FT UNTIL ESTABLISHED, CLRED FOR ILS APCH. WE STARTED OUR DSCNT AND INTERCEPTED THE LOC AND PROCEEDED THE APCH WHEN APCH CTL TOLD US WE NEEDED TO MAINTAIN 5000 FT. WE DSNDED BACK TO 5000 FT AND HELD THE APCH

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.