<< >> NASA ASRS Report 470220, April 2000

A DHC8 captain reported that he experienced erroneous GS information at mfr, or, causing him to arrive over the field at 2500 ft MSL.

Attributes
ACN	470220
Time
Date	200004
Day	Sat
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : mfr.airport
State Reference	OR
Altitude	msl single value : 4000
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : mfr.tower
Operator	common carrier : air carrier
Make Model Name	Dash 8 Series Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	descent : approach
Route In Use	approach : instrument precision arrival : vfr
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : multi engine
Experience	flight time last 90 days : 200 flight time total : 6400 flight time type : 1000
ASRS Report	470220
Person 2
Function	flight crew : first officer
Qualification	pilot : multi engine pilot : instrument pilot : commercial
Events
Anomaly	aircraft equipment problem : less severe non adherence : company policies non adherence : clearance other anomaly
Independent Detector	other flight crewa other flight crewb
Resolutory Action	none taken : anomaly accepted
Consequence	other
Supplementary
Problem Areas	Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance

Narrative:

Cleared for the ILS DME 14 at medford. GS gave erroneous indications so that we ended up over the field at 2500 ft MSL. Tower told us we had passed the field. As we were in VFR conditions, we circled around and landed on runway 32. No conflicts arose.

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Original NASA ASRS Text

Title: A DHC8 CAPT RPTED THAT HE EXPERIENCED ERRONEOUS GS INFO AT MFR, OR, CAUSING HIM TO ARRIVE OVER THE FIELD AT 2500 FT MSL.

Narrative: CLRED FOR THE ILS DME 14 AT MEDFORD. GS GAVE ERRONEOUS INDICATIONS SO THAT WE ENDED UP OVER THE FIELD AT 2500 FT MSL. TWR TOLD US WE HAD PASSED THE FIELD. AS WE WERE IN VFR CONDITIONS, WE CIRCLED AROUND AND LANDED ON RWY 32. NO CONFLICTS AROSE.

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.