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Captain of air carrier medium large transport complaint about getting a GPWS warning triggered by glide slope needle as he was flying a visual localizer back course approach to runway 27 at mci.
| Attributes | |
| ACN | 182960 |
| Time | |
| Date | 199107 |
| Day | Mon |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : mci |
| State Reference | MO |
| Altitude | agl bound lower : 400 agl bound upper : 600 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : mci |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Flight Phase | descent : approach descent other landing other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time total : 8800 |
| ASRS Report | 182960 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Events | |
| Anomaly | other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified |
| Resolutory Action | none taken : anomaly accepted |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | other |
| Situations | |
| Navigational Aid | Unspecified |
Narrative:
On visibility approach to runway 27 at mci, using the localizer back course approach as a backup, the G/south needle is plainly in view (no G/south flag as your might expect): if the descent is made in accordance with the visibility approach slope indicator, the GPWS sounds 'G/south' due to the G/south needle being 1-2 dots off center (at about 400-600' AGL). I fly to mci rather often, and every time I have flown the approach the GPWS had sounded due to the spurious G/south needle indication. It is not of any serious consequence during VFR conditions, but is certainly annoying. In instrument conditions, it would be very distracting.
Original NASA ASRS Text
Title: CAPT OF ACR MLG COMPLAINT ABOUT GETTING A GPWS WARNING TRIGGERED BY GLIDE SLOPE NEEDLE AS HE WAS FLYING A VISUAL LOC BC APCH TO RWY 27 AT MCI.
Narrative: ON VIS APCH TO RWY 27 AT MCI, USING THE LOC BC APCH AS A BACKUP, THE G/S NEEDLE IS PLAINLY IN VIEW (NO G/S FLAG AS YOUR MIGHT EXPECT): IF THE DSNT IS MADE IN ACCORDANCE WITH THE VIS APCH SLOPE INDICATOR, THE GPWS SOUNDS 'G/S' DUE TO THE G/S NEEDLE BEING 1-2 DOTS OFF CTR (AT ABOUT 400-600' AGL). I FLY TO MCI RATHER OFTEN, AND EVERY TIME I HAVE FLOWN THE APCH THE GPWS HAD SOUNDED DUE TO THE SPURIOUS G/S NEEDLE INDICATION. IT IS NOT OF ANY SERIOUS CONSEQUENCE DURING VFR CONDITIONS, BUT IS CERTAINLY ANNOYING. IN INSTRUMENT CONDITIONS, IT WOULD BE VERY DISTRACTING.
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.