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An arrival S80 flight crew does not execute a go around when their aircraft displays a windshear advisory at 1000 ft AGL. At 50 ft, during the flare, other, more obvious signs, including airspeed changes, occur, and the crew executes a missed approach.
| Attributes | |
| ACN | 411810 |
| Time | |
| Date | 199808 |
| Day | Wed |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : phl |
| State Reference | PA |
| Altitude | agl bound lower : 50 agl bound upper : 1000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : phl |
| Operator | common carrier : air carrier |
| Make Model Name | MD-80 Super 80 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other |
| Flight Phase | descent : approach landing : missed approach |
| Route In Use | approach : visual enroute : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| ASRS Report | 411810 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | inflight encounter other non adherence : published procedure |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified |
| Resolutory Action | flight crew : exited adverse environment other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Weather |
| Air Traffic Incident | Pilot Deviation |
Narrative:
We were cleared for a visual approach to runway 27R at phl with the first officer flying the approach. The WX was clear with surface winds reported at 340 degrees/7 KTS. After configuring the aircraft and at about 1000 ft AGL, we received a windshear warning with the associated red lights and fly-up display on the attitude display. There was no airspeed or other deviation to indicate that an actual shear was present. However at approximately 50 ft when the first officer was about to flare we had an instantaneous increase of 20-30 KTS and the aircraft ballooned rapidly. The first officer elected to go around and I concurred. We landed a few mins later with no further incidents.
Original NASA ASRS Text
Title: AN ARR S80 FLC DOES NOT EXECUTE A GAR WHEN THEIR ACFT DISPLAYS A WINDSHEAR ADVISORY AT 1000 FT AGL. AT 50 FT, DURING THE FLARE, OTHER, MORE OBVIOUS SIGNS, INCLUDING AIRSPD CHANGES, OCCUR, AND THE CREW EXECUTES A MISSED APCH.
Narrative: WE WERE CLRED FOR A VISUAL APCH TO RWY 27R AT PHL WITH THE FO FLYING THE APCH. THE WX WAS CLR WITH SURFACE WINDS RPTED AT 340 DEGS/7 KTS. AFTER CONFIGURING THE ACFT AND AT ABOUT 1000 FT AGL, WE RECEIVED A WINDSHEAR WARNING WITH THE ASSOCIATED RED LIGHTS AND FLY-UP DISPLAY ON THE ATTITUDE DISPLAY. THERE WAS NO AIRSPD OR OTHER DEV TO INDICATE THAT AN ACTUAL SHEAR WAS PRESENT. HOWEVER AT APPROX 50 FT WHEN THE FO WAS ABOUT TO FLARE WE HAD AN INSTANTANEOUS INCREASE OF 20-30 KTS AND THE ACFT BALLOONED RAPIDLY. THE FO ELECTED TO GAR AND I CONCURRED. WE LANDED A FEW MINS LATER WITH NO FURTHER INCIDENTS.
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.