First officer of air carrier large transport aircraft lost control of aircraft during landing touchdown and the aircraft's right landing gear left the runway.

Home

Browse by month

Random

Latest

About

Contact

Attributes
ACN	227550
Time
Date	199212
Day	Tue
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : mbj
State Reference	FO
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	Mixed
Light	Night
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Large Transport, Low Wing, 3 Turbojet Eng
Flight Phase	landing other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : flight engineer pilot : cfi
Experience	flight time last 90 days : 101 flight time total : 6664 flight time type : 3388
ASRS Report	227550
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : flight engineer pilot : atp
Experience	flight time last 90 days : 210 flight time total : 4000 flight time type : 830
ASRS Report	227614
Events
Anomaly	inflight encounter : weather other anomaly other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	flight crew : regained aircraft control
Consequence	Other
Supplementary
Primary Problem	Weather
Air Traffic Incident	other

Narrative:

First officer was flying VOR approach to runway 7. Runway was visible from 4 mi out. Rain was reported at airport with a slight left crosswind. Just at touchdown rain intensity increased suddenly, aircraft hydroplaned and the right main gear departed the right edge of the runway. I believe a small downburst may have occurred based on the aircraft performance for the last 10 ft of the landing maneuver and the sudden increase in rain. A normal flare from a normal approach did not produce a normal decrease in sink rate. Also the winds reported on final should not have been sufficient to produce the sideways velocity component that resulted in the aircraft leaving the runway. The sudden decrease in visibility to about 600 ft may have contributed to the loss in directional control. Of interest is that all the clouds in the area appeared to be fairly low (we were on top at 3000 ft for part of the approach). The clouds were broken with visibility at least 12 mi during part of the approach. Also, there were no strong radar echoes in the terminal area.

Original NASA ASRS Text

Title: FO OF ACR LGT ACFT LOST CTL OF ACFT DURING LNDG TOUCHDOWN AND THE ACFT'S R LNDG GEAR LEFT THE RWY.

Narrative: FO WAS FLYING VOR APCH TO RWY 7. RWY WAS VISIBLE FROM 4 MI OUT. RAIN WAS RPTED AT ARPT WITH A SLIGHT L XWIND. JUST AT TOUCHDOWN RAIN INTENSITY INCREASED SUDDENLY, ACFT HYDROPLANED AND THE R MAIN GEAR DEPARTED THE R EDGE OF THE RWY. I BELIEVE A SMALL DOWNBURST MAY HAVE OCCURRED BASED ON THE ACFT PERFORMANCE FOR THE LAST 10 FT OF THE LNDG MANEUVER AND THE SUDDEN INCREASE IN RAIN. A NORMAL FLARE FROM A NORMAL APCH DID NOT PRODUCE A NORMAL DECREASE IN SINK RATE. ALSO THE WINDS RPTED ON FINAL SHOULD NOT HAVE BEEN SUFFICIENT TO PRODUCE THE SIDEWAYS VELOCITY COMPONENT THAT RESULTED IN THE ACFT LEAVING THE RWY. THE SUDDEN DECREASE IN VISIBILITY TO ABOUT 600 FT MAY HAVE CONTRIBUTED TO THE LOSS IN DIRECTIONAL CTL. OF INTEREST IS THAT ALL THE CLOUDS IN THE AREA APPEARED TO BE FAIRLY LOW (WE WERE ON TOP AT 3000 FT FOR PART OF THE APCH). THE CLOUDS WERE BROKEN WITH VISIBILITY AT LEAST 12 MI DURING PART OF THE APCH. ALSO, THERE WERE NO STRONG RADAR ECHOES IN THE TERMINAL AREA.

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.