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A mooney 20K descending on radar vectors failed to comply with his vector clearance when a spoiler failed to retract reducing his lateral control ability.
| Attributes | |
| ACN | 639109 |
| Time | |
| Date | 200412 |
| Day | Thu |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : las.airport |
| State Reference | NV |
| Altitude | msl single value : 5000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : ric.tower |
| Operator | general aviation : personal |
| Make Model Name | M-20 K (231) |
| Operating Under FAR Part | Part 91 |
| Navigation In Use | other vortac |
| Flight Phase | descent : approach |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | other |
| Function | flight crew : single pilot |
| Qualification | pilot : private pilot : instrument |
| Experience | flight time last 90 days : 25 flight time total : 2300 flight time type : 1600 |
| ASRS Report | 639109 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Events | |
| Anomaly | aircraft equipment problem : critical non adherence : clearance non adherence : published procedure other anomaly other spatial deviation |
| Independent Detector | other flight crewa |
| Resolutory Action | aircraft : equipment problem dissipated flight crew : regained aircraft control |
| Consequence | faa : reviewed incident with flight crew |
| Supplementary | |
| Problem Areas | Aircraft Flight Crew Human Performance |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
While on descent to vgt airport, ATC advised me to remain 10 mi west of the las VOR and descend to 4500 ft. I was at 7000 ft and activated the speed brakes. Upon reaching 5000 ft, I turned off the speed brakes to retract them. The right speed brake did not retract. At my descent speed I had a strong yaw to the right. While troubleshooting the stuck speed brake and maintaining control of the aircraft, I did not maintain the left turn required to keep me 10 mi west of the las VOR. I ended up being 2.5 mi too far to the east. I should have notified las vegas approach of my problem immediately and asked for a vector. I was overloaded and unable to fly a DME arc with the stuck speed brake pulling me to the right, while maintaining altitude and cycling the speed brake to try and retract it. I advised ATC of my problem only after they asked me why I was not flying the DME arc. Once below the freezing level the speed brake retracted normally.
Original NASA ASRS Text
Title: A MOONEY 20K DSNDING ON RADAR VECTORS FAILED TO COMPLY WITH HIS VECTOR CLRNC WHEN A SPOILER FAILED TO RETRACT REDUCING HIS LATERAL CTL ABILITY.
Narrative: WHILE ON DSCNT TO VGT ARPT, ATC ADVISED ME TO REMAIN 10 MI W OF THE LAS VOR AND DSND TO 4500 FT. I WAS AT 7000 FT AND ACTIVATED THE SPD BRAKES. UPON REACHING 5000 FT, I TURNED OFF THE SPD BRAKES TO RETRACT THEM. THE R SPD BRAKE DID NOT RETRACT. AT MY DSCNT SPD I HAD A STRONG YAW TO THE R. WHILE TROUBLESHOOTING THE STUCK SPD BRAKE AND MAINTAINING CTL OF THE ACFT, I DID NOT MAINTAIN THE L TURN REQUIRED TO KEEP ME 10 MI W OF THE LAS VOR. I ENDED UP BEING 2.5 MI TOO FAR TO THE E. I SHOULD HAVE NOTIFIED LAS VEGAS APCH OF MY PROB IMMEDIATELY AND ASKED FOR A VECTOR. I WAS OVERLOADED AND UNABLE TO FLY A DME ARC WITH THE STUCK SPD BRAKE PULLING ME TO THE R, WHILE MAINTAINING ALT AND CYCLING THE SPD BRAKE TO TRY AND RETRACT IT. I ADVISED ATC OF MY PROB ONLY AFTER THEY ASKED ME WHY I WAS NOT FLYING THE DME ARC. ONCE BELOW THE FREEZING LEVEL THE SPD BRAKE RETRACTED NORMALLY.
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.