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An MD80 autoplt malfunctions and the crew suffers a temporary loss of aircraft control and an altitude excursion while on approach to lga, ny.
| Attributes | |
| ACN | 517184 |
| Time | |
| Date | 200107 |
| Day | Sun |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : lga.airport |
| State Reference | NY |
| Altitude | msl single value : 2000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : n90.tracon tower : hou.tower |
| Operator | common carrier : air carrier |
| Make Model Name | MD-80 Series (DC-9-80) Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : approach |
| Route In Use | arrival : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 180 flight time total : 1000 flight time type : 5000 |
| ASRS Report | 517184 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Events | |
| Anomaly | aircraft equipment problem : critical altitude deviation : excursion from assigned altitude non adherence : clearance other anomaly |
| Independent Detector | other flight crewa other flight crewb |
| Resolutory Action | controller : issued alert flight crew : returned to assigned altitude flight crew : overrode automation flight crew : regained aircraft control |
| Consequence | other Other |
| Supplementary | |
| Problem Areas | Aircraft |
| Primary Problem | Aircraft |
| Air Traffic Incident | Pilot Deviation |
Narrative:
On approach to lga, autoplt pitched down rapidly causing altitude loss. Autoplt was disconnected and altitude regained. Controller was asking 'verify you're at 2000 ft.' answer was 'yes' because by that time, all altitude loss was regained. Autoplt problem was noted in aircraft logbook for mechanic's inspection. No previous problems were encountered on this flight from autoplt.
Original NASA ASRS Text
Title: AN MD80 AUTOPLT MALFUNCTIONS AND THE CREW SUFFERS A TEMPORARY LOSS OF ACFT CTL AND AN ALT EXCURSION WHILE ON APCH TO LGA, NY.
Narrative: ON APCH TO LGA, AUTOPLT PITCHED DOWN RAPIDLY CAUSING ALT LOSS. AUTOPLT WAS DISCONNECTED AND ALT REGAINED. CTLR WAS ASKING 'VERIFY YOU'RE AT 2000 FT.' ANSWER WAS 'YES' BECAUSE BY THAT TIME, ALL ALT LOSS WAS REGAINED. AUTOPLT PROB WAS NOTED IN ACFT LOGBOOK FOR MECH'S INSPECTION. NO PREVIOUS PROBS WERE ENCOUNTERED ON THIS FLT FROM AUTOPLT.
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.