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MD80S aircraft in climb. PF, first officer switched to vertical speed mode just prior to altitude capture so the altitude restr dropped out and the aircraft climbed through assigned by 250 ft. First officer returned aircraft to assigned altitude.
| Attributes | |
| ACN | 357550 |
| Time | |
| Date | 199701 |
| Day | Sun |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : dfw |
| State Reference | TX |
| Altitude | msl bound lower : 24000 msl bound upper : 24250 |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zfw tracon : edw |
| Operator | common carrier : air carrier |
| Make Model Name | MD-80 Super 80 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other |
| Flight Phase | climbout : intermediate altitude cruise other cruise other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| ASRS Report | 357550 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | altitude deviation : overshoot non adherence : clearance |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : returned to intended course or assigned course |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
On jan 1997, flight from dfw to lax, first officer flying. During climb out, autoplt on IAS, just prior to level off at FL240 and after altitude capture first officer switched to vertical speed, causing altitude capture to drop and aircraft went through FL240. First officer engaged altitude hold, aircraft ballooned about 250 ft high and went back to FL240.
Original NASA ASRS Text
Title: MD80S ACFT IN CLB. PF, FO SWITCHED TO VERT SPD MODE JUST PRIOR TO ALT CAPTURE SO THE ALT RESTR DROPPED OUT AND THE ACFT CLBED THROUGH ASSIGNED BY 250 FT. FO RETURNED ACFT TO ASSIGNED ALT.
Narrative: ON JAN 1997, FLT FROM DFW TO LAX, FO FLYING. DURING CLBOUT, AUTOPLT ON IAS, JUST PRIOR TO LEVEL OFF AT FL240 AND AFTER ALT CAPTURE FO SWITCHED TO VERT SPD, CAUSING ALT CAPTURE TO DROP AND ACFT WENT THROUGH FL240. FO ENGAGED ALT HOLD, ACFT BALLOONED ABOUT 250 FT HIGH AND WENT BACK TO FL240.
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.