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Flight crew of a B747-100 overshot climb altitude due to not programming the autoplt altitude capture correctly.
| Attributes | |
| ACN | 340270 |
| Time | |
| Date | 199607 |
| Day | Mon |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : rod |
| State Reference | OH |
| Altitude | msl bound lower : 20000 msl bound upper : 20320 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zid |
| Operator | common carrier : air carrier |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Operating Under FAR Part | Part 135 |
| Navigation In Use | Other |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Helicopter |
| Operating Under FAR Part | Part 135 |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 150 flight time total : 6100 flight time type : 550 |
| ASRS Report | 340270 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| 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 climb out from sdf on our way to ewr we were deviating around several thunderstorm build-ups along with being vectored around descending traffic. We had been cleared to FL230, as we passed FL185 center asked us to stop at FL200. Autoplt was engaged with FL200 in the altitude window. The altitude captured but autoplt was slow to level. I noticed the altitude going through FL201 and pushed forward on the yoke until I felt the captain pushing also, then I let him handle it. We were not aggressive enough as the altimeter went to 20320 ft. Contributing factors: this airplane is one we lease and has some differences on the autoplt control panel. I was not aggressive enough, even though I knew the captain was flying this trip to get his 3 lndgs in 90 days (wasn't as current as he could have been). Both of us were spending too much time looking outside at WX and traffic and relying on the autoplt too much.
Original NASA ASRS Text
Title: FLC OF A B747-100 OVERSHOT CLB ALT DUE TO NOT PROGRAMMING THE AUTOPLT ALT CAPTURE CORRECTLY.
Narrative: ON CLBOUT FROM SDF ON OUR WAY TO EWR WE WERE DEVIATING AROUND SEVERAL TSTM BUILD-UPS ALONG WITH BEING VECTORED AROUND DSNDING TFC. WE HAD BEEN CLRED TO FL230, AS WE PASSED FL185 CTR ASKED US TO STOP AT FL200. AUTOPLT WAS ENGAGED WITH FL200 IN THE ALT WINDOW. THE ALT CAPTURED BUT AUTOPLT WAS SLOW TO LEVEL. I NOTICED THE ALT GOING THROUGH FL201 AND PUSHED FORWARD ON THE YOKE UNTIL I FELT THE CAPT PUSHING ALSO, THEN I LET HIM HANDLE IT. WE WERE NOT AGGRESSIVE ENOUGH AS THE ALTIMETER WENT TO 20320 FT. CONTRIBUTING FACTORS: THIS AIRPLANE IS ONE WE LEASE AND HAS SOME DIFFERENCES ON THE AUTOPLT CTL PANEL. I WAS NOT AGGRESSIVE ENOUGH, EVEN THOUGH I KNEW THE CAPT WAS FLYING THIS TRIP TO GET HIS 3 LNDGS IN 90 DAYS (WASN'T AS CURRENT AS HE COULD HAVE BEEN). BOTH OF US WERE SPENDING TOO MUCH TIME LOOKING OUTSIDE AT WX AND TFC AND RELYING ON THE AUTOPLT TOO MUCH.
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.