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Altitude deviation altitude overshot - captain starts to leveloff, but then continues climb above assigned altitude.
| Attributes | |
| ACN | 301744 |
| Time | |
| Date | 199504 |
| Day | Sat |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : sfo |
| State Reference | CA |
| Altitude | msl bound lower : 4000 msl bound upper : 4700 |
| Environment | |
| Flight Conditions | Mixed |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : oak |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | departure other departure sid : sid enroute : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 200 flight time total : 9000 flight time type : 3300 |
| ASRS Report | 301744 |
| 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 controllera other flight crewa |
| Resolutory Action | controller : issued new clearance |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Aircraft was originally cleared to FL230. After switching to departure control ATC advised 'stop climb at 4000 ft' due to traffic at 5000 ft approximately 5 mi distant. Standard altitude callouts made, ie, 3000 ft for 4000 ft. Captain was flying. First officer also called level at 4000 ft and noted aircraft will in a positive climb. Captain responded by pushing nose down. First officer was then distracted by ATC calling out conflicting traffic and a request to turn to 270 degree heading. First officer set new heading on mode control panel and noted aircraft at 4700 ft. ATC then called and cleared aircraft to 6000 ft. Conflicting traffic was visually sighted, but never posed a threat. Captain stated he was distracted trying to avoid some scattered clouds at the time of the incident. The high workload in the after takeoff/climb out environment plus a light aircraft with high performance engines were contributing factors in this incident.
Original NASA ASRS Text
Title: ALTDEV ALT OVERSHOT - CAPT STARTS TO LEVELOFF, BUT THEN CONTINUES CLB ABOVE ASSIGNED ALT.
Narrative: ACFT WAS ORIGINALLY CLRED TO FL230. AFTER SWITCHING TO DEP CTL ATC ADVISED 'STOP CLB AT 4000 FT' DUE TO TFC AT 5000 FT APPROX 5 MI DISTANT. STANDARD ALT CALLOUTS MADE, IE, 3000 FT FOR 4000 FT. CAPT WAS FLYING. FO ALSO CALLED LEVEL AT 4000 FT AND NOTED ACFT WILL IN A POSITIVE CLB. CAPT RESPONDED BY PUSHING NOSE DOWN. FO WAS THEN DISTRACTED BY ATC CALLING OUT CONFLICTING TFC AND A REQUEST TO TURN TO 270 DEG HDG. FO SET NEW HDG ON MODE CTL PANEL AND NOTED ACFT AT 4700 FT. ATC THEN CALLED AND CLRED ACFT TO 6000 FT. CONFLICTING TFC WAS VISUALLY SIGHTED, BUT NEVER POSED A THREAT. CAPT STATED HE WAS DISTRACTED TRYING TO AVOID SOME SCATTERED CLOUDS AT THE TIME OF THE INCIDENT. THE HIGH WORKLOAD IN THE AFTER TKOF/CLBOUT ENVIRONMENT PLUS A LIGHT ACFT WITH HIGH PERFORMANCE ENGS WERE CONTRIBUTING FACTORS IN THIS INCIDENT.
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.