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LJ35 climbs through cleared altitude while flight crew distracted by pressurization system malfunction.
| Attributes | |
| ACN | 765834 |
| Time | |
| Date | 200712 |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | msl single value : 9000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Dawn |
| Aircraft 1 | |
| Controlling Facilities | tracon : zzz.tracon |
| Operator | general aviation : corporate |
| Make Model Name | Learjet 35 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | climbout : initial climbout : intermediate altitude |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : corporate |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 100 flight time total : 24000 flight time type : 620 |
| ASRS Report | 765834 |
| Person 2 | |
| Affiliation | company : corporate |
| Function | flight crew : first officer |
| Events | |
| Anomaly | aircraft equipment problem : less severe altitude deviation : overshoot non adherence : clearance |
| Independent Detector | other flight crewa other flight crewb |
| Resolutory Action | none taken : anomaly accepted |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance Environmental Factor Aircraft |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Immediately after takeoff the pressurization system went into emergency mode. The copilot and I were trying to restore the pressurization system to normal mode and we inadvertently flew through our cleared altitude of 8000 ft. This happened in about 60 seconds since we were taking off from a field elevation of 5883 ft. We leveled off at 9000 ft and contacted departure control. The controller immediately cleared us to 12000 ft and said nothing about our altitude. There was no other traffic in the area. We were both preoccupied with the problem instead of one flying and one dealing with the emergency.
Original NASA ASRS Text
Title: LJ35 CLIMBS THROUGH CLEARED ALT WHILE FLT CREW DISTRACTED BY PRESSURIZATION SYSTEM MALFUNCTION.
Narrative: IMMEDIATELY AFTER TKOF THE PRESSURIZATION SYS WENT INTO EMER MODE. THE COPLT AND I WERE TRYING TO RESTORE THE PRESSURIZATION SYS TO NORMAL MODE AND WE INADVERTENTLY FLEW THROUGH OUR CLRED ALT OF 8000 FT. THIS HAPPENED IN ABOUT 60 SECONDS SINCE WE WERE TAKING OFF FROM A FIELD ELEVATION OF 5883 FT. WE LEVELED OFF AT 9000 FT AND CONTACTED DEP CTL. THE CTLR IMMEDIATELY CLRED US TO 12000 FT AND SAID NOTHING ABOUT OUR ALT. THERE WAS NO OTHER TFC IN THE AREA. WE WERE BOTH PREOCCUPIED WITH THE PROB INSTEAD OF ONE FLYING AND ONE DEALING WITH THE EMER.
Data retrieved from NASA's ASRS site as of January 2009 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.