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Pilot of small transport received 3 route and altitude changes rapidly, thus overshot altitude assignment.
| Attributes | |
| ACN | 135724 |
| Time | |
| Date | 199001 |
| Day | Wed |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | atc facility : mod |
| State Reference | CA |
| Altitude | msl bound lower : 5000 msl bound upper : 5500 |
| Environment | |
| Flight Conditions | Mixed |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | tracon : mer |
| Operator | general aviation : personal |
| Make Model Name | Small Transport, Low Wing, 2 Recip Eng |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | Other |
| Function | flight crew : single pilot |
| Qualification | pilot : commercial pilot : instrument pilot : cfi |
| Experience | flight time last 90 days : 80 flight time total : 820 flight time type : 70 |
| ASRS Report | 135724 |
| Person 2 | |
| Affiliation | government : military |
| Function | controller : approach |
| Qualification | pilot : military |
| Events | |
| Anomaly | altitude deviation : overshoot |
| Independent Detector | other other : unspecified cockpit |
| Resolutory Action | none taken : anomaly accepted |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
We were on an IFR flight plan from mod to wvi. We got our clearance on the ground and it contained an altitude restriction of 2500'. After being turned toward the victor arwy we received a new altitude restriction of 3000' and were told to expect a final of 9000'. We were climbing at about 150 KIAS and 1200 fps. Before leveling at 3000' we received a new route and an altitude of 5000'. I was flying and studying the map as best I could--then we got another route. Again looking at the map I missed leveling at 5000'. I noticed as I approached 5500'. I pulled power and began a very rapid descent to 5000'. I think that this was a situation where ATC somewhat overloaded the crew. In a matter of about 6-7 mins we received 3 different routes and 3 different altitude restrictions with a final altitude to expect. Things were very busy in the cockpit. I think I took very quick action, once I noticed the altitude--and I really think ATC contributed to the problem.
Original NASA ASRS Text
Title: PLT OF SMT RECEIVED 3 ROUTE AND ALT CHANGES RAPIDLY, THUS OVERSHOT ALT ASSIGNMENT.
Narrative: WE WERE ON AN IFR FLT PLAN FROM MOD TO WVI. WE GOT OUR CLRNC ON THE GND AND IT CONTAINED AN ALT RESTRICTION OF 2500'. AFTER BEING TURNED TOWARD THE VICTOR ARWY WE RECEIVED A NEW ALT RESTRICTION OF 3000' AND WERE TOLD TO EXPECT A FINAL OF 9000'. WE WERE CLBING AT ABOUT 150 KIAS AND 1200 FPS. BEFORE LEVELING AT 3000' WE RECEIVED A NEW RTE AND AN ALT OF 5000'. I WAS FLYING AND STUDYING THE MAP AS BEST I COULD--THEN WE GOT ANOTHER RTE. AGAIN LOOKING AT THE MAP I MISSED LEVELING AT 5000'. I NOTICED AS I APCHED 5500'. I PULLED PWR AND BEGAN A VERY RAPID DSCNT TO 5000'. I THINK THAT THIS WAS A SITUATION WHERE ATC SOMEWHAT OVERLOADED THE CREW. IN A MATTER OF ABOUT 6-7 MINS WE RECEIVED 3 DIFFERENT ROUTES AND 3 DIFFERENT ALT RESTRICTIONS WITH A FINAL ALT TO EXPECT. THINGS WERE VERY BUSY IN THE COCKPIT. I THINK I TOOK VERY QUICK ACTION, ONCE I NOTICED THE ALT--AND I REALLY THINK ATC CONTRIBUTED TO THE PROB.
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.