# Accident 20001210032619A: Cessna 421B, Norman, OK, December 10, 2000 - Type: FAA accident report (Accident/Incident Data System), as reported - Date: December 10, 2000, 04:48 local time - Place: Norman, OK - Airport: University Of Oklahoma - Damage: Destroyed - Phase of flight: Final Approach-IFR - Operating rules: General operating rules (Part 91) - Location: 35.2096° N, 97.4407° W: From the FAA, an estimate near the named town, within about 3 miles - Nearby events: https://openairdocs.org/map.md?lat=35.2096&lon=-97.4407&mi=10 - Aircraft: N52KL, a cancelled registration (https://openairdocs.org/deregistered/N52KL-2005-03-08) (OpenAirDocs) - Registry model: Cessna 421B (registry code 2076014, https://openairdocs.org/model/cessna-421b) (OpenAirDocs) - Registry engine: Continental GTSIO-520-C (registry code 17035, https://openairdocs.org/engine/continental-gtsio-520-c) (OpenAirDocs) - Reported make and model: CESSNA 421B - Reported engine: CONT GTSIO520H - People aboard: 2 - Fatal injuries: 2 - Pilot flight hours: 10,000 total - NTSB investigation: [NTSB FTW01FA033](https://openairdocs.org/ntsb/FTW01FA033) (OpenAirDocs) - FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/) - Page: https://openairdocs.org/incident/20001210032619A ## Narrative As the FAA filed it, in capitals; the FAA replaces private details with ^PRIVACY DATA OMITTED^. (-23) THE A/C WAS LOST FROM RADAR AT ABOUT 4:48 AM CST. A SEARCH WAS STARTED BY NORMAN POLICE DEPT. AND OU POLICE DEPT. AT ABOUT 5:20 AM. THE A/C WAS FOUND AT 11:04 AM BY TWO EMPLOYEES OF AIRMAN FLIGHT SCHOOL INC., IN A FIELD SOUTHWEST OF THE INTERSECTION OF W TECUMSEH RD AND 12RH AVE NW IN NORMAN, OF. THIS IS ABOUT ONE MILE NORTHEAST OF THE MAX WESTHEIMER AIRPORT. THE A/C WAS FOUND ON ITS BELLY, MOSTLY INTACT BETWEEN SOME SMALL TREES WITH THE NOSE POINTED ON A HEADING OF ABOUT 330 DEGREES. THE NOSE OF THE A/C WAS BROKEN AT THE PRESSURE BULKHEAD ABOUT 60 PERCENT AROUND ITS CIRCUNFERENCE. THE TAIL WAS BROKEN AT THE REAR PRESSURE BULKHEAD ABOUT 75 PERCENT OF ITS CIRCUMFERENCE. THE LANDING GEAR WAS DOWN WITH THE MAIN STRUTS PROTRUDING THROUGH THE TOP OF THE NACELLES. THE FUEL TANKS WERE DAMAGED AND THERE WAS A LARGE PUDDLE OF FUEL BEHIND THE RIGHT WING AND THE GROUND WAS DAMP WITH FUEL BEHIND THE LEFT WING. THREE BLADED PROPELLERS WERE INSTALLED WITH THE LOWER BLADES OF EACH PROP BENT TO THE REAR. THE TREES THAT THE A/C WAS BETWEEN HAD BRANCHES THAT APPEARED TO BE CUT BY THE PROPELLERS. (.4) ACCORDING TO AIR TRAFFIC CONTROL COMMUNICATION AND RADAR DATA, THE FLIGHT WAS VFR OVER THE TOP, APPROXIMATELY 7,900 FEET, AND REQUESTED AN IFR CLEARANCE TO THE DESTINATION AIRPORT. THE FLIGHT WAS ISSUED AN IFR CLEARANCE AND, SUBSEQUENTLY, WAS CLEARED FOR THE LOCALIZER RUNWAY 3 APPROACH. RADAR DATA INDICATES THAT THE AIRPLANE INTERCEPTED THE LOCALIZER AND BEGAN TRACKING INBOUND. ONCE THE AIRPLANE REACHED THE FINAL APPROACH FIX, THE AIRPLANE ENTERED A SHALLOW DESCENT, BUT DID NOT REACH THE MDA UNTIL AFTER PASSING THE MISSED APPROACH POINT (MAP). THE AIRPLANE FLEW PAST THE MAP, CONTINUED TO DESCEND AND OVER FLEW THE RUNWAY. THE FINAL RADAR RETURN WAS CAPTURED AT 1,200 FEET AND ONE MILE NORTHEAST OF THE AIRPORT, WHERE THE AIRPLANE WAS LATER LOCATED. THE WEATHER OBSERVATION FACILITY LOCATED AT THE AIRPORT REPORTED THAT, 11 MINUTES BEFORE THE ACCIDENT, THE WINDS WERE FROM 140 DEGREES AT 6 KNOTS, CEILING 200 FEET OVERCAST, VISIBILITY 1/4 MILES IN FOG, TEMPERATURE 45 DEGREES FAHRENHEIT AND DEW POINT 45 DEGREES FAHRENHEIT. A PERSON WHO WAS AT THE AIRPORT AT THE TIME OF THE ACCIDENT REPORTED THAT THE "CLOUDS WERE LOW AND VISIBILITY WAS POOR." TOXICOLOGICAL TESTING PERFORMED ON THE PILOTBY THE FAA'S CIVIL AEROMEDICAL INSTITUTE, OKLAHOMA CITY, OKLAHOMA, REVEALED THE FOLLOWING: 0.121 (UG/ML, UG/G) AMPHETAMINE DETECTED IN BLOOD, 0.419 (UG/ML, UG/G) AMPHETAMINE DETECTED IN LIVER, AMPHETAMINE DETECTED IN KIDNEY, 4.595 (UG/ML, UG/G) METHAMPHETAMINE DETECTED IN BLOOD, 5.34 (UG/ML, UG/G) METHAMPHETAMINE DETECTED IN LIVER, 3.715 (UG/ML, UG/G) METHAMPHETAMINE DETECTED IN KIDNEY, PSEUDOEPHEDRINE PRESENT IN BLOOD, AND PSEUDOEPHEDRINE PRESENT IN LIVER. THE AIRFRAME AND ENGINES WERE EXAMINED AND NO ANOMALIES WERE DISCOVERED THAT WOULD HAVE EFFECTED OPERATION OF THE FLIGHT. ## The NTSB's investigation of this event (1) From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. - [NTSB FTW01FA033](https://openairdocs.org/ntsb/FTW01FA033), Dec 10, 2000: Cessna 421B (N52KL), Norman, OK, destroyed, 2 fatal. Probable cause: the pilot's failure to follow the instrument approach procedure and his continued descent below the prescribed minimum descent altitude (MDA). Contributory factors were the pilot's physical… From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. For accidents, the NTSB's own investigation is the fuller record. --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.