# Accident 20010614013599A: Gulstm 114B, Okmulgee, OK, June 14, 2001 - Type: FAA accident report (Accident/Incident Data System), as reported - Date: June 14, 2001, 13:15 local time - Place: Okmulgee, OK - Airport: Okmulgee Municipal Airport - Damage: Substantial damage - Phase of flight: Fcd/Prec Ldg From Cruise - Operating rules: General operating rules (Part 91) - Location: 35.6303° N, 95.9505° W: From the FAA, an estimate near the named town, within about 3 miles - Nearby events: https://openairdocs.org/map.md?lat=35.6303&lon=-95.9505&mi=10 - Aircraft: N114BW, registered now (https://openairdocs.org/aircraft/N114BW) (OpenAirDocs) - Registry model: Commander 114-B (registry code 0145001, https://openairdocs.org/model/commander-114-b) (OpenAirDocs) - Reported make and model: GULSTM 114B - Reported engine: LYC IO540T4B5 - Fatal injuries: 0 - Pilot flight hours: 2,110 total, 69 in this make and model, 57 in the last 90 days - NTSB investigation: [NTSB FTW01LA143](https://openairdocs.org/ntsb/FTW01LA143) (OpenAirDocs) - FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/) - Page: https://openairdocs.org/incident/20010614013599A ## Narrative As the FAA filed it, in capitals; the FAA replaces private details with ^PRIVACY DATA OMITTED^. (.19)ON JUNE 14, 2001, AT APPROXIMATELY 1255 CENTRAL STANDARD TIME, AN AEROCOMMANDER 114-B AIRPLANE, N114BW, WAS SUBSTANTIALLY DAMAGED DURING A FORCED LANDING FOLLOWING A LOSS OF ENGINE POWER NEAR OKMULGEE, OKLAHOMA. THE AIRPLANE WAS REGISTERED TO A PRIVATE INDIVIDUAL AND OPERATED BY THE PILOT. THE COMMERCIAL PILOT, SOLE OCCUPANT OF THE AIRPLANE, SUSTAINED MINOR INJURIES. VISUAL METEOROLOGICAL CONDITIONS PREVAILED AND AN IFR FLIGHT PLAN WAS FILED FOR THE 14 CODE OF FEDERAL REGULATIONS PART 91 PERSONAL FLIGHT. THE CROSS-COUNTRY FLIGHT ORIGINATED FROM THE KYLE-OAKLEY FIELD AIRPORT, MURRAY, KENTUCKY, AT APPROXIMATELY 0900, AND WAS DESTINED FOR THE WILEY POST AIRPORT, OKLAHOMA CITY, OKLAHOMA. THE OWNER, WHO SPOKE TO THE PILOT FOLLOWING THE ACCIDENT, REPORTED THAT AFTER 1.5 HOURS OF NORMAL FLIGHT, THE ENGINE STARTED TO RUN ROUGH. THE ROUGHNESS INTENSIFIED, THE OIL PRESSURE GAUGE DROPPED TO 0, AND THE ENGINE "CEASED." THE PILOT REPORTED THE LOSS OF OIL PRESSURE TO AIR TRAFFIC CONTROL AND REQUESTED VECTORS TO OKMULGEE, OKLAHOMA. HE THEN REPORTED THAT HE "LOST THE ENGINE," HAD THE OKMULGEE AIRPORT IN SIGHT, AND "THOUGHT HE COULD MAKE IT." SUBSEQUENTLY, THE AIRPLANE LANDED IN A FIELD LOCATED 2 1/2 MILES NORTHEAST OF THE OKMULGEE AIRPORT. THE FAA INSPECTOR, WHO EXAMINED THE AIRCRAFT AT THE ACCIDENT SITE, REPORTED THAT BOTH WINGS, THE ENGINE FIREWALL, AND THE LANDING GEAR WERE STRUCTURALLY DAMAGED. HE ADDED THAT HE REMOVED THE ENGINE OIL DIPSTICK, AND IT INDICATED 2 QUARTS. (-23) AIRCRAFT EXPERIENCED POWER LOSS IN CRUISE FLIGHT RESULTING IN A FORCED LANDING IN A FIELD 2 1/2 MILES NORTHEAST OF THE OKM AIRPORT. THE AIRCRAFT RECEIVED SUBSTANTIAL DAMAGE. PRELIMINARY EXAMINATION REVEALED A HOLE IN THE CRANKCASE NEAR THE #5 CYLINDER. WRECKAGE TRANSPORTED TO AIR SALVAGE OF DALLAS, TX. FOR FURTHER INVESTIGATION OF THE ENGINE. THIS REPORT TO BE AMENDED AFTER THE EXAMINATION. (.4) THE FLIGHT HAD BEEN AIRBORNE FOR THREE HOURS WHEN THE PILOT HEARD A "LOUD BANG" AND THE ENGINE LOST TOTAL POWER. HE EXECUTED A FORCED LANDING TO A FIELD, DURING WHICH THE AIRPLANE CONTACTED DIRT MOUNDS THAT WERE 4 FEET HIGH, BEFORE IT CAME TO A STOP UPRIGHT. POSTACCIDENT EXAMINATION OF THE AIRPLANE REVEALED THAT FRESH ENGINE OIL WAS ADHERING TO THE LEFT SIDE OF THE FUSELAGE FROM THE ENGINE COWLING EXTENDING BACK TO THE EMPENNAGE. THE OIL DIP STICK WAS REMOVED AND INDICATED ONLY 2 QUARTS (8 QUART CAPACITY). THE OIL WAS BLACK AND SMELLED AS THOUGH IT HAD BEEN EXPOSED TO HEAT. THE ENGINE CRANKCASE DISPLAYED A 2.5-INCH DIAMETER HOLE BETWEEN THE #5 AND #6 CYLINDERS. THE ENGINE WAS DISASSEMBLED AND IT WAS NOTED THAT THE CONNECTING ROD FOR THE #6 CYLINDER HAD SEPARATED FROM ITS PISTON AND THE CRANKSHAFT. THE #6 CONNECTING ROD JOURNAL DISPLAYED EVIDENCE OF THERMAL DAMAGE AND METAL TRANSFER. METALLURGICAL EXAMINATION OF THE #6 CONNECTING ROD END CAP AND BOLT REVEALED FRACTURES INDICATIVE OF OVERSTRESS AT EXTREME TEMPERATURES. ADDITIONALLY, THE ROD END CAP BEARING SURFACE DISPLAYED FRETTING AND METAL TRANSFER. NO OTHER ANOMALIES WITH THE ENGINE WERE NOTED. ## 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 FTW01LA143](https://openairdocs.org/ntsb/FTW01LA143), Jun 14, 2001: Commander 114-B (N114BW), Okmulgee, OK, substantial damage. Probable cause: the failure of the #6 cylinder's connecting rod, which resulted in a complete loss of engine power. A contributing factor to the accident was the lack of suitable terrain for the forced landing. 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.