N140SF
Registered owner: OSF AVIATION LLC, IL (owner ≠ operator)
Operators of this aircraft
Who operated this tail, and how firmly we know it.
| Operator | Role | Period | Basis |
|---|---|---|---|
| OSF AVIATION LLC (O84A) | Certificate holder | — | Matched by certificate designator |
| OSF AVIATION LLC (O84A) | Operator | on 2017-10-12 | Operator named in NTSB report |
| DONALD E. MCMURTRIE | Operator | on 1982-04-09 | Operator named in NTSB report |
Accident & incident history
Operated by OSF AVIATION LLC. (per NTSB report)
Operated by DONALD E. MCMURTRIE (per NTSB report)
Maintenance disclosures
Service Difficulty Reports filed with the FAA for this airframe. Filing is largely voluntary — the number of reports is not a measure of reliability. To verify a report, search its control number at the FAA SDRS site.
15 reports on file, 2014-09-22 – 2025-10-01.
Part: PROBE — FAULTY (ENG BAY) · airframe 9,044 hrs · 25,445 cycles
DURING START UP THE PILOT NOTED A HIGH RISE IN TEMP WHICH EXCEEDED ALLOWABLE TEMP FOR START. IMMEDIATELY SHUT THE ENGINE DOWN. CONTACTED MX. PER THE MX MANUAL NO TEMPS WERE EXCEEDED PER THE MX MANUAL ONLY THE "ALLOWABLE" LIMIT FOR PILOT START. FURTHER TROUBLESHOOTING FOUND A FAULTY TEMP PROBE WHICH WOULD HAVE CAUSED A HIGHER THAN NORMAL TEMP DURING THE START. CHANGED THE TEMP PROBE AND ENGINE STARTED NORMAL.
Part: ENGINE — FAULTED · airframe 8,764 hrs
ENGINE WOULD NOT START. THE ENGINE WAS FLOODED WITH FUEL
Part: TERMINAL BLOCK — FAILED (NR 2 ENGINE) · airframe 8,695 hrs · 24,572 cycles
PATIENT ONBOARD FOR DEPARTURE #2 ENGINE WOULD NOT START. FOUND A BAD TERMINAL BOARD AND BUS TIE RELAY.
Part: STATIC INVERTER — FAILED · airframe 8,414 hrs · 23,868 cycles
LOSS OF ALL MED CREW LIGHTING AND POWER RECEPTACLES
Part: WARNING MESSAGE — FALSE ACTIVATION · airframe 8,393 hrs · 23,810 cycles
ON APPROACH PILOT OBSERVED CAUTION ON THE CAD FOR AP1 ACTUATOR WITH A P ON THE PFD. THIS WAS DURING EXTREME COLD TEMPERATURES. COULD NOT DUPLICATE.
Part: COLL PITCH CNTR — ABNORMAL · airframe 8,350 hrs
COLLECTIVE FRICTION WAS TOO LIGHT ALLOWING COLLECTIVE TO FALL WHEN HANDS OFF CONTROLS. FOUND THE COLLECTIVE FRICTION KNOB FULLY LOOSENED AND NOT TIGHTENED TO INPUT COLLECTIVE FRICTION ON THE COLLECTIVE ALLOWING THE CONSTANT POWER TO BE MAINTAINED.
Earlier reports · 2014–2023 · 9 reports
2023
Part: PRESSURE SENSOR — ABNORMAL (#1 ENGINE) · airframe 6,702 hrs
FUEL PRESSURE SENSOR FAILED
Part: GAUGE — DEBONDED · airframe 6,640 hrs
FALSE MAST MOMENT INDICATION
2022
Part: TACHOMETER — FAILED · airframe 6,511 hrs
TRIPLE TACH WOULDN'T PASS SELF TEST ON START UP
Part: GEARBOX — MAKING METAL (TAIL ROTOR) · airframe 6,370 hrs
RECEIVE T\R CHIP WARNING. ON SHORT FINAL TO LANDING SO NO TIME TO BURN. FOUND A SMALL SLIVER ON THE 90 DEGREE G\B. FOLLOWED MANUFACTURES RECOMMENDED PROCEDURES. NO FURTHER ISSUES
Part: CONNECTOR — DIRTY (ENGINE) · airframe 6,315 hrs
FLIGHT # 03766 - RIGHT AFTER LIFT OFF FROM GBG BASE APRON, ANALOG TRIPLE TACH GAVE ERRATIC INDICATIONS SHOWING #1 NEEDLE DROPPING TO 80-83 RANGE AND BOUNCING BACK UP TO MATCH ROTOR AND NUMBER 2. SIMULTANEOUSLY, VARTOMS DROPPED TO MANUAL MODE AND NG1 SPLIT TO HIGH SIDE, GIVING APPEARANCE OF TRYING TO DRAG THE NG2 UP. TURNED THE AIRCRAFT BACK TO THE APRON AND LANDED PROMPTLY WITHOUT FURTHER INCIDENT.
2017
Part: SWITCH — STICKING (THROTTLE) · airframe 2,927 hrs · 8,823 cycles
DURING STARTUP, THE NR 1 ENGINE TWIST GRIP LIGHT REMAINED ILLUMINATED. THE AIRCRAFT WAS SHUTDOWN AND MAINTENANCE WAS NOTIFIED. FOUND THE SWITCH WAS STICKING AND OUT OF ADJUSTMENT. THE SWITCH WAS CLEANED AND ADJUSTED AND THE AIRCRAFT WAS RETURNED TO SERVICE.
2014
Part: ACTUATOR — FAULTY (TAIL BOOM) · airframe 1,483 hrs · 4,444 cycles
AS AIRCRAFT WAS PICKED UP INTO A HOVER CAD WARNING ACTUATOR APPEARED WITH THE ASSOCIATED Y ON THE PILOTS PRIMARY FLIGHT DISPLAY. AIRCRAFT WAS LANDED, SYSTEM WAS RESET AND PICKED UP INTO A HOVER WITH THE SAME RESULT. AIRCRAFT LANDED, FLIGHT DISCONTINUED AND MAINTENANCE WAS CALLED.
Part: UNKNOWN — ODOR (COCKPIT) · airframe 1,406 hrs · 4,164 cycles
ON LEVEL OFF AND INTO CRUISE FLIGHT, MED CREW DETECTED A STRONG FUEL ODOR IN CABIN. ODOR THEN SPREAD TO COCKPIT. FLIGHT ABORTED AND RETURNED TO PAD. ACFT INSPECTED FOR FUEL LEAKS NONE FOUND. TOOK TWO ATTEMPTS TO START NR 2 ENGINE AND ODOR IS BELIEVED TO BE EXCESS FUEL FROM THE ABORTED FIRST START.
Part: GEARBOX — MAKING METAL (TAIL ROTOR) · airframe 1,380 hrs · 4,083 cycles
DURING APPROACH, TAIL ROTOR CHIP LIGHT ILLUMINATED, ATTEMPT TO BURN THE CHIP WAS UNSUCCESSFUL AND A LANDING WAS MADE. DUE TO METAL IN THE TAIL ROTOR GEARBOX THE UNIT WAS REPLACED.