N502CH
Registered owner: VERTOL SYSTEMS CO INC, FL (owner ≠ operator)
Operators of this aircraft
Who operated this tail, and how firmly we know it.
No operator established for this aircraft.
Accident & incident history
No NTSB accidents or incidents on file for this aircraft.
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.
5 reports on file, 1996-09-04 – 2004-09-13.
Part: MAST — CORRODED (MAIN ROTOR)
DURING 100 HR INSPECTION, THE MAIN ROTOR DRIVESHAFT WAS REMOVED FOR INSPECTION. THE MECHANIC LOOKED DOWN THE MAST AND FOUND THE PAINT ON THE INSIDE DIAMETER WAS BLISTERED AND PEELING. THE MECHANIC ALSO NOTICED PAINT ON THE TOP OF THE MAIN TRANSMISSION SPLINES. THE MAIN ROTOR MAST WAS REMOVED AND IT WAS NOTICED THAT THE PAINT ON THE BOTTOM FLANGE WAS ALSO PEELING AND THE INSIDE WAS CORRODING. THE MAIN TRANSMISSION WAS REMOVED FOR CONTAMINATION AND INSPECTED. THE MAIN ROTOR MAST WAS REPLACED. THE MANUFACTURE WAS NOTIFIED. THE MAST WAS INSTALLED 11-13-2000.
Part: BRACKET — CRACKED (TAIL ROTOR)
LT TORQUE PEDAL BRACKET FAILED PRIOR TO ENG START ON GROUND. FAILED BRKT ASSY WAS SENT TO LOCAL LAB FOR FRACTOGRAPHIC EXAMINATION. -7 (RT) BRACKET FROM SAME HELICOPTER AND BOTH -8 AND -7 BRACKETS FROM SECOND HELICOPTER WERE REMOVED FOR VISUAL AND NDT INSP. EVIDENCE OF FATIGUE CRACK IN A RADIUS AT UPR LT (PILOTS LT SIDE) MTG FLANGE. FATIGUE CRACKS INCREASE TO A LENGTH OF APPROX. .1250 TO .1875 INCH PRIOR TO FINAL OVERLOAD, SUGGEST A HIGH CYCLIC STRESS MAGNITUDE AND A LOW NUMBER OF STRESS CYCLES TO FAILURE. 3 OF THE 4 MTG FLANGES HAD BROKEN OFF. CRACK THROUGH UPPER LT MTG FLANGE EXHIBITED. FRACTURE OCCURED AT AN INSIDE CORNER. THE TOTAL TIME OF THE SECOND HELI WAS 13,854.
Part: PIN — BROKEN (MAIN ROTOR HUB) · airframe 13,674 hrs
VISUAL INSPECTION REVEALED BROKEN PIN. (X)
Part: SENDER — FAILED (OIL TEMP)
AFTER 14.2 HOURS, THE OIL TEMPERATURE STARTED READING HIGH. AFTER TROUBLESHOOTING, THE SENDER WAS CHANGED AND THE PROBLEM WAS CORRECTED.
Part: BLADE PIN — FAILED (M/R BLADE)
DURING THE 100-HOUR INSPECTION WHILE BLADES WERE BEING REMOVED FOR INSPECTION, THE MAIN ROTOR BLADE PIN S/N 09884-6097 FELL APART. THE BLADE PIN SHANK BROKE AT THE POINT WHERE THE THREADS START. PART TT: 4667.2. PART HAS A LIFE LIMIT OF 7600 HRS. (X)