N135DU
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.
7 reports on file, 2010-09-03 – 2014-08-25.
Part: GEARBOX — FAILED (TAIL ROTOR) · airframe 2,624 hrs · 7,410 cycles
PILOT REPORTED HEARING GRINDING NOISE COMING FROM FENESTRON AREA AT GND IDLE WHILE HOT FUELING THE ACFT. DETERMINED TAIL ROTOR GEARBOX INPUT PINION WAS CAUSE OF NOISE. LARGE AMOUNT OF PLAY & HEAT AT INPUT SHAFT AREA OF GEARBOX.
Part: ROTOR SHAFT — FAULTY (MAIN ROTOR) · airframe 1,551 hrs · 4,340 cycles
WHILE TRYING TO ISOLATE A MALFUNCTION WITH THE MAST MOMENT INDICATION SYSTEM THE STRAIN GAGE WAS FOUND TO HAVE ERRATIC READINGS.
Part: SEAL — LEAKING (T/R GEARBOX) · airframe 1,550 hrs
AFTER A MX FLIGHT, FOUND THE TAIL ROTOR GEARBOX LEAKING OIL. AFTER FURTHER INVESTIGATION FOUND THE GEAR BOX OUTPUT SEAL INNER SPRING BROKEN AND PIECES OF THE SEAL MISSING. REPLACING THE TAIL ROTOR GEAR BOX.
Part: WEB — SEPARATED (CABIN FLOOR) · airframe 1,550 hrs · 4,320 cycles
THE COVER SHEET LH ASSEMBLY WAS FOUND MECHANICALLY SEVERED IN THE CENTER SECTION APPARENTLY FOR THE PURPOSE OF EASE OF REMOVAL AND REINSTALLATION IN THE COURSE OF MAINTENANCE.
Part: COVER PLATE — SEPARATED (FLOOR BOARD) · airframe 1,550 hrs · 4,320 cycles
THE COVER PLATE FWD RT ASSY WAS FOUND MECHANICALLY SEVERED IN THE CENTER SECTION, APPARENTLY FOR THE PURPOSE OF EASE OF REMOVAL AND REINSTALLATION IN THE COURSE OF MX.
Part: DIFFUSER — CRACKED · airframe 1,550 hrs · 4,320 cycles
WHILE PERFORMING SB SB319722830, VER B CENTRIFUGUAL DIFFUSER VANE BORESCOPE, FOUND A PIECE OF THE DIFFUSER VANE MISSING AND CRACKED. AWAITING MFG TEC TO COME REPLACE THE DIFFUSER.
Part: CONNECTOR — BURNED (EVAPORATOR) · airframe 1,331 hrs
ON A FINAL APPROACH, THE PILOT REPORTED SMELLING AN ELECTRICAL TYPE SMELL IN THE COCKPIT. HE SHUT OFF THE AIR CONDITIONING AND THE SMELL WENT AWAY. UPON LANDING, THE MX INSPECTED THE ACFT AND FOUND THAT A CONNECTOR FOR THE AFT EVAPORATOR ASSY HAD BURNED. THE MX R & R THE CONNECTOR IAW AN SB EC135-8010 THAT HAD BEEN PREVIOUSLY COMPLIED WITH. THE ACFT WAS RETURNED TO SERVICE.