N639MM
Registered owner: CHEVRON USA INC, MS (owner ≠ operator)
Operators of this aircraft
Who operated this tail, and how firmly we know it.
| Operator | Role | Period | Basis |
|---|---|---|---|
| CHEVRON USA PRODUCTION COMPANY (AC2A) | Certificate holder | — | Matched by certificate designator |
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.
16 reports on file, 2013-09-16 – 2023-06-18.
Part: ACTUATOR — UNSERVICEABLE (ROTOR BRAKE) · airframe 9,722 hrs · 17,682 cycles
ROTOR BRAKE FAIL CAS ILLUMINATED ON SHUT DOWN WITH CALIPER INDICATING DOWN POSITION. REPLACED ROTOR BRAKE ACTUATOR.
Earlier reports · 2013–2022 · 15 reports
2022
Part: TAIL BOOM — UNSERVICEABLE · airframe 9,442 hrs · 17,296 cycles
TAIL STRUCTURE HAS AREA OF DELAMINATION ON R/H SIDE.
Part: PLATE — CORRODED (ZONE 200) · airframe 9,107 hrs · 16,798 cycles
CORROSION DAMAGE CAUSING REPLACEMENT OF AFT RIGHT UPPER PLATE.
Part: BLEED VALVE — CRACKED · airframe 8,950 hrs · 16,600 cycles
DURING TROUBLESHOOTING OF LOW POWER ON #1 ENGINE, #2 ENGINE BLEED VALVE WAS REMOVED TO SWAP WITH #1 ENGINE BLEED VALVE AND FOUND #2 BLEED VALVE SEALING DISC WAS CRACKED. BLEED VALVE WAS REPLACED.
2021
Part: ACTUATOR — FAULTED (ROLL) · airframe 8,914 hrs · 16,542 cycles
1 R AP FAIL CAS LIGHT ILLUMINATED DURING CHECK. REPLACED NO 1 ROLL ACTUATOR AND PERFORMED FUNCTIONAL CHECK.
Part: CHIP DETECTOR — DAMAGED (MAIN G/B) · airframe 8,905 hrs · 16,530 cycles
MGB L/H SUMP CHIP DETECTOR RETAINING GROOVES WORN BEYOND ACCEPTABLE PUBLISHED MANUFACTURE LIMITS AS RECEIVED FROM OVERHAUL CONDITION.
2020
Part: CHIP DETECTOR — UNBONDED (IGB) · airframe 8,466 hrs · 15,969 cycles
THE INTERMEDIATE GEARBOX (IGB) CHIP DETECTOR HAS ROTATIONAL MOVEMENT AT THE PIN FOLLOWER RETAINING RING COLLAR.
Part: FILTER — CRACKED (ZONE 200) · airframe 8,466 hrs
IBF MAINTENANCE INDICATOR FOUND CRACKED. *SUPPLEMENTAL INFORMATION* PART NUMBER ENTERED ON ORIGINAL SDR IN SECTION 5 WAS IN ERROR. PART NUMBER WAS SUBMITTED AS 104440-201 AND SHOULD HAVE BEEN 104441-201. *SUPPLEMENTAL INFORMATION* THE UNIQUE CONTROL CODE WAS ALSO ENTERED IN ERROR. UNIQUE CONTROL CODE WAS SUBMITTED AS AC2A202050119 AND SHOULD HAVE READ AC2A2020050113919.
2018
Part: HANDLE — VIBRATION (COCKPIT DOOR) · airframe 7,588 hrs
COCKPIT DOOR OPENED IN FLIGHT. LANDED AT GC205 (NEAREST CHEVRON PLATFORM. AFTER LANDING, CREW INSPECTED AND SECURED DOOR. DETERMINED CAUSE OF DOOR OPENING WAS VIBRATION OF THE DOOR HANDLE.
Part: FILTER — CRACKED (ZONE 200) · airframe 7,570 hrs
IBF MAINTENANCE AID FOUND TO BE CRACKED.
Part: FILTER — CRACKED (ZONE 200) · airframe 7,570 hrs
IBF MAINTENANCE AID FOUND TO BE CRACKED.
Part: FAN — OVERHEATED (COCKPIT) · airframe 7,138 hrs
PRIOR TO CRUISE CLEARANCE, PILOTS NOTICED A STRONG ELECTRICAL OVERHEAT ODOR WITH A SIMULTANEOUS FWD FAN CAS MESSAGE. NO SMOKE OR FLAMES WERE NOTED. CREW COMPLIED WITH QRH. REPLACED THE PILOT'S COCKPIT FAN.
2017
Part: BLADE — CRACKED (TAIL ROTOR) · airframe 6,679 hrs
TAIL ROTOR BLADE CRACK AT INBOARD ROOT NEAR EROSION SHIELD.
Part: BLADE — CRACKED (TAIL ROTOR) · airframe 6,679 hrs
TAIL ROTOR BLADE CRACK AT INBOARD ROOT NEAR EROSION SHIELD.
2015
Part: OIL COOLER — VIBRATION · airframe 5,230 hrs
OIL COOLER FAN HIGH VIBRATION READINGS.
2013
Part: TORQUE SENSOR — DAMAGED (ENGINE) · airframe 3,467 hrs
ENGINE TORQUE MISCOMPARE CAS MESSAGE ILLUMINATED DURING GROUND RUN. FOUND TORQUE SENSORS DAMAGED FROM CONTACT WITH ROTATING COMPONENT.