N639NA
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 |
| CHEVRON USA PRODUCTION COMPANY (AC2A) | Operator | on 2016-04-07 | Operator named in NTSB report |
Accident & incident history
Operated by CHEVRON USA INC (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, 2013-09-25 – 2021-10-28.
Part: COOLING FAN — INOPERATIVE · airframe 6,200 hrs · 10,639 cycles
RIGHT SIDE AVIONICS COOLING FAN DOES NOT COME ON WITH NO COCKPIT INDICATION OF FAN FAILURE. AS PER DESIGN, A DEDICATED CAS CAPTION NOSE FAN 1 OFF SHOULD HAVE BEEN DISPLAYED ON MFD.
Earlier reports · 2013–2020 · 14 reports
2020
Part: WASHER — CRACKED (M/R HEAD) · airframe 5,771 hrs · 10,038 cycles
MAIN ROTOR LAG DAMPER OUTBOARD SPECIAL WASHER P/N 3G6220A05052 WAS FOUND CRACKED DURING DAILY VISUAL INSPECTION.
2019
Part: SKIN — CORRODED (TAILBOOM) · airframe 4,933 hrs · 8,950 cycles
CORROSION FOUND BETWEEN PREVIOUS REPAIR AND SKIN ON LEFT AFT TAILCONE AREA
Part: FILTER — CRACKED (ZONE 200) · airframe 4,705 hrs
IBF MAINTENANCE AID FOUND TO BE CRACKED.
Part: FILTER — CRACKED (ZONE 200) · airframe 4,704 hrs
IBF MAINTENANCE AID FOUND TO BE CRACKED.
2018
Part: INDICATOR — CRACKED (ZONE 200) · airframe 4,107 hrs
IBF MAINTENANCE INDICATOR FOUND TO BE CRACKED.
Part: FILTER — CRACKED (ZONE 200) · airframe 4,107 hrs
IBF MAINTENANCE INDICATOR FOUND TO BE CRACKED.
Part: FITTING — CORRODED (FUSELAGE) · airframe 5,894 hrs · 11,404 cycles
CORROSION FORMING AT STA3300 RIGHT SIDE CABIN OVERHEAD AT BULKHEAD FITTING PENETRATION AREA. CORROSION WAS REMOVED AND FITTING REPLACED.
2017
Part: SEAL — LEAKING (TRANSMISSION) · airframe 3,286 hrs
SEAL LEAKED ON THE TRANSMISSION, WASHED GREASE OUT OF BEARING.
2016
Part: DAMPER — WEAK (MAIN ROTOR) · airframe 2,565 hrs
WEAK M/R DAMPER CAUSED ENGINE TORQUE MISCOMPARE. CAUSED BY VIBRATION.
Part: EROSION SHIELD — BROKEN (T/R BLADE) · airframe 2,498 hrs
TAIL ROTOR BLADE LIGHTNING BONDING STRIP BROKE IN FLIGHT AND CONTACTED MAIN ROTOR BLADE. REPLACED LIGHTNING BONDING STRIP, TAIL ROTOR BLADE AND MAIN ROTOR BLADE.
Part: SEAT — CORRODED (CABIN) · airframe 2,369 hrs
SEAT, PN: 3G2520V00131 HAS CORROSION WHERE SEAT BACK CUSHION, PN: 3G2520L00251 CONTACTS THE METAL WEBBING ATTACHED TO THE FRAME. AFTER FURTHER INVESTIGATION IT HAS BEEN FOUND THAT OTHER SEAT BACK CUSHIONS ARE MFG WITH A DIFFERENT MATERIAL THAT CONTACTS THE WEBBING HAS NOT HAD THIS ISSUE. 10 OF THE 12 SEAT FRAMES ARE CORRODED ON THE WEBBING.
Part: PLATE — CORRODED (ZONE 100) · airframe 2,369 hrs
LEFT SPONSON AFT PLATE CORRODED. WHEN THE CORROSION WAS REMOVED, THE DEPTH EXCEEDED THE ALLOWABLE LIMIT. THE CORROSION APPEARS TO HAVE STARTED FROM PREVIOUSLY DRILLED HOLES WHICH WERE UNTREATED WITH A CORROSION PREVENTATIVE COMPOUND. THIS SHOULD HAVE BEEN APPLIED DURING MFG.
2014
Part: BEARING — DISLODGED (SWASHPLATE) · airframe 626 hrs
ON DAILY POST FLIGHT INSPECTION, IT WAS DISCOVERED THAT ONE OF THE ROTATING SCISSORS WAS NOT CONNECTED TO THE SWASHPLATE. BEARING HAD COME OUT OF THE RACE.
2013
Part: GROMMET — FAILED (ZONE 400) · airframe 299 hrs
NEW STYLE EXHAUST SYS FAILURE AT ATTACHMENT POINTS WHERE RUBBER GROMMETS INSULATOR CONNECT TAIL PIPE. AFTER GROMMETS FAIL, THE MOVEMENT AND EXHAUST VIBRATION LEAD TO EXCESSIVE FIREWALL CRACKING.