N291HC
Registered owner: INTERMOUNTAIN MEDICAL TRANSPORT LLC, UT (owner ≠ operator)
Operators of this aircraft
Who operated this tail, and how firmly we know it.
| Operator | Role | Period | Basis |
|---|---|---|---|
| IHC Health Services, Inc. (I7LA) | 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.
3 reports on file, 2017-05-04 – 2019-11-20.
Part: TRUNNION — SCORED (TAIL ROTOR HUB) · airframe 2,634 hrs · 9,099 cycles
PILOT REPORTED A MAIN ROTOR VIBRATION. UPON TRACK AND BALANCE OF THE MAIN ROTOR IT WAS DISCOVERED THAT THE VIBRATION WAS FROM THE TAIL ROTOR. THIS WAS NOT A COMMON OCCURRENCE AS THE TAIL ROTOR UNDERGOES A DETAILED INSPECTION EVERY 200-HOURS. IT IS VERY UNCOMMON TO EXPERIENCE A MAINTENANCE ISSUE BETWEEN INSPECTIONS. FOR THAT REASON,THE TAIL ROTOR WAS DISASSEMBLED FOR INSPECTION. UPON INSPECTION, THE TRUNNION WAS FOUND TO HAVE ABNORMAL WEAR ON THE BUSHING CONTACT SURFACE. THE ABNORMAL WEAR WAS LIMITED TO 50% OF THE CIRCUMFERENCE ON ONE END OF THE TRUNION. TRUNION PART NUMBER 109-8131-35-101 SERIAL NUMBER 515
Part: OIL COOLER — WORN (NR 1 ENGINE) · airframe 1,834 hrs
PILOT NOTED A SLIGHT INCREASE, WITHING LIMITS IN THE NR 1 ENGINE OIL TEMP DURING FLIGHT. DURING FINAL APPROACH, THE OIL TEMP STARTING INCREASING, THE PILOT ABORTED THE APPROACH, SECURED THE NR 1 ENGINE IAW THE RFM AND SUCCESSFULLY COMPLETED A RUN ON LANDING. DURING INSPECTION OF THE OIL COOLER DRIVE SPLINES, THERE WAS EXCESSIVE WEAR ALLOWING THE SPLINES TO SLIP. THE BEARING THAT SUPPORTS THE SHAFT WAS CORRODED AND WORN. THIS IS THE NEW STYLE OIL COOLER THAT DOES NOT REQUIRE A PERIODIC SPLINE INSPECTION.
Part: ATTACH FITTING — CRACKED (TAIL BOOM) · airframe 1,199 hrs
DURING A 1200 HOUR INSPECTION, A CRACK WAS FOUND IN THE LOWER LT TAIL BOOM ATTACH FITTING. AFTER REMOVING THE TAIL BOOM, FOUND A CRACK IN THE BULKHEAD & FRAME ASSEMBLY.