INTERMOUNTAIN HELICOPTER INC

Part 135 operator · designator NTNA

Data confidence: Records are linked by certificate number, aircraft registration, or a name match that a reviewer has confirmed. Each record below shows how it was linked.

Also recorded as: INTERMOUNTAIN HELICOPTER INC, INTERMOUNTAIN HELICOPTERS, INC.

Accident & enforcement record

Events that happened, regardless of the operator's own reporting. Each links to its public source.

NTSB accidents & incidents

No NTSB accidents or incidents linked to this operator.

FAA enforcement actions

Civil penalty ordered · 2022-03-31 Name match — reviewer confirmed
Drug & alcohol testing programAir carrier / commercial operator

Sanction: $5,000 · case closed 2023-02-09

Source: FAA case 2022WP910020

Maintenance disclosure history

Service Difficulty Reports are self-reported maintenance findings. The NUMBER of reports is not a measure of reliability — diligent operators file more, not fewer. These are shown for transparency, not as a negative signal. To verify a report, search its control number at the FAA SDRS site.

Reports span 1998–1998. Most-reported systems: Main rotor drive (63) — 1. Most-common natures of condition, as filed: OTHER — 1.

1 report on file.

OTHER · 1998-07-23 Matched by certificate designator
N1107T · ATA 6320

Part: PUMP — FAILED (M/R TRANSMISSION)

PRE-FLIGHT INSP FND XMSN FLUID FULL. AFTER START AND SPOOL UP THRU 70 PERCENT NR, PILOT NOTICED XMSN CHIPS LIGHT. PILOT SHUT DOWN, FND FUZZ AND FERROUS FLAKES ON CHIP PLUGS. CLEANED AND RE-INSTALLED. UPON RE-START, XMSN CHIPS LIGHT. FLUID LEVEL FOUND AT ADD MARK. INVEST REVEALED M/R XMSN SCAVENGE PUMP P/N 269A5266E HAD DECOUPLED DUE TO PUMP INPUT SHAFT P/N 11176 AND DRIVE ADAPTER P/N 3690251215 STRIPPING. PUMP COVER RETAINER PIN P/N MS16555-601 WAS SHEARED AS WAS DRIVE KEY P/N MS20068-49. NO DEBRIS FND JAMMING PUMP ASSY. PRIOR TO INCIDENT, NO DEBRIS FND ON CHIP PLUGS OR XMSN OIL FILTER DURING MX. PUMP INPUT SHAFT AND/OR DRIVE PLUG ADAPTER POSSIBLY IMPROPER HEAT TREATMENT (HARDNESS). 945.4 HRS TO TBO.

Source: SDR 98ZZZX2778

Linked aircraft

N-numberMake / modelYearStatusLink basis
N9122ZBELL 2121975Valid RegistrationMatched by certificate designator

Aircraft with earlier records under this certificate

Maintenance and accident records on this page also cover aircraft that are not in this operator's current FAA fleet list. Charter and management fleets change — owners switch management companies, sell, or export aircraft. Where the registry shows what became of a tail, it is noted below.

  • N1107T (HUGHES HELICOPTERS INC HUGHES 369D) — records 1998 · registered to AVIATION ADVANTAGE INC (owner ≠ operator)