N139SC Aircraft Overview
Performance Profile
The King Air C90 delivers 226-knot performance across 1,260 NM. N139SC is powered by 2x Pratt & Whitney Canada PT6A-21 at 550 SHP each. An operating ceiling of 30,000 feet keeps the aircraft above most weather while maintaining fuel efficiency.
Mission Profile
For regional missions with moderate passenger loads, the King Air C90 provides the best economics. N139SC seats 7 in a 12.4 ft cabin that handles the distances and airports that define turboprop operations.
Charter Authorization
This King Air C90 is authorized for charter under N139SC's Part 135 certificate. Turboprops deliver the private aviation experience at the lowest hourly cost. Contact us for a quote.
Insider Note
Turboprops like the King Air C90 access airstrips that no jet can reach. N139SC can operate from runways under 2,500 feet, paved or unpaved, opening up thousands of airports across rural and mountainous regions.
Charter & Acquisition Briefing
Registration N139SC is a 1979 helicopter held by NEW ULM C90 LLC. This briefing covers the charter economics and operational context for this rotorcraft.
Fleet Position
Over 10,000 helicopters are on active U.S. registrations. FAA data shows N139SC based in MARSHALL, MN. The U.S. helicopter fleet serves EMS, offshore oil and gas, law enforcement, utility, VIP transport, and flight training. Maintenance infrastructure is extensive, with turbine helicopter service available at most major airports.
Charter Availability
N139SC is Part 135 charter authorized. Helicopter charter rates range from $1,500 to $8,000 per flight hour depending on type and configuration. VIP helicopter charter serves urban transfers (Manhattan to JFK in 8 minutes), resort access, and event transportation where ground travel times exceed 2 hours.
Market Position
As a 1979 airframe, N139SC is a classic helicopter. Pre-owned values sit at $200K to $1.5M. Classic helicopters remain operationally viable when properly maintained. Turbine engine overhaul programs provide continued support, and the large installed base ensures parts availability.
Pre-buy focus: turbine engine condition (overhaul costs range from $150,000 to $400,000 depending on engine type), transmission and gearbox status, dynamic component times, and corrosion inspection results.
Mission Profile
Core strength: access. Helicopters land where fixed-wing aircraft cannot: hospital rooftops, offshore platforms, mountain ridges, yacht decks, and city helipads. The value is not in speed over distance; it is in the elimination of the first-mile and last-mile problem that every other form of transportation faces.
When to Choose Something Else
Do not charter a helicopter for large groups. Most helicopters seat 4 to 7 passengers. For groups of 8+, a fixed-wing aircraft provides more capacity at lower per-seat costs.
Ownership & Operations
Part 91 operations cover owner-flown and company-flown aircraft under general operating rules. Part 135 governs on-demand air charter, requiring higher crew qualifications, maintenance standards, and operational oversight. An aircraft can operate under both parts: Part 91 for owner use and Part 135 when offered for charter revenue. Dual-use arrangements offset ownership costs by generating charter income during idle periods.
Pre-Purchase Considerations
Pre-purchase inspections are non-negotiable in aircraft acquisitions. A qualified maintenance facility conducts a detailed review of airframe, engines, avionics, and records. Inspection costs range from $15,000 to $75,000 depending on aircraft size and complexity. Findings from the pre-buy determine final pricing, identify upcoming maintenance events, and reveal any damage history that affects value.
Charter Market Context
Charter demand for business jets follows seasonal and economic patterns. Q4 (October through December) sees peak demand driven by year-end business travel, holiday flights, and tax planning (asset purchases before December 31). Q1 starts strong with CES, Davos, and Super Bowl driving specific route demand. Summer leisure travel to resort destinations creates predictable seasonal corridors.
N139SC Aircraft Intelligence
Cross-referenced from FAA Registry, Part 135 operator database, and live ADS-B telemetry.
Inquire About N139SC
This aircraft operates under an active FAA Part 135 certificate with MIDWEST AVIATION DIV OF SOUTHWEST AVIATION, INC, making it legally authorized for on-demand charter. Contact us to check current availability and book your flight.
Contact UsDetailed Specifications
Aircraft Identity
| Registration | N139SC |
|---|---|
| Manufacturer | BEECH |
| FAA Model | C90 |
| Serial Number | LJ-868 |
| Year | 1979 |
| Aircraft Type | Fixed wing multi engine |
| Category | Turboprop |
| Part 135 Operator | MIDWEST AVIATION DIV OF SOUTHWEST AVIATION, INC |
| Owner (FAA) | NEW ULM C90 LLC |
| Location | MARSHALL, MN |
Performance & Capabilities
| Engines | 2× Turbine |
|---|---|
| Cruise Speed | ~160 knots (~184 mph) |
| Approximate Range | ~800 nautical miles |
| Passengers | Up to 4 |
| Registration Status | Valid (FAA) |
| Charter Status | Part 135 Authorized |
| D085 Listing | Active |
Frequently Asked Questions About N139SC
16 questions answered about this aircraft and the BEECH C90
N139SC is a 1979 BEECH C90 registered in the United States. It carries serial number LJ-868 and is classified as a turboprop in the private aviation market. The aircraft has maintained continuous airworthiness for 29 years.
N139SC is a BEECH C90. This model serves the turboprop segment of the business aviation market. BEECH has a well-established support network for this airframe.
N139SC is registered to NEW ULM C90 LLC according to FAA records. The registrant is based in Marshall, MN. Registration data is sourced from the FAA Aircraft Registry and may not reflect recent ownership transfers.
The King Air C90 was produced from 1971-present. The type was succeeded by the King Air C90GTx. This specific aircraft (N139SC) was manufactured in 1979.
The manufacturer serial number is LJ-868.
N139SC is registered in MARSHALL, MN.
Yes. N139SC holds an active Part 135 certificate under MIDWEST AVIATION DIV OF SOUTHWEST AVIATION, INC, meaning it is legally authorized for on-demand charter operations. Contact The Jet Finder to check current availability.
N139SC is operated under the Part 135 certificate held by MIDWEST AVIATION DIV OF SOUTHWEST AVIATION, INC.
N139SC is a fixed wing multi engine classified as a Turboprop.
The King Air C90 has a maximum cruise speed of 226 knots. Long-range cruise is 195 kts. At these speeds, a three-hour flight covers approximately 678 nautical miles, connecting most major city pairs within its range envelope.
The BEECH C90 has an approximate range of 800 nautical miles. This translates to nonstop coverage of routes like New York to Miami, Dallas to Denver, or Chicago to Atlanta. At a cruise speed of approximately 160 knots, total block times remain competitive for the category.
The King Air C90 seats up to 7 passengers in a typical charter configuration. The cabin measures 12.4 ft long, 4.5 ft wide, and 4.8 ft tall. The cabin accommodates productive work or rest on flights of typical duration.
N139SC maintains a valid registration status with the FAA and is listed on the D085 Part 135 Aircraft Listing.
N139SC is listed on the FAA D085 Part 135 database under MIDWEST AVIATION DIV OF SOUTHWEST AVIATION, INC. This confirms the aircraft is authorized for on-demand charter. Availability depends on the operator's schedule and positioning. Contact The Jet Finder to check current availability for this specific aircraft or similar models.
Contact The Jet Finder for acquisition inquiries regarding N139SC. Our advisory team handles both on-market and off-market transactions.
You can verify N139SC directly on the FAA Aircraft Registry.
From Your First Mission to Your Final Acquisition
Contact us about charter availability or acquisition. If this aircraft does not suit your needs, we have access to more than 15,000 private aircraft worldwide.