Article At A Glance: Light Jets vs Turboprops on Short Runways
- Turboprops access runways as short as 2,500 feet — opening up thousands of airports that light jets physically cannot reach.
- Short runway performance is measured by TODR and LDR, both of which are heavily influenced by weight, temperature, and field elevation.
- The Pilatus PC-12 needs just 2,650 feet at maximum takeoff weight, making it one of the most capable short-field aircraft in its class.
- Light jets typically require 3,500 to 4,500 feet of runway — a threshold that eliminates hundreds of regional and private airstrips from consideration.
- On trips under 500nm, turboprops often match or beat light jets on total door-to-door trip time — keep reading to find out exactly when that trade-off tips the other way.
Choosing between a light jet and a turboprop often comes down to one question: where do you need to land?
Speed and cabin comfort get most of the attention in aircraft comparisons, but runway length quietly controls the entire conversation. A jet that cruises at 450 knots means nothing if the strip at your destination tops out at 3,000 feet. For pilots and operators flying into smaller regional airports, private estates, mountain strips, or island runways, short-field performance isn’t a secondary consideration — it’s the primary one. Understanding these trade-offs is exactly what separates smart mission planning from expensive compromises.
This comparison cuts through the marketing specs and gets into the real-world numbers — takeoff distances, landing roll, density altitude penalties, and which aircraft types can actually operate where you need them to go.
Turboprops Win on Short Runways — Here’s Why That Matters
The gap between turboprop and light jet short-field performance isn’t marginal — it’s operational. Turboprops routinely operate from strips where light jets won’t even attempt an approach. That difference translates directly into destination flexibility, and for many operators, that flexibility is worth more than 100 knots of cruise speed.
Turboprop engines produce high torque at low airspeeds, which means more thrust is available earlier in the takeoff roll. Combined with lower approach speeds and shorter stopping distances, turboprops simply behave better at the slow end of the performance envelope. This isn’t a minor advantage — it’s a fundamental characteristic of how the propulsion system works.
For context, the Pilatus PC-12 accesses over 20,000 airports worldwide. A comparable light jet is limited to roughly 7,000. That’s not a rounding difference. That’s a completely different network of destinations.
How Short Runway Performance Is Measured
Before comparing specific aircraft, it helps to understand what the numbers actually mean. Manufacturers publish performance figures in their Airplane Flight Manuals (AFM), but those figures come with specific conditions attached — conditions that rarely match real-world operations exactly.
Takeoff Distance Required (TODR) Explained
TODR is the total distance an aircraft needs to accelerate from a standing start to a point 50 feet above the runway surface. It includes both the ground roll and the initial climb phase. This is the number pilots use when calculating whether a departure is legal and safe from a given strip. Manufacturers calculate it under ISA (International Standard Atmosphere) conditions at sea level, which means real-world figures are almost always longer.
Landing Distance Required (LDR) and Why It Differs From TODR
LDR measures the distance from 50 feet above the threshold to full stop. It’s almost always shorter than TODR for the same aircraft, which is why some strips that seem marginal for takeoff are perfectly comfortable for landing. Regulatory requirements also apply a 1.67 safety factor to LDR for Part 135 operations, meaning the actual usable runway must be significantly longer than the published number.
How Weight, Altitude, and Temperature Affect Short Runway Performance
This is where published specs diverge from reality fast. Every 1,000 feet of density altitude adds roughly 3–5% to your takeoff distance. A full passenger load and fuel combined with a hot day at a mountain airport can stretch your TODR by 30–40% over the sea-level ISA figure. Light jets feel this penalty more severely than turboprops because they rely on jet thrust, which degrades with air density far more aggressively than turboprop torque output does.
Density Altitude Rule of Thumb: For every 1,000 ft of density altitude above sea level, expect takeoff distance to increase by approximately 3–5% for turboprops and up to 6–8% for light jets. A light jet departing from a 5,000 ft elevation airport on a 30°C day may require 40% more runway than its sea-level spec suggests.
Wind also plays a significant role. A direct 10-knot headwind can reduce required takeoff distance by 10–15% for most aircraft. Conversely, even a modest tailwind component dramatically increases the numbers — which is why short-field operations require precise wind assessment, not approximations.
Turboprop Short Runway Performance
Turboprops have dominated short-field operations for decades, and the performance data backs up that reputation. The combination of high torque, lower approach speeds, and robust low-speed handling gives them a structural advantage at constrained airfields that no light jet currently matches. For those interested in more detailed comparisons, you might explore how different aircraft types stack up in various operational scenarios.
The Pilatus PC-12 Needs Just 2,650 Feet at Maximum Weight
| Aircraft | TODR (Sea Level, ISA) | LDR (Sea Level, ISA) | Max Payload | Cruise Speed |
|---|---|---|---|---|
| Pilatus PC-12 NGX | 2,650 ft | 1,970 ft | 2,400 lb | 290 KTAS |
| Beechcraft King Air 350 | 3,300 ft | 2,700 ft | 3,653 lb | 312 KTAS |
| Beechcraft King Air C90GTx | 2,050 ft | 1,890 ft | 2,345 lb | 248 KTAS |
| Daher TBM 960 | 2,740 ft | 2,460 ft | 1,543 lb | 330 KTAS |
The Pilatus PC-12 NGX is the benchmark for single-engine turboprop short-field performance. Its 2,650-foot TODR at maximum takeoff weight of 10,450 lb gives it access to strips that most multi-engine aircraft — turboprop or jet — cannot legally or safely use. The PC-12’s large cargo door and flat cabin floor also make it viable for medevac, cargo, and utility operations from those same constrained strips.
What makes the PC-12’s numbers especially impressive is that they hold up reasonably well in real-world conditions. The PT6A-67P engine, flat-rated at 1,845 shp, retains meaningful power reserve at higher density altitudes — a quality that matters enormously when you’re departing a 3,000-foot grass strip at 4,500 feet elevation in summer heat.
King Air 350 vs King Air C90: Short Field Performance Compared
- The King Air C90GTx requires just 2,050 feet for takeoff at sea level — the shortest of any King Air variant currently in production.
- The King Air 350 needs 3,300 feet, reflecting its larger airframe and higher max takeoff weight of 15,000 lb.
- The C90 series operates comfortably from strips that the 350 approaches with caution, making aircraft selection within the same family a meaningful short-field decision.
- Both models benefit from Pratt & Whitney Canada PT6 engines, which deliver reliable torque response critical for rejected takeoff scenarios on short strips.
- King Air 350 landing distance of 2,700 feet is competitive, but the regulatory 1.67x safety factor pushes the required runway length closer to 4,500 feet under Part 135 rules.
The King Air family demonstrates an important principle: within the same aircraft platform, airframe size and weight drive short-field performance more than engine type. Operators who need both King Air cabin space and short-field access often find the 350ER a reasonable compromise, though it doesn’t fully close the gap with the C90 at constrained strips.
Which Turboprop Airports Are Accessible That Jets Simply Cannot Reach
The practical impact of turboprop short-field performance shows up most clearly in specific geographic contexts. Island hopping in the Bahamas, operating into Scottish Highland airstrips like Tiree or Barra, accessing remote Alaskan bush strips, or flying into Himalayan high-altitude airports — these are operational realities for turboprop operators that light jet pilots simply don’t plan for, because the aircraft won’t support it.
Light Jet Short Runway Performance
Light jets occupy an interesting middle ground in the short-field conversation. They’re faster than turboprops and more capable than mid-size jets at constrained airports, but they still carry a fundamental runway requirement that limits where they can realistically operate. The best short-field light jets push that threshold down significantly — but never quite to turboprop territory.
Citation Mustang: The Most Short-Field Capable Light Jet
The Cessna Citation Mustang holds the short-field crown among certified light jets. With a published takeoff distance of 3,110 feet at sea level ISA conditions and a maximum takeoff weight of 8,645 lb, it edges out most competitors in its category by a meaningful margin. Its landing distance of 2,540 feet is equally competitive, making it a genuine option for smaller executive strips that would turn away a Phenom 300 or HondaJet Elite II without hesitation. The Mustang’s relatively low wing loading — a direct consequence of its smaller airframe — is what drives that short-field advantage within the light jet segment.
Phenom 100 and HondaJet Runway Requirements Compared
The Embraer Phenom 100EV and HondaJet Elite II represent the two most popular alternatives to the Mustang in the entry-level jet segment, and their short-field numbers tell slightly different stories. The Phenom 100EV requires approximately 3,349 feet for takeoff at sea level, while the HondaJet Elite II needs around 3,120 feet — placing it much closer to Mustang territory than most pilots expect. Both aircraft benefit from over-wing engine mounting designs that reduce ground-level noise and keep the fuselage aerodynamically clean, but neither configuration dramatically changes the fundamental runway equation compared to conventional engine placement.
- HondaJet Elite II TODR: ~3,120 ft at sea level ISA, maximum takeoff weight 10,600 lb
- Embraer Phenom 100EV TODR: ~3,349 ft at sea level ISA, maximum takeoff weight 10,582 lb
- Cessna Citation Mustang TODR: ~3,110 ft at sea level ISA, maximum takeoff weight 8,645 lb
- Cirrus Vision Jet SF50 TODR: ~2,500 ft at sea level — the shortest in the VLJ category, though with significant payload and range limitations
- All figures assume dry, paved, level runway — real-world conditions will increase these numbers
The Cirrus Vision Jet SF50 deserves a specific callout here. As a Very Light Jet, it pushes the category boundary with a 2,500-foot TODR — closer to turboprop performance than anything else with a jet engine. However, its single-engine configuration, 1,200 lb useful load, and 1,275 nm range cap mean it’s solving a different mission profile than a Phenom 100 or Mustang. It’s a short-field capable jet, but not a direct substitute for the utility those aircraft deliver.
On landing, both the Phenom 100EV and HondaJet Elite II perform respectably, requiring approximately 2,800 and 2,750 feet respectively. But under Part 135 operations with the mandatory 1.67x safety factor applied, those numbers translate to required runway lengths of 4,676 and 4,593 feet — a sobering reminder that published specs and operational minimums are two very different figures.
For private pilots operating under Part 91, the flexibility is greater, but the physics don’t change. A Phenom 100EV landing on a 3,500-foot strip on a hot afternoon with a slight tailwind is operating at the very edge of its performance envelope — a margin most experienced pilots and operators will deliberately avoid.
Where Light Jets Draw the Line: Minimum Runway Thresholds
As a practical rule, light jets need a minimum of 3,000 to 3,500 feet of paved, dry runway to operate safely with a realistic payload. That threshold climbs quickly with altitude, temperature, or any contamination on the surface. Anything under 3,000 feet is VLJ territory at best — and even then, the mission payload drops to levels that make the trip marginal. Operators pushing light jets below 3,500 feet are carrying risk that the performance charts will confirm, even if the numbers technically allow it.
Head-to-Head: Runway Length Requirements by Aircraft Type
Putting the numbers side by side makes the performance gap between turboprops and light jets immediately clear. The following comparison uses sea-level ISA takeoff distance figures across commonly operated aircraft in each category, representing typical operational configurations rather than absolute maximum performance numbers. For a broader comparison, check out our detailed analysis of Gulfstream vs Bombardier business jets for cost and performance.
| Aircraft | Category | TODR (Sea Level ISA) | LDR (Sea Level ISA) | Cruise Speed | Typical Range |
|---|---|---|---|---|---|
| King Air C90GTx | Turboprop | 2,050 ft | 1,890 ft | 248 KTAS | 1,000 nm |
| Pilatus PC-12 NGX | Turboprop | 2,650 ft | 1,970 ft | 290 KTAS | 1,803 nm |
| Daher TBM 960 | Turboprop | 2,740 ft | 2,460 ft | 330 KTAS | 1,730 nm |
| King Air 350 | Turboprop | 3,300 ft | 2,700 ft | 312 KTAS | 1,806 nm |
| Cirrus Vision Jet SF50 | VLJ | 2,500 ft | 2,200 ft | 311 KTAS | 1,275 nm |
| Citation Mustang | Light Jet | 3,110 ft | 2,540 ft | 340 KTAS | 1,150 nm |
| HondaJet Elite II | Light Jet | 3,120 ft | 2,750 ft | 422 KTAS | 1,437 nm |
| Phenom 100EV | Light Jet | 3,349 ft | 2,800 ft | 380 KTAS | 1,178 nm |
| Phenom 300E | Light Jet | 3,638 ft | 2,362 ft | 453 KTAS | 2,010 nm |
The pattern is unmistakable. Every turboprop in the table clears the runway hurdle that stops multiple light jets cold. The Phenom 300E — arguably the most capable light jet currently in production — needs 3,638 feet just to get airborne under ideal conditions. The King Air C90GTx needs less than 2,100 feet to do the same job.
What the table doesn’t show is the compounding effect of density altitude. At a high-elevation airport like Telluride Regional (9,070 ft MSL) or Lukla Airport in Nepal (9,334 ft MSL), the sea-level TODR figures become almost irrelevant. Turboprops retain meaningful performance at those elevations. For most light jets, the mission simply doesn’t exist.
Speed vs Access: When the Trade-Off Tips Each Way
Speed is the light jet’s most compelling argument, and it’s a legitimate one — but only when the destination airport cooperates. The real question isn’t which aircraft is faster in cruise; it’s which aircraft gets you to your specific destination faster when you account for every minute of the trip, not just the time at altitude.
Flights Under 500nm: Why Turboprops Often Win on Total Trip Time
Example Mission: Executive Strip to City Business Airport, 350nm
Turboprop (PC-12 NGX): Departs from 2,800 ft private strip. Climbs to FL250. Total block time approx. 1 hr 35 min. Direct routing available.
Light Jet (Phenom 300E): Cannot use 2,800 ft strip. Diverts to nearest qualifying airport — adds 45 minutes ground transport each end. Total door-to-door time: 2 hrs 40 min despite faster cruise speed.
Net result: The turboprop delivers the passenger 65 minutes earlier — from a strip the jet never could have used.
This scenario plays out constantly in real-world operations. The Phenom 300E cruises at 453 KTAS versus the PC-12’s 290 KTAS — a 163-knot speed advantage that sounds decisive. But when the light jet’s minimum runway requirement forces a diversion to a qualifying airport, the ground transportation time at both ends obliterates the speed advantage entirely. Below 400–500nm, door-to-door time often favours the turboprop specifically because of short-field access.
Climb performance compounds the effect on short routes. Light jets spend a proportionally larger share of a 300nm flight climbing to their efficient cruise altitude. A Phenom 300E climbs to FL410 optimally — a profile that makes excellent sense on a 900nm trip but adds minimal value on a 250nm hop where the aircraft barely reaches cruise before beginning descent.
There’s also the fuel stop factor. On routes where a light jet operates near its range limit, a fuel stop adds 30–45 minutes to block time. Turboprops with comparable range — the PC-12 carries a 1,803nm range — often eliminate that stop entirely, particularly on transatlantic island-hop routes or long domestic legs where fuel availability at remote strips is uncertain.
When Light Jet Speed Offsets the Runway Disadvantage
Beyond 600nm, with qualifying airports at both ends, the light jet’s cruise speed advantage becomes real and significant. A 900nm mission in a Phenom 300E at 453 KTAS takes roughly 2 hours. The same trip in a PC-12 at 290 KTAS runs closer to 3 hours and 6 minutes — a 66-minute difference that compounds across multi-leg days. For operators who primarily fly between well-served airports with 4,000-foot-plus runways, the light jet wins on productivity without conceding anything on access.
Weather, Obstacles, and Density Altitude Complications
Performance charts give you the baseline, but real-world short-field operations are defined by conditions that charts only partially account for. Density altitude, surface contamination, obstacle clearance requirements, and crosswind components all stack against the published numbers — and they stack harder against light jets than turboprops.
Obstacle clearance is a particular concern at short strips. Many private and rural airstrips have trees, terrain, or structures in the departure path that require specific climb gradients to clear legally and safely. The FAA requires a minimum climb gradient of 200 ft/nm after takeoff, but many short-strip departures demand significantly more. Turboprops, with their higher power-to-weight ratios at low speeds, handle steep initial climb requirements more comfortably than light jets operating near their performance limits.
How Hot and High Airports Push Jets to Their Limits
High-elevation airports expose the light jet’s most significant performance vulnerability. Jet engines are air-breathing machines — as air density drops with altitude, thrust output falls in direct proportion. At Telluride Regional Airport (KTEX), sitting at 9,070 feet MSL, a light jet that needs 3,500 feet at sea level may require 5,500 feet or more under summer afternoon conditions. That’s before factoring in a full passenger load or any tailwind component. Many light jets simply cannot legally depart Telluride at maximum weight during summer months — a hard operational ceiling that turboprop operators rarely encounter.
The density altitude problem compounds quickly. Combine a field elevation of 7,000 feet with an ambient temperature of 35°C and you’re looking at a density altitude above 10,000 feet. At that point, a light jet’s thrust deficit is severe enough that some manufacturers’ AFM data doesn’t even publish figures — the operation is outside the certified envelope entirely. Turboprops using flat-rated PT6 engines maintain power output to higher density altitudes before the rating cuts in, giving them a meaningful buffer that jet thrust simply cannot replicate in the same airframe weight class.
Turboprop Torque Advantage in Crosswind and Soft-Field Conditions
Crosswind operations at short strips present a different challenge. Narrow rural runways frequently lack the length to accommodate a long crosswind correction, meaning aircraft need to touch down precisely with minimal float. Turboprops, with their lower approach speeds — typically 70 to 90 knots versus 100 to 115 knots for light jets — have more control authority at touchdown and shorter stopping distances once on the ground. That 20 to 25 knot approach speed difference translates directly into shorter landing roll and more forgiving go-around margins if the approach goes wrong.
Soft-field and grass operations further separate the categories. The Pilatus PC-12 is certified for unpaved surfaces. The King Air C90 series handles grass strips routinely. Light jets, with their lower engine placement and higher approach speeds, are almost universally restricted to paved surfaces — both by certification limitations and practical engineering reality. Gravel ingestion into low-slung jet engines is a serious airworthiness concern that turboprops, with their propeller-driven intake geometry, handle far more tolerantly.
Which Aircraft Fits Your Mission Profile
The right aircraft isn’t the fastest or the most prestigious — it’s the one that completes your actual mission reliably, legally, and efficiently. Short-field performance should be the first filter in aircraft selection for operators who regularly access constrained airports, not an afterthought once the purchase decision is made.
Use this framework to determine where you fall:
- Primary destinations with runways under 3,500 feet: Turboprop is the only realistic choice. Consider the Pilatus PC-12 NGX, King Air C90GTx, or Daher TBM 960 depending on payload and range requirements.
- Mix of short strips and major airports, trips under 500nm: Turboprop wins on total trip time and access. A King Air 350 or PC-12 NGX covers the mission without compromise.
- Primarily paved airports over 3,500 feet, trips over 600nm: Light jet speed advantage becomes operationally meaningful. Citation Mustang or HondaJet Elite II for budget efficiency; Phenom 300E for outright performance.
- Occasional short-strip access needed alongside jet performance: The Cirrus Vision SF50 or Citation Mustang represent the best light jet short-field options, with the SF50’s 2,500-foot TODR approaching turboprop territory.
- High-altitude airports in the regular rotation: Turboprop is non-negotiable. The density altitude performance gap at elevations above 6,000 feet MSL is too large for light jets to overcome.
No aircraft wins every category. The operators who make the best decisions are those who weight short-field access honestly against speed requirements — rather than buying the jet first and discovering the runway problem later. For a deeper dive into aircraft performance, check out this comparison of Gulfstream vs Bombardier business jets.
Frequently Asked Questions
Short runway performance generates more practical questions than almost any other aspect of aircraft selection. The answers below address the most common points of confusion for pilots and operators evaluating their options, including insights on FAA regulations.
Can Light Jets Land on Grass or Unpaved Runways?
Almost universally, no. Light jets are certified exclusively for paved, prepared surfaces. The combination of low engine placement, high approach speeds, and landing gear design makes unpaved operations either uncertified, unsafe, or both for virtually every light jet currently in production. The sole meaningful exception in the broader jet category is the Pilatus PC-24, a twin-jet certified for unpaved surfaces — though at a significantly higher acquisition and operating cost than light jet alternatives. For grass, gravel, or dirt strip operations, turboprops remain the only practical option in the business aviation segment.
What Is the Shortest Runway a Light Jet Can Safely Use?
Under real-world operating conditions with a practical payload, 3,000 feet is the practical floor for light jet operations — and even that requires favorable conditions. The Cessna Citation Mustang and HondaJet Elite II come closest to that threshold, with published sea-level TODRs just above 3,100 feet. The Cirrus Vision Jet SF50 reaches 2,500 feet, but its payload and range constraints make it a specialized mission tool rather than a general-purpose short-field jet.
Several factors push the practical minimum higher than the AFM figures suggest:
- Part 135 operations require a 1.67x safety factor applied to landing distance, pushing required runway lengths substantially above published LDR figures
- Density altitude at non-sea-level airports adds 3–8% per 1,000 feet of elevation to takeoff distance requirements
- Surface contamination — wet pavement, light snow, or standing water — can increase stopping distance by 20–40%
- Obstacle clearance requirements may demand steeper climb gradients that reduce allowable takeoff weight at short strips
- Runway slope and surface condition are rarely accounted for in published AFM data but affect real-world performance meaningfully
For Part 91 private operations, experienced pilots can operate closer to published minimums — but the margins at a 3,000-foot strip in a light jet leave very little room for error, condition variation, or a rejected takeoff scenario. Most experienced operators set a personal minimum of 3,500 feet for light jet operations to preserve workable safety margins.
Do Turboprops Perform Better Than Light Jets at High-Altitude Airports?
Yes — and the performance gap widens significantly above 6,000 feet density altitude. Turboprop engines using flat-rated PT6 variants maintain their rated power output to higher density altitudes before the derating kicks in. This means a PC-12 or King Air retains a meaningful thrust buffer at high-elevation airports where a comparable light jet is already operating at reduced thrust and extended takeoff distances. At airports like Aspen-Pitkin County (7,820 ft MSL), Telluride Regional (9,070 ft MSL), or Leadville (9,927 ft MSL), turboprops operate routinely while light jets face significant payload penalties or outright operational limitations during warm months.
Is a Very Light Jet (VLJ) a Better Short-Field Option Than a Standard Light Jet?
In terms of runway requirements alone, yes. The Cirrus Vision Jet SF50’s 2,500-foot TODR puts it closer to turboprop short-field performance than any certified light jet currently achieves. Its smaller airframe and lower maximum takeoff weight of 6,000 lb directly enable that advantage — the same physics that limit larger light jets work in the SF50’s favor at short strips.
However, that short-field capability comes with meaningful operational trade-offs. The SF50 carries a maximum useful load of approximately 1,200 lb — enough for a pilot and three to four passengers with limited baggage, but not the flexible six-seat utility that a Phenom 100EV or Citation Mustang delivers. Its single-engine certification also restricts operations under certain regulatory frameworks and may limit instrument approach options at some destinations.
For operators whose primary mission genuinely demands both jet performance and short-field access below 3,000 feet, the SF50 is worth serious evaluation. For those who need the full payload and range capability of a conventional light jet, the short-field improvement a VLJ offers rarely justifies the operational compromises involved. The Pilatus PC-24 — a twin-jet certified for unpaved operations with a 2,750-foot TODR — represents the most capable short-field jet currently available, though at a price point well above the light jet category.
How Does Passenger Load Affect Short Runway Performance in Both Aircraft Types?
Every pound of additional weight increases takeoff distance — the relationship is direct and unavoidable. For light jets operating near their short-field limits, the difference between a half-full cabin and a full passenger load can push a marginal departure into an illegal or unsafe one. A Phenom 100EV at maximum takeoff weight of 10,582 lb requires significantly more runway than the same aircraft with three passengers and moderate fuel — a performance delta that matters critically when the strip is 3,500 feet and conditions are anything less than ideal.
Turboprops feel the same physics, but from a more comfortable starting position. A PC-12 with a 500 lb lighter load than its max takeoff weight might reduce its TODR from 2,650 feet to under 2,200 feet — still well within the operational envelope of most short strips it would target. That buffer means payload variation has less chance of pushing the aircraft outside safe operating parameters at constrained airports.
The practical implication for operators is straightforward: if you regularly fly short strips near maximum capacity, turboprops provide a performance margin that light jets cannot match. Calculating actual takeoff weight — not maximum certified weight — against the specific strip conditions for every short-field departure is non-negotiable regardless of aircraft type. Weight and balance isn’t paperwork; at 3,000 feet of available runway, it’s the difference between a routine departure and a serious incident.
When it comes to choosing the right aircraft for short runway performance, understanding the differences between light jets and turboprops is crucial. Light jets offer speed and comfort, making them ideal for business travel. On the other hand, turboprops are known for their efficiency and ability to operate on shorter runways, which can be a significant advantage in remote locations. For a deeper insight into the performance and cost considerations of business jets, you might find this comparison of Gulfstream vs Bombardier business jets useful.

