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● RDT COMM ·Marzolino85 ·August 5, 2026 ·19:14Z

Two helicopters, three flight phases: crane removal on a Swiss mountain (Säntisbahn rebuild)

A helicopter operation at Schwägalp during the Säntisbahn rebuild utilized two aircraft in three distinct flight phases. An H125 transported workers and concrete buckets to the new pylon construction site at 2,200 meters, while a Super Puma made 17 flights to remove crane sections, followed by the H125 evacuating workers back down the mountain.
Detailed analysis

The Säntisbahn cable car reconstruction at Schwägalp, Switzerland, offers a compact case study in the choreography of mountain helicopter utility work, a discipline that remains central to Alpine infrastructure maintenance in Switzerland, Austria, and other high-terrain regions where road access to construction sites is impractical or impossible. The operation described unfolded in three distinct phases using two different aircraft matched to two very different mission profiles: an Airbus H125 (AS350 B3-series) handled the personnel and material lift to the new pylon site at roughly 2,200 meters, ferrying workers and concrete buckets for foundation and structural work, while a much larger Airbus/Eurocopter Super Puma (AS332 or H215/225 family) executed 17 sorties to extract crane sections once the heavy lifting portion of the job was complete. The H125 then returned to shuttle the ground crew back down. This sequencing reflects deliberate aircraft-to-task matching: the nimble, cost-efficient H125 for high-frequency personnel and light-cargo movements, and the Super Puma's substantially greater external-load capacity — often exceeding 4,000-4,500 kg depending on configuration — for the singular, high-value task of dismantling and removing crane components that would be uneconomical or physically impossible for a smaller type to carry.

For working pilots, particularly those in helicopter external-load, utility, and heli-ski or heli-logging operations, this kind of mission is a useful reminder of how tightly Alpine construction flying is bound to weight-and-balance planning, density altitude management, and precision longline or short-final work at elevation. At 2,200 meters density altitude effects are already meaningful, and they compound further when the payload is an awkward, rigid crane section rather than a stable slung load like a concrete bucket. Pilots flying this kind of mission must account for reduced engine and rotor performance, altered autorotation and single-engine (for twin-engine types like the Super Puma) contingency planning, and often tighter margins for hover power available versus power required at the load site. The 17-flight cadence for crane removal alone signals a methodical load-splitting strategy, likely dictated by both the aircraft's maximum external load limits at that density altitude and the practical need to keep each sling load within safe rigging and CG parameters as crane sections vary in shape and weight distribution.

This operation also illustrates the enduring commercial niche occupied by heavy-lift helicopters like the Super Puma in an era when most public attention to rotorcraft focuses on EMS, offshore transport, or emerging eVTOL concepts. Construction and utility lift work — building cable cars, transmission towers, avalanche barriers, and remote infrastructure — remains one of the few missions where a large, older-generation twin like the Super Puma retains a clear performance advantage over smaller, more modern singles, and operators in Switzerland (such as Air Zermatt, Heli Bernina, or similar Alpine specialists) continue to rely on this class of aircraft precisely because no lighter alternative can economically replace it for max-load lifts at altitude. For business and corporate pilots less familiar with this segment, it underscores how diverse helicopter operations are beyond passenger transport, and how mission-specific aircraft selection — rather than a one-size-fits-all fleet — remains the norm in high-altitude, high-consequence flying environments.

Broader industry trends reinforce the relevance of this kind of operation. Alpine tourism infrastructure across Switzerland and Austria is undergoing a wave of modernization as aging cable cars and lift systems reach end-of-life, and much of that reconstruction work is only feasible via helicopter given the absence of road access at these elevations. This creates sustained demand for both light utility helicopters and heavy-lift twins, keeping crews current in longline, human external cargo, and precision construction-lift procedures — skill sets that are increasingly rare outside a handful of specialized operators. As electric and hybrid-electric aircraft development continues to target regional and urban markets, missions like the Säntisbahn crane removal are a useful counterpoint: they remain firmly in the domain of proven, high-payload conventional rotorcraft, and will likely stay there for the foreseeable future given the power density and payload requirements involved.

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