Passenger Boarding Ramp SEA 1845 — RTC LLC

Name: Passenger Boarding Ramp SEA 1845
Brand: SEA
SKU: 405355
Availability: InStock

Brand: SEA

$15,000 - $48,000 USD

MOQ: 1 pieces

Key Features

length: 7900 mm

width: 2176 mm

Working height: 1800...4500 mm

height: 3720 mm

Supplier Information

RTC LLC

🇷🇺 📦 🏭 🛡️

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Description

The SEA 1845 is a tow-behind passenger boarding stairway manufactured by RTC LLC (Regionalny Tekhnicheskiy Tsentr), a Khabarovsk-based Russian developer and producer of specialized airport ground support equipment. Configured to serve aircraft with door sill heights from 1,900 to 4,500 mm, the unit is compatible with a wide range of aircraft types — from regional turboprops to narrowbody jets.

The staircase platform adjusts hydraulically between 2,100 and 4,000 mm, driven by an automatic electric pump with a manual hand-pump backup; a calibrated height scale and mechanical lock ensure precise, repeatable positioning at the cabin door. A towbar fitted with a loop connector accepts standard baggage tractor couplings and locks in the raised position for safe apron transit; the movement control panel is mounted on the towbar itself, allowing a single ramp agent to maneuver the stairway at up to 5 km/h and approach the aircraft from at least 10 metres.

The suspended front boarding platform (2,000 × 1,400 mm) is fitted with folding side handrails and accommodates up to 30 passengers simultaneously. Steps measure 300 × 1,120 mm with selectable incline angles of 21° or 38°.

Four stabilizing belts and hydraulic outriggers anchor the unit during boarding. Solid 4.00-8 rubber tyres eliminate puncture-related downtime, and the unit can be towed on the apron at up to 25 km/h.

An integrated electrical system provides a signal lamp and work lights for night operations. Power comes from a KIPOR diesel or LIFAN gasoline engine, with a total operating weight of 1,900 kg.

Details & Equipment

Fleet & Apron Deployment

Production Batch at RTC Factory

A row of freshly completed SEA 1845 stairways outside the RTC production facility in Khabarovsk, illustrating the manufacturer's batch production capability and consistent finish standards.

Active Airport Service

The SEA 1845 docked to a narrowbody jet on a commercial apron, with ramp crew on the boarding platform — demonstrating real-world compatibility with scheduled airline operations.

Docked Position Detail

Rear-angle view of the unit positioned against an aircraft fuselage, showing the enclosed upper boarding platform with weather-shield doors, the yellow hydraulic lift mechanism, and the compact chassis footprint.

Mechanical Design

Staircase Structure

Side view of the staircase raised to working height, highlighting the 1,120 mm wide non-skid steps, double-rail handrails on both sides, and the yellow hydraulic scissor-lift assembly providing the 2,100–4,000 mm adjustment range.

Full Extension with Boarding Platform

The SEA 1845 at near-maximum elevation showing the enclosed upper boarding platform, the full stair run, and the towbar at lower left — the tow loop connects to a standard baggage tractor for single-operator positioning.

Low-Height Access Position

Front-approach view of the stairway at minimum working height beside an aircraft, illustrating the clear boarding path, the non-skid step surface, and the solid rubber tyres on the chassis axle.

Features

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Hydraulic Lift with Backup

Platform raises from 2,100 to 4,000 mm via an automatic electric pump with a mechanical height lock and calibrated scale for accurate docking; a manual hand-pump backup keeps operations running if the primary system fails.

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Single-Operator Control

One ramp agent controls approach speed and direction directly from the towbar-mounted panel at up to 5 km/h, guiding the stairway to within 10 m of the fuselage without additional crew.

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Wide Aircraft Compatibility

Designed to service aircraft with door sill heights from 1,900 to 4,500 mm, covering the full spectrum of regional turboprops and narrowbody commercial jets with a single unit.

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Night Operations Ready

An onboard signal lamp and dedicated work lighting allow boarding and deboarding in low-visibility and overnight conditions without the need for supplementary ground lighting equipment.

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Stable Apron Footprint

Hydraulic and screw outriggers combined with four stabilizing belts lock the unit securely during passenger flow, while solid 4.00-8 rubber tyres eliminate flat-tyre risk on abrasive apron surfaces.

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Dual Engine Options

KIPOR diesel and LIFAN gasoline engine variants are both available, with familiar domestic brands simplifying spare-parts procurement and scheduled maintenance across Russian airport operations.

Buyer Benefits

One unit covers aircraft door sills from 1,900 to 4,500 mm, removing the need for multiple stair models across a mixed fleet
Single-operator workflow reduces ramp staffing requirements without compromising passenger safety or throughput
Automatic hydraulic lift with manual backup ensures boarding continues even if the primary pump fails
Solid rubber tyres prevent flat-tyre delays on coarse apron surfaces, supporting tight turnaround schedules
Domestic KIPOR and LIFAN engine options ease spare-parts supply and reduce maintenance lead times in Russia
Mechanical lift lock prevents platform drift during boarding, eliminating a common source of ramp incidents
Built-in signal lamp and work lights enable early-morning and late-evening operations without additional ground support

Applications

Passenger boarding and deboarding at regional and international airports Remote stand servicing for narrowbody jets where jet bridges are unavailable Regional turboprop and commuter aircraft turnarounds requiring low platform heights Mixed-fleet airports needing one adaptable stairway for different aircraft door heights Night and low-visibility ramp operations using the unit's integrated lighting system Low-cost carrier ground handling where fast, reliable equipment is operationally critical Temporary or seasonal terminals without permanent boarding bridge infrastructure Charter and general aviation handling at smaller aerodromes with limited GSE inventory

Source: official manufacturer website