Israel’s first CH-53s arrived on 2 October 1969, in the middle of the War of Attrition along the Suez Canal. Egypt had just received a new Soviet P-12 early-warning radar, and Israeli planners decided to take it. On the night of 26 December 1969 paratroopers landed by Super Frelon helicopters overran the site at Ras Arab on the Egyptian side of the canal and dismantled it. Two CH-53s then lifted the equipment, the radar itself weighing about four tons, back across the water under cover of A-4s and F-4s. One helicopter suffered a hydraulic failure on the way but reached Israeli territory before landing. Israeli intelligence studied the system, which yielded new countermeasures against Egyptian air defences, and it was later passed to the United States.

The Yas’ur went on to move artillery and evacuate wounded in 1973, carry commandos on raids for decades, and fight fires on Mount Carmel in 1989. It also suffered terrible losses, including a collision in 1997 that killed 73 soldiers. During the 2006 Lebanon War a Yas’ur that had just landed troops was hit by an anti-tank missile and crashed, in what Israeli reports called the biggest heliborne landing since 1973. Repeated upgrades kept the fleet flying, but spare parts grew scarce; after an engine fire destroyed one in 2019, Israel blamed a known relay defect that had not been passed on. In 2021 it chose the CH-53K to replace them.

The King Stallion looks like its predecessors but is almost entirely new. Sikorsky called it one of the first all-digitally designed helicopters, assembled in a virtual reality lab in Stratford before metal was cut. Its three GE T408 engines give 57 percent more power than the CH-53E’s T64s for about 20 percent lower specific fuel consumption, and a new split-torque transmission turns 35-foot composite blades with 12 percent more area. The cabin is wider, able to take a Humvee or two standard 463L pallets, and full-authority fly-by-wire controls make it easier to handle in brownout.

The programme was not easy. A December 2018 restructuring followed problems including engines re-ingesting their own hot exhaust, which caused overheating and stalls in testing; the Navy and Marines said in December 2019 the problem was fixed. In operational test the aircraft flew more than 3,000 mishap-free hours and recovered a disabled Navy MH-60S from a California mountainside that nothing else could reach. Lt. Gen. Mark Wise declared initial operational capability on 22 April 2022, full-rate production followed in December 2022, and in August 2023 the Navy ordered 35 more for US$2.7 billion, eight of them for Israel. The Marine Corps programme of record stands at 200 aircraft.

The CH-53A used two GE T64 turboshafts of 2,850 shp driving a fully articulated six-blade main rotor and a four-blade tail rotor, with mechanical controls backed by three hydraulic systems and extensive titanium in the dynamic components. All fuel lived in the side sponsons. The CH-53D raised engine power to 3,925 shp in its T64-GE-413 form and introduced automatic blade folding; later D-models got a nitrogen-pressurised blade inspection system that warned of cracks.

The CH-53E and MH-53E added the third engine, the seventh blade and a titanium-fibreglass composite rotor; Germany’s CH-53GA upgrade gave 40 of its aircraft a new flight deck, autopilot and sensors from 2010, and Israel’s Yas’ur 2025 programme modernised its fleet again. The CH-53K reset the baseline: glass cockpit, full-authority fly-by-wire, health and usage monitoring, elastomeric rotor hub and composite blades, with Marine figures claiming 63 percent fewer parts than its predecessor and 57 percent more power. Lockheed Martin stresses that “full authority” means the flight-control computers command all of the aircraft’s motion rather than merely helping the pilot with stability.

• CH-53A Sea Stallion: first production model for the Marines, two T64s; 141 built including prototypes. Some became RH-53A minesweepers and TH-53A trainers.
• CH-53D: uprated engines and transmission, up to 55 troops; served the Marines until 2012. RH-53D: Navy mine countermeasures version, six exported to Iran. VH-53D: presidential support.
• HH-53B/C and CH-53C: US Air Force rescue and transport versions; most HH-53s were later rebuilt as MH-53 Pave Low special operations helicopters.
• CH-53G and GS/GE/GA: German licence version of the D, later upgraded for rescue and Afghanistan. S-65Ö: two for Austria. S-65C-3 Yas’ur: Israel, upgraded as Yas’ur 2000 and 2025.
• CH-53E Super Stallion: three engines, seven blades; Marine and Navy heavy lift from 1981.
• MH-53E Sea Dragon: Navy airborne mine countermeasures; 11 S-80M exported to Japan.
• CH-53K King Stallion: new-generation model with T408 engines, in service from 2022 and on order for Israel.

Heavy lift has never been cheap. Austria sold its two CH-53s to Israel in 1981 largely because of their high operating costs, and the ageing CH-53E fleet became notorious for the maintenance hours each flight hour demanded as parts wore out and replacements grew scarce. No official per-hour figure was found in the sources opened for this page, so the estimate in the table is deliberately broad: low tens of thousands of US dollars per flight hour for a three-engine helicopter of this size, depending on variant, age and what is counted.

The CH-53K was designed partly to change that equation. Sikorsky and the Marines point to 20 percent lower fuel consumption per unit of power, fewer parts, and fleet-wide health monitoring intended to catch faults before they ground aircraft. Purchase cost is the other side: Germany chose 60 CH-47F Chinooks over the CH-53K in 2022 largely because the Chinook’s lower unit price let it buy the maximum number of helicopters within its budget.