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Murfreesboro, TN  37127
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Now Offering Zephyr Training

Now Offering Zephyr Training

In coordination with Zephyr International LLC, Vertical Lift Consulting is now offering training for the Zephyr Rescue Hoist Ground Support Equipment (RHGSE). Training is available for this equipment in one of two ways: On-site at the manufacturer’s location in Conway, SC.Off-site where we bring the training to you. Our training will mirror the 2021 On-Site curriculum for Zephyr International, which is now limited to one day with a maximum of ten (10) students. The 2021 schedule for on-site classes is as follows: Thursday, 28 JANThursday, 15 APRThursday, 24 JUNThursday, 26 AUGThursday, 28 OCT You can register for these classes or…
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BBB Accreditation

BBB Accreditation

Vertical Lift Consulting is now fully accredited with the Better Business Bureau! We took this additional step to provide our customers that extra "warm fuzzy feeling" that comes from knowing that you are dealing with a properly vetted and fully accredited organization. Click on the BBB Seal below to view our profile, leave a review, or even make a complaint. Like any other business, we appreciate good reviews... But if, for any reason, you feel that you have had a less-than-ideal experience with us, please give us a chance to make that right before leaving a negative review or making…
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Inspecting Grooves on Level Wind Shafts

A question was recently asked about inspection of the grooves on the level wind shafts. An inspection of the level wind shafts is called out in TM 1-1520-237- and 280-PMI as follows: "Check hoist rollers and level wind for wear, corrosion, and security." Someone digging deeper into Breeze-Eastern’s Flight Line Operation and Maintenance Manual (OMM) for the hoist would notice the following diagram in Section 501 – Checks and Inspections: In addition to the PMI, the level winds should be inspected any time the width of the grooves is suspect (for instance, you notice metal shavings in/around the grooves or…
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Removing #2 Engine Inlet with EMRH (US Army Black Hawk)

Removal of the Engine Inlets is required during the “EVERY 120 HOURS” inspection on the Black Hawk helicopter in order to access and inspect the engine output shafts. Left engine inlet shown. This is usually pretty straightforward except…well, the external hoist is in the way for the #2 (right side) engine inlet. Units with the ESSS-Mounted Rescue Hoist (EMRH) have fewer options than units with the Integrated Hoist Mount (IHM). Units with the EMRH can either remove the hoist, which can be a lot of work, or they can finagle the “arm” in such a way to create the required…
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Popping Hoist Circuit Breaker During Squib Check

An aircraft just came out of phase and everything seems to be checking out, with one exception – the hoist. The hoist itself operates fine, but every time you do the published squib check the 5A hoist cable shear circuit breaker on the DC ESNTL BUS pops. As with any troubleshooting related to the hoist, you know that the problem is either hoist-related, aircraft-related, or it is somehow related to one of the harnesses in between the hoist and the aircraft. You are putting the same external hoist back on the aircraft, so you don’t suspect that is the problem…
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A Caution about Removing External Hoist from Aircraft

An external hoist was recently submitted on an Army Product Quality Deficiency Report (PQDR), after having “structural failure” and “broken hardware.” Specifically, there was a fracture of the mid-section on the right side of the hoist, between the tension roller and the inboard level wind shaft, as well as a broken cap screw. These deficiencies were confirmed by Breeze-Eastern upon receipt of the subject hoist. Initial failure analysis revealed that some of the hardware on the three primary structural components (mid-section housing, and left and right flanges) was “missing, loose, or found to be deformed.” Those components were sent out…
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Update on Hoist Cable Set Screws

What is the purpose of the cable set screw? You know…that small screw that gets torqued to 10-12 in-lbs after installation of a new hoist cable? Let’s start off by saying what IS NOT the purpose of the screw. It IS NOT the purpose of the screw to hold the rated load of the hoist (600 lbs). If that WAS the purpose, it would need to be a much larger screw, indeed! So, if it is not the purpose of the set screw to hold the load, then what IS its purpose? The purpose of that screw is simply to…
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Cable Reseat vs Post-Operational Check…one defeats the other?

You completed hoist operations for the day and concluded your flight with a cable reseat of 150 lbs. After shutdown, the aircraft was towed into the hangar and, per the required Post Operational Check in the Army checklist, the “amount of cable used” was reeled out in order to inspect it for “corrosion, kinks, separated strands, wear, and broken or frayed wires.” Question: "What good did a reseat do for me if I’m just going to follow it up with a cable inspection that leaves loose wraps on the drum?" That’s a very good question and one that has been…
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Tagline Techniques, Part 1

Taglines are used to minimize spin, swing, and oscillation (conical rotation) of hoist devices. Spin is an issue because the hoist hook has a swivel bearing. That swivel bearing is a must so that torsional forces in the cable (above the hook) can depart the system. Without it, the cable would unravel. An unfortunate by-product is that everything below the hook can also rotate and that can present its own challenges. Spin typically results from the effects of air movement (e.g. wind or rotor downwash). A suspended object will rotate so as to present its smallest surface area to that…
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Ultra-Lok Enters Testing

Ultra-Lok Enters Testing

The auto-locking hoist hooks have gotten a lot of press in the last couple of years, and for good reason – dynamic rollout is a “clear and present danger” when using hoisted devices that are susceptible to rollout and when using hooks that can be in an unlocked state while lifting. To recap, dynamic rollout (also called “ring rollout,” “hook rollout,” “forced rollout,” or just “rollout”) is the unintentional separation of a hoisted device (rescue strop, seat, basket, litter, etc) from the hook. Rollout can only occur if all three of the following conditions exists: Susceptibility – the geometry of…
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