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Blog

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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More About Recurring Inspections and the Hoist Placed-in-Service Inspection

Numerous questions still linger for Army users about what inspections must be completed for the Breeze-Eastern external rescue hoist. Such questions are understandable since the Technical Manuals are not always clear...and what is there often differs from manufacturer recommendations. So, what inspections are REQUIRED for this hoist and when am I required to do them? The REQUIRED inspections for Army users are driven through the Legitimate Code File (LCF) and filter down to users in the form of recurring -18 inspections. The recurring inspections REQUIRED for the BL-29900-30-1 hoist are: Operational Check – due every time the cable is changed…
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P/N Correction on Hoist Crushable Bumper

This is a US Army issue... TM 1-1520-237-23&P shows the hoist crushable bumper/spring assembly in WP 3415, Fig 14-4, Item 23. The Repair Parts and Special Tools List (RPSTL) gives the NSN for this Item as 5340-01-512-0408 and the P/N as BL-12750-3. TM 1-1520-28-023&P is the same except that it is Item 24. The TMs are incorrect. BL-12750-3 is a shorter crushable bumper and was replaced by BL-15975-3 with the issuance of Alert Service Bulletin (ASB) BL-12756-1-A25-01 in 2002. The correct P/N is BL-15975-3. The current NSN also does not list the new P/N and that has caused some problems…
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Clearing Up Confusion About Hoist Mid-Section Covers

There are two hoist mid-section covers that cover the drum, level-winds, and part of the cable guide assembly. These two covers consist of an upper cover (plastic with clear panel) and a lower cover (metal) that protects the wiring harnesses that cross over from the motor to the controller. These covers get removed whenever a cable is changed and for the recurring measurements of the tension roller (every 6 months). They also get removed for replacement of either the pressure roller assembly or tension roller – both of which are outside Army Technical Manual (TM) authorized maintenance and require approval…
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30° Fleet Angle Limitation on the Hoist

Continuing along the same lines as previous articles related to controlling cable swing or oscillation, this article discusses an actual limitation for hoist operations – a maximum 30-deg fleet angle. Army users will be familiar with the -10, Chapter 5, angle of bank limitation while maneuvering with a rescue hoist load: 30 degrees. But where is the hoist fleet angle limitation stated? Not in Chapter 5. In fact, it is not in the -10 at all so it is often missed. Where do we find it? In the TM work packages under functional characteristics for the hoist, and in the…
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19-AMAM-01 vs Updated TMs

You may recall past discussions about Aviation Maintenance Action Message H-60-19-AMAM-01, which I often abbreviate as simply “19-AMAM-01.” Just to refresh your memory, the PD MEDEVAC Hoist and Cable Handling – Known Issues and Best Practices white paper (dated 28 MAR 2018) outlined a number of hoist-related issues based on about five years’ worth of research and became the “framework for change” for many of those issues. Subsequent to that, 19-AMAM-01 was released on 29 OCT 2018, implementing many of the recommendations from that paper. Well, despite all the great stuff in 19-AMAM-01, an unforeseen issue would rear its ugly…
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Controlling Hoist Oscillation – Advanced Techniques

We previously published an article entitled, “Controlling Hoist Oscillation – It’s All About Cable Length.” Be sure to read that article before this one. In that article, we discussed the basics of pendulum control. We introduced a pendulum simulator known as the PhET simulator from the University of Colorado, Boulder – a great online tool that allows users to experiment with controlling pendulum movement. We noted that changing the weight of the object has absolutely no effect on the oscillation. However, changing the length of the cable does affect oscillation and that effect can be significant. In fact, the greater…
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Orphan Pendants

As part of all the thermal testing on the pendants, a number of pendants have been left “homeless” at Breeze-Eastern. The pendants were either sent in without paperwork or the paperwork was misplaced. At any rate, if you sent pendants to Breeze-Eastern and have not heard anything back on them, use the Contact Us page to send the serial number(s) to us. You will be provided a status update. If your pendant happens to be one of the “orphan” pendants, they’ll get that shipped out right away.
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Four-Strand LUE #3 Underway at NTC

The third Limited User Evaluation (LUE) for the Four-Strand cable is well underway in the middle of the Mojave Desert, with the US Army Air Ambulance Detachment from the National Training Center (NTC) hosting the event. Phase I of the evaluation was completed 23-25 JUL 2019 by C Co, 2916th Avn Bn, Ft. Irwin, CA. Phase II of the evaluation will run for 90 days. The new hoist weight system (aka, “lift bag kit”) is also featured in some of the photos below. [wonderplugin_gridgallery id=10]
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Check Roller Housing Set Screws on Preflight

The BL-29900-30-1 external rescue hoist has a roller housing attached to the bottom of the cable guide assembly. The roller housing “houses” or “contains” a roller assembly, with four rollers that allow for fleet angle operations up to 30-deg. The roller housing attaches to the bottom of the cable guide assembly with three small 1/16” set screws. Over the past several years, there have been two reported instances of the three roller housing set screws backing out to the point that the roller housing disengages from the bottom of the cable guide assembly. This is not a load-bearing part of…
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