Vertical Reference

Vertical Reference - Helicopter Article Database

Welcome Guest

Search:

Some Utility/External/Longline Advice

View PDF | Print View
by: vertrefadmin
Total views: 887
Word Count: 1893

Some Utility/External/Longline Advice by Rey Madrid
Brief your passengers very well before doing any toe-ins. Make sure they know to transfer their weight slowly from the helo to the ground. Make sure they know how to unload their gear without causing you to rock too much.
While working in Alaska and the lower 48, I had the chance to do a few contracts that required a little skill. I had none but this is what I learned:

DON'T LET ANYONE BRING BEAR SPRAY IN OR NEAR THE HELICOPTER! Had one go off 20 feet in front of the helicopter and still got it in the cabin of the helicopter. It doesn't work on Alaskan Brown Bears anyway. Bear Spray is just "flavoring" for the bears.

Flying in Bad Weather: Go lower and slower until you are at a hover. Never fly faster than what you can see ahead of you. When approaching a ridge that may have crappy weather on the other side, approach it at an angle so you can turn away from the ridge if the weather looks crappy on the other side. Don't be afraid to hover over a tree in bad weather and "tree walk". Be careful when you are "tree walking" over a ridge: I once was hovering over what I thought was level ground when I realized that I was in a 40 degree bank and level with the side of a cliff (I wondered why the trees looked like they were growing at a weird angle!) Always bring a telescoping fishing pole or gameboy so you can have something to do if you are forced to land due to weather. Use a windshield protectant (like 210, Plexus, Lemon Pledge...) to help the rain "slide" off the wind screen (this was a requirement when flying in Southeast Alaska). Find some good sunglasses that have high contrast (shooting glasses or Seregenti). Having sunglasses to see the cloud textures has kept me from dying on a few occasions. If the snow or ice is building on the windshield then it's probably building up on the rotors too. Bring something to wipe the INSIDE of the windshield on high moisture days. Don't go IFR inside the cabin. Don't trust any weather forecasts! Ask other pilots what it was like and err on the safe side. Never go for the sucker holes. Use snow baffles.

Slinging: If slinging in the Jetranger, add some weight to the front seats (survival kit works great) so you can see the load better; This makes the helicopter fly more level and the load will appear to be more forward. Always try to make up your own sling loads if you can. I've been hooked to a 212 load when I was flying a Hughes 500D; (Heavy loads tend to remain on the ground). If flying a 500D, I liked to have the wind to my right when making the approach. This keeps the nose of the 500 aimed to the right, I use less pedal, and I have a better view of the load. When slinging with a longline over 200 feet average out the swing in the cable. Sometimes the line is swinging all over the place but the load is actually motionless. If slinging in the Astar, I used at least a 100 foot longline even for jobs that would only need a tag line. I can see the load better this way.

When you are approaching the tower don't be in a hurry.
Flying with people on your skids: First of all, I have great respect for all who fly OUTSIDE of the helicopter. I did a brief job doing powerline construction (clipping, declipping line...). For those who don't know what this is, it is having lineman (usually 2) standing on the skid. You fly them up to a tower and they change the clip holding the powerline/cable to a pulley so the line can be pulled through and changed to whatever line they need. Those crazy lineman are nuts but we are just as nuts to fly them! When you are approaching the tower don't be in a hurry. If the towers have them, watch the tower markers when you are close to the tower. If the markers are moving that means your rotor is too close and could hit the tower if the lineman pulls hard on the tower. Watch your lineman to make sure they touch the grounding stick first. This doesn't hurt you at all but the other line guy usually gets zapped if he touches the line before the grounding rod. Keep your tail clear of the line at all times. It's easy to get caught up watching the line guys work and forget that the line actually dips down behind you (or it may be at an angle). Use the time enroute between towers to relax. Watch for the crossing powerlines. They are hard to see when you are concentrating on the main line. If you can, get out of flying powerline construction if you want to live very long! Seriously, I have a lot of respect for powerline helicopter pilots who are good.

Doing Toe-Ins: Brief your passengers very well before doing any toe-ins. Make sure they know to transfer their weight slowly from the helo to the ground. Make sure they know how to unload their gear without causing you to rock too much. Teach them how to close a door and not move the helicopter too much. If they are jumping from the helicopter at a hover, brief them on how to let you know they are releasing and how they are to jump. Compensate for the weight shift when flying. When you are toeing-in, never break your concentration. You are always flying even though your skid is in contact with the ground. Make sure your passengers are secure in where they are standing before lifting from the toe-in spot. You can blow a passenger right off a cliff if you are not careful.

Keep your tail clear of the line at all times. It's easy to get caught up watching the line guys work and forget that the line actually dips down behind you (or it may be at an angle).
Landing in Hover Holes: Don't land in a hover hole unless you are comfortable with the size of the confined area. Most pilots start out their line pilot careers landing in large LZ's, then they get smaller and smaller until the pilot hits something. Then the LZ's get big again until you find a comfortable size. Open the door if you can on landing to clear your tail (obviously don't do this in dusty places). Keep the landing zone in sight the entire approach. If you lose sight of the landing spot, go around. When you are landing in a tight spot, watch the tree branches for movement. Your downwash can blow a branch away on initial hover into the hover hole but then the branch can move back into your rotor. Keep the closest clearances on your side (left side if you are flying a 500D). This way you know that the clearance on the other side (your blind side) should be more than what you are looking at. Look all around the landing area. Check for lines, snags, anything that will affect the approach or departure from the hover hole. Remember how you got into the hover hole (down, left, turned right a little, then down again...) then do the reverse to get out. Usually the wind down in a hover hole is relatively calm but be careful of the weird air currents. Always lower the collective slowly when on the ground; You may be landing on something that isn't stable. Never power down to idle if the landing site seems at all unstable. Before lifting, look above you for things that you flew under to get into the LZ. You might take off into something that you flew under.

Deep Snow: Use tundra pads. Bear claws with the pad on the front part and the back of the skids seems to work better than the full length tundra pads (don't get bent or broken on rocks as much). Also, full length "skis" are not very good for heli-skiing or doing toe-ins. "Skis" tend to ski down glaciers and snow too. Try to pick something (a rock, tree branch, dirt on the snow...) to land to. Use your landing light to see the texture of the snow (even in daylight). Be cautious of landing in a bowl of snow (i.e. all around the helicopter the snow slopes up). If landing in powder, use the same technique as landing in dusty areas. Watch out for landing on cornices; they may break away. Fly around the spot you are going to land at to make sure there are not cornices on the back side. After contacting the snow with your skids, pack the snow down by lightly moving the collective up and down. This will save you from having a heart attack when the helicopter shifts after you have landed. Watch out for whiteout. Just because you can see the landing spot doesn't mean it is safe to fly in. Make sure you know how high you are above the snow or be sure you can see texture on the snow before going over snow with no rock or flagging references.

That is just some advice. I don't know that much about flying so I'm sure more of you can contribute more information about utility flying. Thanks for reading. - Rey Madrid

About the Author

Rey Madrid is an active helicopter pilot in Alaska with 20 years of helicopter experience.


Rating: 4.00

Comments

No comments posted.

Add Comment

You do not have permission to comment. If you log in, you may be able to comment.