Aug 14th

Battens falling out of a trike wing during flight

By Rizwan Bukhari


A few months ago I watched a trike crash video. It was somewhere in Russia. It was a fatal crash.


This trike was a single person trike with a 80 hp 912 on it. In the comments, there were many opinions (guesses) as to what caused it. Some pilots were of the opinion that there was too much torque.


One person said the cause of crash was battens falling out of the wing during take off deforming the wing causing the crash. Can this really happen?


My current trike wing has strings to hold battens in their place. My questions is


1) How much pressure (if any) is on these batten strings, especiallly during flight?


2) Is Bungee string a better way vs just the regular strings becuase a bungee can stretch under pressure?


3) Can these batten strings actually break in flight?


4) If a batten string breaks in flight, how likely is it that a batten would slide out of the wing and fall out?


5) If one is faced with such scenario where the batten is falling out, what is the best course of action?






Jul 10th

almost goproless

By monty stone

the preflight went ok, the parts i landed with last week were still there. i mounted my new $65. adventure x4 gopro knock-off camera looking backwards, (i can then see where i,ve been!) i screwed my go-pro to the side of my brain bucket,( no tether) then taxied over to 11/29. on the way i swung my bar forwards, backwards and left and the 'other' left, i felt a 'twang' as a stay wire hit the go-pro, i briefly considered checking it, but 'moronic stupidity' won and i proceded with plan A to take off. no adventure flight no 'trike-abatics, no spirals or ,tumbles, just a few laps around the area, then landed on the 'big plane' runway taxied to my hanger,shut down, took my helmet off to turn my gopro off, it wasn't there, gone! no longer mine! now i'm blessed with an excellent memory, though it doesn't last long! did i mount it? is it still in my bag? nope, not in the bag,the clamp screw was in and tight! WTF! then i remembered the 'twang'. i trudged along the taxi-way, then i saw this little silver speck in the distance . yep there was my little gopro,laying on it's back, stareing lifelessly (sniffle) with it's one little eye aimed  at the sky it would never again witness,(more sniffling) but wait! sos was on it's screen! i hit the power button, it works! a tiny scratch ( 'tis but a scratch!) the only evidence of being callously thrown to the blacktop. tetherless. i learned from this, make SURE the clamp screw 'goesinta' ALL the holes, and let the stay wire 'twang' the camera,(at least once!) before take-off. if it hadn't been 'twanged' it would have gone through the big fan, in flight, with all the 'inconvenience' of a prop strike. the 'knockoff' x4 seems to work fine, easier to program than the gopro, and accepts the 'cheapo' cards, the gopro won't, i don't anticipate throwing it to the blacktop yet to test it's 'gopro toughness', maybe next week! monty



Jun 10th

Airborne 912XT w/ Streak 3 wing

By Doug Boyle

This beautiful Red, Black, and White Streak 3 wing flies 65-70 mph behind the XT 912.  It is an extra trike that I'm willing to sell for less than 30k!  No damage or hanger rash and comes with Lynx helmets/headsets, Powered Interface, and an Icom A6 radio.  It has a BRS installed but is out-of-date.  The XT 912 is a 2007 SLSA and has 725 hours, in annual, and well-maintained.  The wing is bagged and ready to ship to the new owner.  This is a great price for a great trike!  Instruction is available if you desire to drive/fly it home from Winston-Salem, NC.  Or, you can take delivery in Rochelle, IL at the conclusion of PreOsh on July 18.  Doug Boyle (336) 414-2522

May 4th

Mogas Locator

By Craig Valentine
iFly makes one of the best aviation GPS's available and it's especially popular in Light Sport and Experimental aircraft. They are also one of the most responsive manufacturers, as they implement  features suggested by their users through a spot on their website called  "iFly Wish List". To get there: - Support - Forum - iFly Wish-List
I've talked to them and posted the following on their website under "iFly Wish-List":

It's always a problem finding Mogas for my 100 HP Rotax engine while away from my home field. A few airports list having Mogas but it's often not available anymore or they don't have the Premimum Grade I need...another words, not up to date and unreliable. How about creating a new section under "Destinations" at

Pilots can write in the new "Mogas" section under "Destinations", fill out a form about availability of Mogas at an airport or how far away. For example, a common place for traveling pilots to get Mogas in California is Harris Ranch (3O8). Nothing is listed in Airport Information but there is a gas station 50 yards from the airport parking and mostly just us locals know about it and use it.

Next, iFly would use this data to create an additional Mogas - "M" icon under "Fuel Prices" and "Map Mode & Layers". Enable this "M" icon and an "M" would show on the screen at the airports where someone has filed a report. Tap on that airport and have a place on the Airport Information where you could read the filed reports and decide if you want to walk to that gas station or perhaps an airport car can be used. Subsequent users could confirm the accuracy or change the data if necessary. 

With this data base, it would be possible to fly most places in the US and find Mogas.


There's a good chance iFly will implement something close to this, this summer and especially if people go to the iFly website and comment on my post. Do you like the idea of having a National Mogas Database for pilots? Tell them!  Would you buy this GPS if you knew you could find Mogas all over the U.S.?  Tell them!


May 1st

Apollo Trikes Urgent Notice - Inspection and Replacement of clip batten tips

By Abid Farooqui

Hi All:

This is a notice for all Apollo trikers that have Profi TL or Reflex series of wings.

It is mandatory to check the integrity of all plastic clip batten tips every 50 hours for the trailing edge (all made by Airborne) and replace any that are suspect at all. Its difficult to judge the strength of the clip closing and thus is during an open and close check anything is suspect at all, please replace the tip immediately. Any of these tips that have been forced open once should not be re-used as they lose a significant amount of their holding resistence to open. These should never be put back together and re-used.

Although SilverLight Aviation is not responsible for other brands but we highly suggest to all trikers flying wings with these Airborne produced clips to follow the same advice we are providing our customers.

These tips can be purchased from various sources like by calling us, calling Northwing or via Aeros or Airborne. All of them come from the same source and produced by Airborne.

In our new wings we do not use these tips any longer and have switched to string batten cords. 

A mandatory safety bulletin will be going out to our customers who are known to have wings with these tips on their trikes. Please spread this if you know someone with these tips in their wings.

This bulletin is offered as a preventative cautious approach based on the following Oz Report and video of a hangglider getting into an unreciverable spiral dive by experienced pilots and recreated by German DHV test pilot.


Apr 30th

my 2 cents, smoooooth is good!

By monty stone

to make a short story weally long, (as the waskally wabbit wote), every flight begins with a take-off, and ends, usually, with a landing.( with a bit in between!) both regimens can be performed, successfully, dependant on territorial surface, atmospherical conditions,pilots preferences (quirks), at 'odds' with current teachings. whether the three-three inch wide strips we will be using are on a well manicured (faa funded) mile long blacktop runway, or some 'weed' farmers 'weally weally wuff woad under wildly fluctuating conditions the acknowledged trike 'gurus' tend to tap dance around a bit re the ideal, perfect, pristine landing sequence. understandably reluctant to 'piss off' their fellow 'industry leaders' i've read 'qualifying comments' ranging from 'NO EXCEPTIONS all the way to WHEN SAFE TO DO SO. i'm reffering to full stall, suggestion bar ALL the way forward agin the down thingamy tube,if any, big fan idling,minimum airspeed. it would be interesting to watch a 'friendly' contest between these guys flying ONE trike, with a large 'floaty' wing landing on varying surfaces with an unknown, but significant variable crosswind component. i doubt that the 'perfect' landing regimen would be adhered to! i was teached, way back in a previous century, (i'm not saying which one!) to always leave a 'little in the bank' when landing, to spend some, if neccessary. well, with 4k plus arrivals ,(some of which were fairly smooth!) . this has worked ok for me,(with help from lady luck) with various surfaces and conditions. contrary to some , almost hysterically rigid doctrines demanded by some 'industry leaders'. now i'm not advocating 'blazingly fast' arrivals, just a coupla' furlongs-a-fortnite above minimum controllable airspeed, enabling the average 80 yr old trike driver (like moi) to smoooothly re-attach. the ONLY occasion i see for the 'perfect' landing is due to the roll out area to be drastically reduced by a suddenly appearing sink hole, or a herd of effelumps grazing on the runway, or your brakes 'fall off', or, as demonstrated (un planned) in my 2006 arizona crash video with NO run-out possible, yeah ameliarating inertial damage by getting 'er down 'weally slowly, is good.  i prefer smooooth landings every time, (not dropping in and having your dentures fall out) , except for the exceptions......monty                   

Apr 12th

Spiral diving claims another victim

By Rizwan Bukhari

There is a lively discussion on . Apparently an Airborne crashed killing the pilot and the passenger. This is a different Airborne than the one we heard about crashing recently.


According to the dicussion on the pilot spiraled into the ground from 500 feet.


This is very tragic and sad. My condolences to the family and friends. I think, going forward spiral recovery should be made part of PTS manuvers.



Mar 31st

FAA Order 8130.2H Airworthiness Certification of Products and Articles

By Rizwan Bukhari






Airworthiness Certification of Products and Articles$FILE/8130.2H.pdf



Operations Limitations Job Aid,$FILE/8130.2H_Operations_Limitations_Job_Aid.pdf

Mar 29th

Trike Shimmying at landing

By Rizwan Bukhari

I went with my friend for a flight today, I fly a Northwing Navajo with HKS 700e. We did a few touch and gos, on two of the landings we felt a significant shimmy.

Now on my trike, I already have a dampner, I am tyring to figure out what could have caused the shimming, the only thing I can think is that my tundra tires were a bit low on air and also the second landing was done probably a bit faster, with about 6 mile cross wind.

Has anyone who owns a Navajo trike exprienced this? sometimes I think due to a four stroke engine, maybe the rear part of the trike already is heavy to begin with, add a 215 pound passenger and slightly deflated tire, coupled with a cross wind landing and all of the above could have contributed to the shimmy.

The first time my speed during the shimmying was around 20s or so, so I punched the throttle and took off again, the second time I applied the brake and that kind of stopped the shimmying.

None the less, I would like your input. For those of you who have tundra tires, what is the pressure you keep in those tires?

I spoke to trike pilot friend, he recommended to check my axles and rear gear assembly, for any cracks or damage and also to land slow and keep the nose wheel up as long as possible at landing. I couldn't find any damage on the trike, so I was hoping for anyone else who has experienced the same shimmying, that could shed some light on this topic and share their solution.





Feb 19th

Oil For 582 Rotax

By Dick Hall
About a year ago Paul Hamiliton gave recommendations for 2 stroke oils.  A clip from the article is below:

Use a good well know reliable oil. Many engine failures are from some new oil mixture, some magic new oil or someone trying to save money on cheap oil. I recommend three types of oil. The most reliable over history is the Pennzoil - 2-cycle Air-Cooled Engine Oil. This has been tested and is proven to be the best dinosaur oil. This is the preferred oil if you are in a humid area and/or go for longer periods without running your engine. Pennzoil - 2-cycle Air-Cooled Engine Oil produces the least amount of carbon deposits (for dinosaur oil) and keeps oil on internal components with so they do not corrode when sitting in a humid environment  for longer periods without being run.

The new Aero Shell Sport PLUS 2 has been recently developed specifically for Rotax 2 stroke engines and has been tested and provides the same protection as the Penzoil. This is another recommended viable option.

I just installed Oil injection on my low hour 582 grayhead and wanted recommendations for 2 stroke oil which I got from the above blog.  The only problem is this.  Aero Shell Plus 2 is no longer made and is discontinued according to the supplier.  As is Pennzoil 2 Cycle air cooled oil.  The only replacement is Pennzoil Outdoor Multipurpose 2 Stroke oil. See discription below: 

Pennzoil® Premium Outboard and Multi-Purpose 2-Cycle Engine Oil is a high-performance 2-cycle engine oil meeting or exceeding the warranty requirements of all leading manufacturers of 2-cycle products including chain saws, lawn mowers, motorcycles and string trimmers, as well as outboard engines made by: Johnson/Evinrude, Mercury Marine, Yamaha, Suzuki, Nissan, Force/US Marine, Mariner, Sears and all other manufacturers requiring NMMA TC-W3® oil.

Any opinions on this using this oil would be appreciated.  It seems there isn't much of any other choices other than the oils found in the Walmart aisle.  It appears that manufacturers like Shell, Pennzoil and Castrol don't have enough of a market to justify producing a specialized oil such as Aero Shell Plus 2, as they only produced this for a little over a year.  Comments are welcomed