Look at the exhaust stacks on many PT6 installations....rotated to take advantage of prop swirl.
They also leave exhaust trails down the fuselage, ask any PC9 mechanic!! Wiped many off myself.
I remember there was a fair bit of aero work done on the Beech JPATS PC 9 derived contender to stop...
Pratt and Whitney have a Service Bulletin whose number escapes me at the moment that gives dosage levels for a lubricity enhancer called DCI4A. It is actually a corrosion inhibitor primarily but does "up" the lubricating properties of the fuel as a by product. The dose levels are so small that...
They definately will not be going on an F model. Erickson built the only F models and only they and their Italian customer operate F model cranes. Sikorsky never actually built an F model. So it will be the restricted category guys only.
Interesting how your customer has 95% of the drawings...
VMSETHAN, I am assuming you are going the STC route for these blades and not trying to PMA the things? That would be extremely tough. Even though restricted category, your blades will be subject to the same Part 29 regulatory "guidance" as an OEM blade.
I think you will find that "We have...
FAA Order 8110.37D Chart G is what I think you need.
Then go to the FAA website and search the DER listing (a .pdf file unfortunately) for the person with the right delegation.
Chart G guys can find compliance for the testing side of things by the looks of it. Is that what you are after?
If you have detection, suppression and a shutoff valve on the firewall that is fireproof you may well get away with aluminum tubes / fittings for fuel. Rational being that you detect the fire, shut off the supply of flammable fluid and suppress the residual fire all within the fire resistant 5...
The main rotor blades for the CH54 and S64 (CH53 are the same I believe) are manufactured using an extruded aluminum spar with fabricated sheet metal pockets bonded onto the rear face. The spar is a "squashed D" section and is most definately twisted down its length (as most blades are). The...
When I moved from the OEM world to an owner/operator/OEM world, the thought of PMA parts scared the brownstuff out of me...what do they (PMA houses) know about how a fuel nozzle of vane works? Turns out quite a bit in reality. They have to qualify the part by either test and computation or by...
The engine OEM will have an installation handbook (or similar) and it should give you limitations for operating pitch, yaw and roll angles along with durations at these limits.
If you look at the V22 installation, the Allison (Rolls Royce now) engine is operated in the vertical through to...
When I moved to the States I found the hardest thing about driving to get used to was the rearview mirror not being where hundreds of hours of preconditioning driving said it should be...I kept taking furtive glances at the door post.
I believe the helicopter pilot positioning is due to the...
We have a situation designed by the OEM of a 304 cres bushing being press fit into a 6061 fitting. It is a dry fit, no plating or passivation called out. As part of a repair, we intend to seal both ends of the bushing/fitting interface effectively keeping moisture out and (from my limited...
Just a question to Reggie1968. If you extract a dimension by measuring off of the blue print and do not get the drawing updated, what do you inspect the part to?? In my experience, unless the drawing is a non-dimensioned full size one (known as a lofted part, or flat pattern - which will have...
