N2 / Nr split on shut down 206B
 

Been awhile since I flew a 206 and was checking the freewheeling unit on shut down. Aren't the N2 and Nr needles in the tach suppose to split when you roll the throttle to idle? They only split when I roll the throttle off after cool down. Is that right?? Thanks

B206/L Mmel
 

Anyone got a copy of a B206/L MMEL?

TT

FebVal,

It is a common misconception that you're supposed to see a needle-split when rolling the throttle of a 206 to IDLE. It does not happen. You might not even see a needle-split when doing practice EOL's. Or much of one.

You check the FWU two ways: a) by turning the rotor prior to startup, and b) by watching for the needle-split after shutdown.

MELs for just about everything can be found here: Flight Standards Information System (FSIMS)

Phil

Thanks Paco

Settled my question. Reference was an out-of-date MEL

So, now a question to open a can of worms: If and when would ppruners fly with an inop N2? :E

TT

and just remember, when practising autorotations, the idle stop is there to prevent you inadvertantly rolling the throttle to the fully closed position.:rolleyes:

Torquetalk:

Aside from the illegality of it, I see no practical problem flying with an inop N2 gauge.

I'm trying to recall...did the original (to the U.S.) D-model Astar have an N2 needle?

Bell's VERY SLOW response times on improving TT straps
 

Can someone please throw some light on why after over 30 years, Bell has been unable to come up with a set of TT straps that lasts more than 2 years? In 1999 when I was in their Mirabel office, I was told that they would be coming up with straps that lasts longer because they're using some new non corrosive metals and a better plastic cover. Then there was a Bell publication that said 'we're working on it - give us some more time".

Is it an economic reason (so they can have trailing and repeat revenue), engineering incompetence (engineers are incompetent on this project) or just no interest in fixing this problem. Kiowas TT straps are 'on condition'.

I see Eurocopter increasing life on some of their parts, Robinsons upping their maintenance from 2000 to 2200 for overhauls, etc. Why not Bell?

Can someone from Bell throw some light on this, please?

It was touched on a little bit when I was at the factory school last year. The straps between the OH-58 and the JetRanger are identical, the only difference is in the paperwork. It was mentioned that only one time have they had a TT failure, and I think it was in an OH-58. IIRC, there was a small hole in the epoxy coating, allowing moisture into the strap which then corroded the wire inside.

I'm sure they don't mind the extra revenue from all those straps, and they can reduce their liability by making them get replaced all the time.

1. Does the battery hot caption still work with lead acid batteries? Or is it only with nickel cadmium batteries?

NO: Lead acid batteries do not go into the condition "thermal run-away" as ni-cads do. Though with the newer type of ni-cad battery it seldom happens.

2. What does the battery relay warning caption alert you to?

Battery is off or disconnected from the charging system.

3. What does the button on the top of the control panel, marked PASS INT stand for?

Don't know.

4. What is the maintenance schedule like for the Bell 206?

Depends on the operator approved maintenance schedule. The 206 is not know for being maintenance intensive.

5. How much fuel does the 206 use in start and run up. I was told that 15 lbs - is that about right?


Don't know.

In crusie about 27 GAL US /hour

Bell's T&T Straps
 

Has anyone heard whether Bell has made any progress in extending the calendar life of its 206 series T&T straps? By 20%? 30% perhaps?

Bell's been working on this problem for over 30 years. I'm starting to doubt their sincerity in wanting to extend the life of TT straps. What kind of engineering challenge is it to make them more durable? Why is it taking so long (well over 30 years)?

Just wondering if anyone has an insight into this ...

AFAIK they are currently conducting trials on the current TT straps. There is no plan to change the design only a plan to prove that they can last longer than their current life. It does seem a nonsense when you remove them after two years and apart from a bit of grease they look brand new.

Just in the process of going through the paperwork to increase MAUW to 3350lbs from 3200lbs.... (and no not external load) on a 206 B3

I am sure most owner/operators know this, but apparently you can get this authorised providing skids etc are signed off by maintainer...

If you did not know this, you will be as happy as me!! :ok: