BO 105 - Good, Bad or just Ugly?

[skadi]

Does the 105-15170 CBS-5 MRBs have pendulum absorbers or not ?

I think yes, at least all the CBS5 i've flown had them.

skadi

[bolkow]

I think they can be fitted at any point. I do know one of the Irish Helicopters bolkows did not have them for most of its life and has now sprouted a set

[Blind Bob]

I don't seem to able to find a reference in the FLM but I'm sure if you fit them you increase the MAUM by 100kg.

[Mihail]

BO 105 CBS4 purchaise

Hi All,
looking for two BO 105 СBS4 / СBS5 low time, available for purchase.
if someone selling СBS4 / СBS5 pls let me know by email to [email protected] or call [phone].

Regards Mihail

[aseanaero]

I don't seem to able to find a reference in the FLM but I'm sure if you fit them you increase the MAUM by 100kg.

Yes , without the 'dogs balls' vibration absorbers there's a MTOW limit of 2,400kg I found out recently.

None of the Pelita BO-105s I've seen in Indonesia use them

[aseanaero]

I bought 5 BO-105 CBs to part out and I got some AEG-Telefunken rescue hoists in the package PN V22.894 , they are new surplus but 20 years old , I can't find any reference to them anywhere.

Apparently most operators are using a Breeze Eastern style hoist which is about 80kg compared to the AEG at 180kg



Anyone know of operators using the AEG-Telefunken hoist ?

We totally stripped out 1 BO-105 last week and was surprised that the fuel cells were 1981 and still in good shape.

I was very impressed with the build quality of the helicopter , it's a really well designed and put together heli.

The other surprise was a lot of components are 'on condition' and not hard timed or worse calendar timed (a Euro / British favorite) which is unusual for a European heli

[EMS R22]

Mihail , Oceania Aviation in NZ have 105's for sale.

Oceania-Aviation | Home

[bolkow]

Irish Helicopters have a bolkow for sale, not the stretch type with 15550 hours on oit and another permanently withdrawn from use which is a stretched one with around the 10000 hours mark on it? Might be worth asking.

[Mihail]

thank. will ask

[Shell Management]

High time Bolkows need a lot of sheet metal attention.

[Dynamic Component]

BO105 Airframe cracking?

Does anyone know if the BO105 CBS-4/5 airframe has problems with the airframes cracking on high time (10000+ Hrs) machines ?

Thanks in advance
DC

[Spunk]

cracks

I remember that we once found cracks at the tailboom. Can't remember exactly where it was.

[bolkow]

I do recall that some years ago on the original bolkows there was a tail flaexing issue, that resulted in an uncoupling of the tail drive shaft, these incidents occurred around 6000 airframe hours, and resulted in the splashdown of G-AZOM 5 miles off skegness during one year. I believe modifications were made to stiffen the tail boom at the point it joined the rest of the helicopters main body. Other than that I am not aware of anything else, some bolkows are well over 20000 hours currently.

[Saint Jack]

BO105 Airframe Cracking?

Dynamic Component: Whenever you have this kind of query it is generally a very useful first step to look throught the SB's and AD's issued against the specific type for any structural issues that may answer your question. Also, check the scheduled maintenance requirements in the MM for any structural inspections. if all else fails, call ECD product support and explain what your after. Do you know anyone at another BO105 operator you could ask?

[Dynamic Component]

Hi SJ,
I don't know anyone else with a BO105 and I don't have access to the Ad's,SB's or MM. We are looking at purchasing a 105 and I am worried about cracking on airframes with a lot of hours(10 000+) on them.

Thanks Bolkov and Spunk.

Cheers
DC

[Shell Management]

A typical sheet metal aircraft. Cracking in the rear fuselage is fairly common. Try talking to Bond Air Services at Goucester or PHI in Lafayette.

[dieseldo]

Severe cracking of the 105 fuselage would occur anytime after 5000 hours.

The worst area was the structure around the aft righthand A frame leg.
The first one I saw had a 4 inch crack within the right hand main box frame only visible through the lightening holes.

When the structure was removed around the airframe mounted bracket it came out in pieces, cracked to bits.

I saw one aircraft at rotortech so badly cracked they had to remove all the structure above floor level!!!!!!!!

The tailboom used to crack mid tailboom on the right hand side. Usually you will find a large patch there about 3 feet long and a foot high.
This crack was caused by skin flexing and would appear central in an area of skin. Not serious.

One of the drivers behind Bond using new fuselages on it's 105's was the ongoing cracking problems. It gave them the option of stretching the aircraft at the same time.

It was generally felt that the german spec aluminium was part of the problem. It was annodised and had great anti corrosion properties.
Aircraft that operated offshore for years had very little corosion.
However it was felt that the material would age harden and crack sooner than expected.
Couple this to a main transmission bolted rigidly to the aircraft with no vibration damping and it was a recipe for cracks.

Great aircraft one of my favourites.

Get a survey done by someone who really knows the aircraft before you part with any money. Cavaet Emptor!!!!!!!

[Dynamic Component]

Thanks for the info so far.

DC

[helops]

For how long will Bo-105 continue to fly? (in the world)

Thank you

[Daddylynx]

How Long will Bo 105 fly (in the world)

Not sure about the world but we will be flying them in Sarawak (Malaysia) until the end of this year - and probably much longer!