Info on BAC Strikemaster MK-89 1

[FranAle]

Hi to all:

I'm working on a repair in old jet acft, the BAC Strikmaster MK 89 international version.
After som research, SRM calls a drawing no longer available. Does anybody know the nomenclature DWG K-167-03-299? and if you have any clue how to step forward in order to retrieve more information. Google didn´t help to much. So far, I know BAC currently is out of the market and also was known as British Aerospace.
Any help or contact will be appreciated.

Regards,

FranAle

 

[KENAT]

Ever heard of BAE-Systems? Formally BAe or British Aerospace.

So, I'd try contacting them.

If they can't help anymore try contacting one of the other civilian operators and see if they have any inroads.

http://en.wikipedia.org/wiki/BAC_Strikemaster

mentions at least one civilian operator.

All strikemasters were international versions as the UK didn't operate it. They did operate the Jet Provost that it was based on. Mk 89 would make it Ecuador I believe.

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[FranAle]

Thanks Kenat:

By the way, you are right about BAe System, unfortunately knocking that door have not given the results I expect. The operator is requesting the support but the documentation they have about the repair, adresses to that dwg. I also checked the Civil Aviation Safety Authority regulations of the Australian Goverment, former operator of these birds but I got no luck. The problem is related with cracks by fatigue at the vertical fin spars.
I'll keep on track with this.
Thank you the hint.

Regards


FranAle

 

[rb1957]

surprised that the plane doesn't come with support services, but then maybe that's the way with military planes. i'd try to track down other operators of similar, RNZAF had some, but it sounds as though you're on the other side of the Tasman !

Personally, after trying to get the info, i'd resort to an equivalent strength "design". if you've got a fatigue problem you're repairing, be very carefull ... overly strong (and stiff) repairs can attract more load; but a sensible repair and a sensible inspection program ...

good luck !

 

[KENAT]

rb1957 - it's an old bird, original design dates back to a prop trainer in the 1950's. Also, sounds like not with the original operator.

You could try DESO or whatever superseded it in the UK ministry of Trade & Industry or something, but I wouldn't hold my breath. I'd definitely try and get in touch with some of the other civil operators, or at least the aviation authority of their country.

http://bac167.multiply.com/

http://www.everettaero.com/

http://www.raptoraviation.com/aircraft spec pages/Strikemaster.html

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[Andries]

Hi FranAle,

While this does not answer your question directly there is a very interesting accident investigation report downloadable from the Internet. It is Australian Transportation Safety Investigation Report: Aviation Occurrence Investigation Report 200605843 "In-Flight Break-up of BAC 167 Strikemaster"
There is the following paragraph in this report:

"Specific maintenance documentation for AKY was transferred with the aircraft from the previous military operators to the civil operator. Significant maintenance information pertaining to AKY, such as year of manufacture, special inspection requirements and previous repairs had not been identified by the civil operator and incorporated in the system of maintenance. The reason for that could not be determined; however it is likely that this was due to unfamiliarity with the military system of maintenance. In addition, there is no avenue for civil operators of retired military aircraft to obtain assistance from the military aircraft manufacturers in establishing a system of maintenance for the continued airworthiness of their particular aircraft.
There is also no avenue for civil operators of retired military aircraft to obtain advice and information from the previous military owner. In the case of AKY, that access was particularly important with respect to the previous cracking in the right wing upper attachment spar lug top surface and the resultant reduction in the inspection period while in service with the previous military operator.
That transfer of aircraft maintenance documentation, aircraft history and corporate knowledge is applicable to all aircraft that have been retired from previous military service. Accordingly, additional vigilance must be paid to ensure that ex-military aircraft are being maintained to ensure continued airworthiness".

You will have to be very careful regarding fatigue on this old aircraft. The mentioed accident was due to fatigue failure at wing attachments.

Regards

Andries

 

[FranAle]

Thanks Andries:

I'm aware about the info you provided. In this case, cracks are located in the aft spar of the vertical fin and they show a typical fatigue pattern. I think that a restore the original strenght process is the most affordable approach to this problem. Off course SRM and standard practices for this repair should be followed. Any different suggestion or guideline about how to proceed will be welcome.

Thank you again

 

[KENAT]

Dig around on

http://www.everettaero.com/

they seemed to have a bunch of vaguely relevant stuff. You might want to contact them. If they have relevant info for the Jet Provost you could probably read across.

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