Übersichtsliste der Änderungs-Anweisungen Bf 109

[Andreas Brekken]

Hi, Mikael!

You can consider your hypothesis as a valid one. These cards or documents were called "Lebenslaufakten".

A very well known list in the National Archives were drawn from a large collection of such documents located in one of the Erla repair facilities when overrun by the allies. As far as we know the originals were destroyed, the transcripts survived.

Where did they all go? No idea! They were to be kept with the airframe, I suppose by the technical staff of a unit in the field, sent with the airframe consignment documents to for example a repair facility.

Maybe some will pop up as a result of this discussion?

Regards,
Andreas B

[komet]

Quite an interesting document endeed, but I should have a question.
First af all I don't speak german so I could be wrong, but what about the tail stiffeners list?
The famous Siegfried Schnell 's Bf 109 F-2 (W.Nr. 9553) is not in the list even if so fitted. Maybe the document shows only the planes upgraded after completion?

All the best.

Riccardo

[yogybär]

One thing which I cannot find in these Änderungs-Anweisungen is the upgrading of 109F-2's central cannon from MG151/15 to MG151/20.

Does anyone have documentation on this retrofit?

[Kari Lumppio]

Hello!

The documents originate from Finnish archive. My guess is that the list includes only those which were thought to be relevant for G-2 and G-6 and all general ones. The two subtypes were used by Finnish AF. In any case the collection is incomplete what come to pages (Blatt) yet is all what was sent to Finland.


Cheers,
Kari

[Kurfürst]

Originally Posted by yogybär

One thing which I cannot find in these Änderungs-Anweisungen is the upgrading of 109F-2's central cannon from MG151/15 to MG151/20.

Does anyone have documentation on this retrofit?

I don't think it was an official retrofit, but it was certainly possible mechanically, given the close similiarity of the guns, but perhaps only at individual level..?

From interrogation of a Hauptmann (Gruppenkommandeaur of I/JG 26) brought down on 10 July 1941:

[Matti Salonen]

Gentlemen,

There is nothing strange in this list. I found it already 35 years ago from the Finnish Military Archive and read the first two pages (Erläuterungen) to understand, how it is supposed to work.
This bunch of pages, which was mailed to the Finnish Air Force is simply a revision dated 1.7.1943 and contains pages 41-42, which have to be changed in the original list and pages 61-71, which have to be added to the original list. Next revision should have been published 1.10.1943 (four revisions per year).
Therefore, to get a complete picture of Bf 109 modifications, one has to have also all other pages, i.e.1-40, 43-60 and all pages published after page 71. I am sure, that also a few later revisions have been sent to the Finnish Air Force, but unfortunately they have not been saved in archives.
I strongly suggest that people, who live near big archives (NARA, IWM, Deutsches Museum etc) try to find out the complete list (also similar of other aircraft types). I tried to do that 35 years ago, but then it was impossible from Finland, when snail mail was the fastest way of communication (I had a telex equipment available, but all the archives had not). I believe, that the last revision status should be 1.1.1945 or at least 1.10.1944.
Also I hope, that somebody, who is fluent both in German and English, would translate the first two pages to be added to Andreas's site.

Best regards,

Matti

[yogybär]

Originally Posted by Matti Salonen

Also I hope, that somebody, who is fluent both in German and English, would translate the first two pages to be added to Andreas's site.

I'd be happy to contribute this. Please send me a PM, if it is really wanted.

[Joao Cabaco]

Thanks Andreas, to my Bf109 database

Joao Cabaco