Klick here for a brochure on the N905BB (ed. 7/2009 Don Black)

I have owned two Bo 208 Junior and a Bo209 Monsun which I flew for 30+years. These fotos are of werk nr 546 which I have restored and recreated BB905, one of the "Biafra Babies". Research of Biafran history took several years in order to permit a precise re-creation of the BB905 project. The fotos were taken at my home on the Buckingham Army Air Field, a historic airport, near Fort Myers, Florida. The motor is the new TMX Continental IO-240 B2 fuel injected 125 hp and carries a custom Sensenich propeller. Flight testing will begin shortly, following completion of the documents required by our FAA. I plan to display the Junior at several airshows and fly-ins. If you would like more information, I will be happy to provide it. Donald D Black N905BB Buckingham Army Air Field

A Summary of Modifications to Bolkow Junior ( Bo208)

werk nr. 546, reg no. N905BB




a)     OriginalContinental O-200 removed and replaced with a new Continental TMX series IO-240B installed on OE engine mounts, with no modifications to cowling or structural components.

2. Propeller;

a)     New Sensenich wood propeller Model W69EK7

installed. Certification by TCDS P00001NY

b.) ARP502a crank flange on above engine has

†††† insufficient surface area for wood props, re-

†††† quiring the use of a Saber (DA-20) hub adapter.

3. Fuselage;

a.) Addition of battery access door in left side of

†††††††††††††††††† †††† fuselage as used on 208C model. See Dwg #

†††††††††††††††††† †††† 208-21843.xx

†††††††††††††††††† b.) Removal of ďAĒ model 80 liter fuel tank.Replaced

†††††††† ††††† with100 liter tankDwgs # 208-69113.xx

†††††††††††††††††† ††††† including new straps and fuel level sensor.No

†††††††††††††††††† ††††† structural changes were required.

c.)Fabrication and installation of flight instrument

†††††† panel as used on 208C model, including fuselage

†††††† mounted vacuum venturi.According to Dwgs #

†††††† 208-7123.xx


†† a.)Replaced original wing tips with larger optional

tips PN 208-11151 and 208-11152 to increase wing area to 100 sq.ft.ref parts catalogs.


†††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††† 2/2




5. Electrical;

a.) Installation of new FWF harness to accommodate

new IO-240 engine and its required sensors. ref†††† schematics

b.) Installation of new Walbro electric fuel pump for

††††† priming function.Ref sketches

c.) Installation ofelectric engine instruments

††††† required by new engine.

d.) All switches, circuit breakers, warning lights, and

††††† connectors replaced with new items.

6. General;

The following publications have been revised to reflect the details of the modifications above.

a.)               Flight Manual

b.)††† Operatorís Manual††† †††††

c.)              Equipment List

d.)              Airframe logbook

e.)               Maintenance Manual




*Parts Catalogs Bolkow 208A and 208C models

*Flight Manualsfor above

*Operators Manualfor above

*TCM Installation Manual

*TCM Operation & Maintenance Manual