Modifications List

Table  1               LAA Mandatory Modifications               Rev 15 Mar 2012

 

MOD REF NO

DESCRIPTION

COMMENTS

47-001

Detachable wing panels and fittings with aileron auto-connect

Supplied with the UK plans package.

The inclusion of the aileron auto-connect system is optional

47-002-1

Beam spars and wing assembly detail

Supplied with the UK plans package

47-002-2

Transportation fittings

Supplied with UK plans package.

The outboard fittings are optional if builders do not intend to stow the wings in this configuration.

The inboard fittings ARE required to carry the front jury strut – see Mod 47-006

47-003

Cub style undercarriage for 1966 fuselage

Supplied with UK plans package

 

47-004-1

Continental engine mount: Centre section struts: Lift struts and fittings

Supplied with UK plans package

47-004-2

Upper motor mount compression strut

Supplied with UK plans package

47-005

Lift strut attachment plate extended 0.5 ins to 4-13/16 ins from 10 swg S510 steel

See Mod 10233 – Table 2

47-006

Jury struts to front lift struts

See PFA letter dtd 13 August 1998

47-008-1

Passenger harness attachment

SEE MOD 11452 TABLE 2

47-008-2

Pilot lap strap attachment

See PFA letter & drgs 8 April 1998

47-008-3

Pilot shoulder harness attachment

See PFA letter & drgs 8 April 1998

47-008-4

Cabane roll wires specified as 1/8 “ diameter

See PFA letter 8 April 1998

47-008-5

Deletion of joggles on carry-through straps

See PFA letter 8 April 1998

Notes on Wills drawings

Tail bracing wires to be 3/32 “ 7x17 stranded cable

 

Notes on Wills drawings

Aileron hinges from MS20001P6 piano hinge

 

Notes on Wills drawings

Equivalent UK spec materials and gauges to be used for all steel fittings

 

10170

Fitment of bobbins to strengthen lift strut attachment plates when strut attachment plates are extended by 1” in 12 swg material

Only applicable if the lift strut attachment plates are extended by 1 “  in 12 swg. See PFA letters 13 August 1998 and 8 January 1999

 


 

Table 2           Prototype Modifications          Rev 15 Mar 2012

 

 

Mod No:

Description

Comment

 

10233

Lift strut attachment plates extended by 0.5 ins in 10 swg to give greater clearance at attachment point

See 47-005

 

10352

Centre section trailing edge cut-out, baggage compartment and access hatch

Rounded cut out

Approved by PFA 18 May 1999. ( Peter Hill )

 

10353

Installation of tail wheel steering horns and strengthening of lower area of rudder

Approved by PFA 8 June 1999. See also Mod 10495

 

10495

Surface mounted rudder and elevator horns

Mandatory if Mod 10353 fitted

 

10531

Control column assembly – modified aileron crank manufactured from flat plate

Approved by PFA 12 Oct 2000 ( Peter Hill )

 

10595

Double pulley assembly under rear seat for elevator cables. Single pulleys at sides of rear seat for rudder cables

 

 

11002

Centre section cut out & baggage compartment

Angular cut-out ( Steve Bryan)

 

11452

Passenger seat harness lap strap attachment

To supersede PFA/047/MOD. 1 Sheet 1( PART ) dtd 8 April 1998. To be used in conjunction with Mod 47-008-1. See also PFA letter dtd 8 April 1998

 

11453

Centre section cut out for pilot access

Hinged flap alternative to 10352 or 11002

 

12654

Large main undercarriage wheels

 

 

12655

Leaf type tail spring & steerable tail wheel

 

 

12706

Rudder pedals for pilot to replace rudder bar

 

 

13052

Jury strut attachment to rear lift strut

 

 

13061

Undercarriage safety cables

 

 

10994

Circular centre section cut out

( Ian McLeod )

 

10995

Modified elevator actuating system to eliminate cable fouls

 

Applicable to metal fuselage only ( Ian McLeod )


Table 3               Engineering Concessions     Rev 15 Mar 2012

 

These concessions may be applied without reference to LAA Engineering but must be in this section of the Declaration of Design documents

 

Concession No

                                Description

0451

Modification to No 2 rib truss to avoid cable foul

0348

Innermost wing rib re-positioned 0.5 ins outboard to avoid attachment plates bolt foul

0356

     Lengthened brackets for wing drag brace cables.        Applies to all three types of fitting

 

 

Table 4                   Alternative Engine Installations Available

                                    for both wood and metal fuselage types

 

LYCOMIMG 0-235 – L2C WITH STRAIGHT MOUNT POINTS

 

LYCOMING 0-235 L2C WITH DYNAFOCAL MOUNT

 

CORVAIR AUTO MOTIVE – WILLIAM WYNN CONVERSION

 

ROTAX 912 ULS

 

DRAWING SETS & LAA MOD NOS AVAILABLE ON REQUEST

FOR  A SMALL DONATION TO CLUB FUNDS


Link to Modification drawings available to all Club Technical Members