Notes on clearing and treating aircraft surfaces

Notes on clearing and treating aircraft surfaces

Process check on protective treatments to D.T.D.902"A", "B" & "BE" Shops. Includes details for Hampden and Lancaster components, aileron structures and remarks. Two versions of same item.

1943-03-23

Two page handwritten document

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SNolanJF150621v10003, SNolanJF150621v10025

[Underlined] Process Check on Protective Treatments to D.T.D. 902 ”A” “B” & “BE” Shops [/underlined]

[Underlined] Hampden Details [/underlined]
All new details and assemblies are cleaned with turps. substitute. Those repaired or salvaged are also cleaned, only being stripped where necessary. They are then given one coat of S.O.B.A.C. Aluminium P.O.V. to D.T.D. 260 “A”, and are well spaced for drying. Racks are available for the smaller details.

[Underlined] Lancaster Details [/underlined]
Are all cleaned with turps: and given one coat of either Black or Green P.O.V. to D.T.D. 314 according to its position on the aircraft.

[Underlined] Hampden C/S Camouflage. [/underlined]
These are not stripped, but cleaned down with turps: new panels are given a coat of primer (U.P.7.) and the whole sprayed with one coat of “Sea Grey” P.O.V. (D.T.D. 314) on the top surfaces, and one coat of “Black” P.O.V. (D.T.D. 314) on the bottom surfaces. A certain number, which are to be finished white enamel on the underside, are completely stripped and given a coat of Universal Primer (U.P.7.). The finishing coat of white enamel is not now put on at these works. All markings are put on to approved drawings.

[Underlined] Lancaster Components [/underlined]
Are cleaned down with turps and sprayed “Dark Earth” / P.T.O.

[Page break]

camouflage (D.T.D. 314) on upper surfaces, and Matt Black (D.T.D. 314) on the underside. Colour boundaries and markings are all carried out to A.V. Roe’s approved drawings.

[Underlined] Aileron Structures [/underlined]
Are stripped and given a coat of dope resisting paint to B.S.S. 3.X.4. before fabric covering.

[Underlined] Remarks [/underlined]
There appears to be a big contrast between different drums of the Black P.O.V. to D.T.D. 314. Certain drums of this paint, which should have a matt finish, are drying quite glossy. Enquiries are being made to ascertain why this is so. The following Batch No’s were taken from drums of paint in use and traced back to their Release Notes:-

Black P.O.V. to D.T.D. 314. Batch No. 1733. Release Note LR/17467
Alum: P.O.V. to D.T.D. 260 “A”. Batch No 1157. Release Note LR/17057
Dark Earth to D.T.D. 314. Batch No 1078. Release Note LR/16243
Green Camouflage to D.T.D. 308. Batch No 1153. Release Note LR/2305 /B.

A good standard of workmanship is being maintained generaly [sic], and components examined were found to have a good even finish and to be free from flaking.
Process as viewed is considered satisfactory.

J.F. Nolan
[deleted] 16 [/deleted] [inserted]23[/inserted]/3/43.

[document duplicated]