RFP-Attachment7 PaintRemovalGEN1308191.pdf

U.S. COAST GUARD

ARSCES

AIRCRAFT REPAIR SUPPLY CENTER

ELIZABETH CITY, NC 27909

13081

ARSCES 13081.9 Page 1 of 2

ARSC ENGINEERING SPECIFICATION 13081.9 18 Jan 96

Subj: USCG Aircraft Paint Removal Processes For Various NDI Techniques

1. PURPOSE.

The USCG conducts a variety of non destructive tests (NDI) on aeronautical components and structures. Historically, plastic media blasting (PMB) has been used to remove paint from surfaces before NDI is performed. The problem is that PMB has a tendency to hide or seal latent defects from some NDI tests. The intent of this instruction is to define the prop-er stripping process required for various NDI Techniques applied on each USCG aircraft.

2. CANCELLATION.

None.

3. REFERENCE DOCUMENTS.

a. NAVAIR 01–1A–509, Aircraft Weapons Systems Cleaning and Corrosion Control

b. NAVAIR 01–1A–16, NDI Inspection Methods

c. AFTO 33B–1–1,NDI Inspection Methods and Applicable ACMS Cards

d. AFTO 33B2–7–11,Flaw Detector, Eddy Current and Applicable ACMS Cards

4. APPLICATION.

All USCG Rotary and Fixed Wing Aircraft.

5. GENERAL INFORMATION.

All NDI tests should be conducted in accordance with applicable references (a) through (d). Paint removal instructions should be adhered to in accordance with this specification.

6. ACTION REQUIRED.

NDI TECHNIQUES PAINT REMOVAL

PROCESS

NOTES

X–RAY N/A 4

EDDY CURRENT N/A 4

ULTRASONIC N/A 4

DYE PENETRANT:

Aluminum Chemical 1,4

Magnesium Chemical 2,4

Steel Chemical 3,4

Titanium Chemical 2,4

U.S. COAST GUARD

ARSCES

AIRCRAFT REPAIR SUPPLY CENTER

ELIZABETH CITY, NC 27909

13081

ARSCES 13081.9 Page 2 of 2

MAGNETIC PARTICLE:

Steel Chemical 3,4,5

NOTES:

1. PMB may be used on areas which are not to be inspected.

2. PMB should never be used on Magnesium or Titanium.

3. PMB may be acceptacle in certain cases where the steel is of high hardness. ARSC Engineering should review processes on a case–by–case basis.

4. Applicable to all USCG Rotary and Fixed Wing Aircraft.

5. Mag Particle Inspection process is only applicable to steel alloys

7. SUPPLY DATA.

Consumables available in normal supply.

8. LABOR–HOURS REQUIRED.

Varies depending on aircraft type and processes utilized.

9. EFFECT ON WEIGHT AND BALANCE.

None.

C. J. SNYDER

By direction