ATA 20

ATA 20 Standard Practices & material information

1 - Sealants, types and curing-times. UPDATED !

2 - All BMS- numbers with description.

3 - Technical terms to describe inspection-findings.

4 - List of P/N versus spec & description BMS/GREASE etc.

5 - Complete Aeroshell book available for reference only.

6 - Shell product specification sheets overview (fuel - oil - grease - hydraulics).

7 - BP Turbo Oil lubricants brochures (oil).

8 - Cross reference BMS- / MIL- spec to productname. Additions Welcome!!

9 - BINAIRY - HEXADECIMAL - DECIMAL - OCTAL converter.

10 - All info on PR 1776 Class B sealant.

11 - Oversize press fit type lube fittings.

12 - Dow Corning RTV adhesive / sealant product information sheet.

13 - Zip-Chem product cross reference overview.

3-Technical terms : (click on term to see picture if available)

Arced Battered Bent Binding Bowed Brinelled Broken Bulged Burned Burrs Carboned

Chafed

Checked

Chipped

Circuit

Grounded

Circuit Open

Circuit Shorted

Collapsed

Corroded

Cracked

Crossed

Curled

Dented

Deposits

Disintegrated

Distorted

Eccentric

Eroded

Flattened out

Frayed

Fused

Galled

Glazed

Gouged

Grooved

Hotspot

Indications

Melted

Mis-matched

Mis-aligned

Nicked

Peeled

Pickup

Pitted

Plugged

Porous

Rolled-over

Rough

Rubbed

Ruptured

Rust

Scored

Scratched

Seized

Sheared

Spalled

Streched

Stripped

Torn

Worn

excessively

Arced:

Visible effects (burn spots, fused metal) of an undesired electrical discharge between two electrical connections.

Blind: Cego: Restricted movement such as tightened or sticking condition resulting from high or low temperature, foreign object jammed in mechanism, etc.

Burrs: Rebarbas: A rough edge or a sharp projection on the edge or surface of the parent material.

Chafed:

Frictional wear damage usually caused by two parts rubbing together with limited motion.

Checked:Verificado por: Surface cracks usually caused by heat.

Chipped:

A breaking away of the edge corner or surface of the parent material usually caused by heavy impact (not flaking).

Circuit - Grounded: Circuito - Aterrado: Undesired current path to ground (common).

Circuit - Open: Circuito - Aberto: Incomplete electrical circuit due to separation at or between electrical connection points.

Circuit - Shorted: Circuit - Curto-circuito: Undesired current path between leads or circuits that normally are at a different potential.

Corroded:

Gradual destruction of the parent material by chemical action. Often evidenced by oxide build-up on the surface of the parent material.

Crossed:

Material damage to parts (as in the case of crossed threads) or part rendered inoperative (as in the case of crossed wires) as a result of improper assembly.

Eccentric:

Part(s) wherein the intended common center is displaced significantly.

Eroded:

Carry away of material by flow of fluids or gases, accelerated by heat or grit.

Flattened out:

Permanent deformation beyond tolerance limits usually caused by compression.

Frayed: