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The following photos will provide visualreference to enable
accurate identifica-tion of material found on different
chipdetectors and oil filter patch.
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Photos Photo 1
Pratt & Whitney Canada Inc. SECTION 4 Photos51
Smallest division: 0.3937 in. x 0.3937 in. (1 mm x 1 mm)
Type: Allowable
Material: AMS4260
Source: Scavenge Pump
Where found: Reduction Gearbox Scavenge Oil Filter
Description: Hair-like Filaments
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Photos Photo 2
Pratt & Whitney Canada Inc.SECTION 4 Photos52
Smallest division: 0.3937 in. x 0.3937 in. (1 mm x 1 mm)
Type: Non-Allowable Category 1
Material: AMS6265
Source: Reduction Gearbox Gears
Where found: Reduction Gearbox Chip Detector
Description: Tooth Fragments
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Photos Photo 3
Pratt & Whitney Canada Inc. SECTION 4 Photos53
Smallest division: 0.3937 in. x 0.3937 in. (1 mm x 1 mm)
Type: Non-Allowable Category 1
Material: AMS6265
Source: Gears
Where found: Main Oil Tank Chip Detector
Description: Tooth Fragment
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Photos Photo 4
Pratt & Whitney Canada Inc.SECTION 4 Photos54
Smallest division: 0.3937 in. x 0.3937 in. (1 mm x 1 mm)
Type: Non-Allowable Category 1
Material: AMS6265
Source: Overspeed Governor Drive Gear
Where found: Reduction Gearbox Sump
Description: Gear Segment
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Photos Photo 5
Pratt & Whitney Canada Inc. SECTION 4 Photos55
Smallest division: 0.3937 in. x 0.3937 in. (1 mm x 1 mm)
Type: Non-Allowable Category 1
Material: AMS5504
Source: No. 9 Bearing Keywasher
Where found: Reduction Gearbox Chip Detector
Description: No. 9 Bearing Keywasher Fragment
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Photos Photo 6
Pratt & Whitney Canada Inc.SECTION 4 Photos56
Smallest division: 0.3937 in. x 0.3937 in. (1 mm x 1 mm)
Type: Non-Allowable Category 2
Material: AMS4260
Source: Scavenge Pump
Where found: Reduction Gearbox Scavenge Oil Filter
Description: Hair-like Filaments
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Photos Photo 7
Pratt & Whitney Canada Inc. SECTION 4 Photos57
Smallest division: 0.3937 in. x 0.3937 in. (1 mm x 1 mm)
Type: Non-Allowable Category 3
Material: AMS6444
Source: Accessory Bearings
Where found: Reduction Gearbox Chip Detector
Description: Clusters of Magnetic Flakes
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Photos Photo 8
Pratt & Whitney Canada Inc.SECTION 4 Photos58
Smallest division: 0.3937 in. x 0.3937 in. (1 mm x 1 mm)
Type: Non-Allowable Category 3
Material: AMS6265
Source: Reduction Gearbox Gears
Where found: Reduction Gearbox Chip Detector
Description: Metallic Curls
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Photos Photo 9
Pratt & Whitney Canada Inc. SECTION 4 Photos59
Smallest division: 0.3937 in. x 0.3937 in. (1 mm x 1 mm)
Type: Non-Allowable Category 3
Material: AMS5540
Source: No. 5 Bearing Abradable Seal (Plasma Coating)
Where found: Main Oil Tank Chip Detector
Description: Seal Fragments
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Photos Photo 10
Pratt & Whitney Canada Inc.SECTION 4 Photos60
Smallest division: 0.3937 in. x 0.3937 in. (1 mm x 1 mm)
Type: Non-Allowable Category 3
Material: M-50
Source: Bearing Material
Where found: No. 5 Bearing Chip Detector
Description: Shiny Rolled Flakes
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Photos Photo 11
Pratt & Whitney Canada Inc. SECTION 4 Photos61
Smallest division: 0.3937 in. x 0.3937 in. (1 mm x 1 mm)
Type: Non-Allowable Category 3
Material: AMS5504
Source: Keywasher
Where found: Main Oil Tank Chip Detector
Description: Keywasher Fragment
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Photos Photo 12
Pratt & Whitney Canada Inc.SECTION 4 Photos62
Smallest division: 0.3937 in. x 0.3937 in. (1 mm x 1 mm)
Type: Non-Allowable Category 3
Material: M-50
Source: Bearing Material
Description: Thin, shiny rolled flakes with feathered edges and
more than 0.020 in. (0.508 mm) in size are generatedwhen bearing
surfaces break down due to excessive load (spalling). The outer
surface of the flakes ishighly polished and may show parallel
impressions. The inner surface has a rough wavy or granular
tex-ture. After the bearing surface breaks down, the underlying
material disintegrates and chips with dark,coarse and irregular
shapes are produced.
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Photos Photo 13
Pratt & Whitney Canada Inc. SECTION 4 Photos63
Where found: Reduction Gearbox Scavenge Oil Filter
Description: Silica (Sand), Carbon Particles, Phenolic Resin
(Varnish)
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Photos Photo 14
Pratt & Whitney Canada Inc.SECTION 4 Photos64
Where found: Pressure Oil Filter
Description: Copper Flash, Silica (Sand), Carbon Particles and
Silicon Bead
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Photos Photo 15
Pratt & Whitney Canada Inc. SECTION 4 Photos65
Left Sample
Where found: Reduction Gearbox Scavenge Oil Filter
Description: Carbon Particles
Right sample
Where found: Pressure Oil Filter
Description: Silver Flash, Copper Flash and SilicaParticles
(Sand)
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Photos Photo 16
Pratt & Whitney Canada Inc.SECTION 4 Photos66
Where found: Pressure Oil Filter
Description: Silica (Sand) and Light Carbon Particles
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Photos Photo 17
Pratt & Whitney Canada Inc. SECTION 4 Photos67
Where found: Pressure Oil Filter
Description: Carbon and Silica (Sand) Particles
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Photos Photo 18
Pratt & Whitney Canada Inc.SECTION 4 Photos68
Where found: Reduction Gearbox Scavenge Oil Filter
Description: Heavy Carbon Particles, Gear Surface Material and
Silica (Sand) Particles
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Photos Photo 19
Pratt & Whitney Canada Inc. SECTION 4 Photos69
Where found: Reduction Gearbox Scavenge Oil Filter
Description: Heavy Carbon Particles, Silica (Sand) Particles,
Silicon Bead and little Shiny Metallic Debris (M-50)
