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TB20 MAINTENANCE MANUAL 51 标准施工/结构 TB20飞机维护手册(6)

时间:2011-11-10 10:49来源:蓝天飞行翻译 作者:航空
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- Cover the score with N* glass fabrics (TB 23-900) impregnated with resin (TB 08-926) or (TB 08-927) or (TB 08-932) after having sanded the covering area with sandpaper,
- Deburr and sand with sandpaper (TB 05-916).
Recouvrement en degrade Gradual covering
N*: From 1 to 4 depending on defect depth
WA
Validity : S / N 1 - 9999 51 30-02Page 204
(BA) SEP 04
 
B. Heat formed plastic elements (ABS - IMPAX 7000 - ALLAX SC)
Materials approved for repairs of elements made of IMPAX 7000 :
- Mixture : IMPAX powder + MEK (Methyl ethyl ketone) (TB 11-003), Reduce an IMPAX 7000 plate part (TB 24-900) to powder or spangle,
- Make this powder dissolve in mixture to obtain an unctuous paste. Materials approved for repairs of elements made of ABS :
Mixture : ABS powder + adhesive (TB 08-920) for heat formed plastic,
- Reduce an ABS plate part (TB 24-901) to powder or spangle,
- Make this powder dissolve in mixture to obtain an unctuous paste,
- Glass fabric (TB 23-900).
Materials approved for repairs of elements made of ALLAX SC :
- Mixture : ALLAX SC powder + MEK (Methyl ethyl ketone) (TB 11-003),
- Reduce an ALLAX SC plate part (TB 24-902) to powder or spangle,
- Make this powder dissolve in mixture to obtain an unctuous paste. NOTE : It is possible to use polyurethane sealants to seal cracks. Previously, make sure these sealants stick correctly on ALLAX SC.
1) Defect 1 : score (groove in surface, of variable depth and length)
- Chamfer the score,
I - Degrease with DIESTONE D (TB 11-912),
- Fill the score with the mixture,
- Allow to dry for 12 hours with ambient temperature,
I - Deburr and sand with sandpaper (TB 05-916).
Rayure Mélange de remplissage avant ragreage
Score Filling mixture before trimming
 

 
2) Defect 2 : crack and perforation
- Stop the crack by drilling both ends at dia. 1.5 mm (0.059")
- Make a chamfer - see sketch hereafter,
- Slightly sand the areas to glue with sandpaper,
I - Degrease with DIESTONE D (TB 11-912),
AAAA
Validity : S / N 1 - 9999 51-30 02Page 205
(BA) SEP 04
 
 - Cut fabric (TB 23-900) - see depending on the case hereafter,
- Coat with the mixture,
- Apply the fabrics impregnated with mixture,
- Allow to dry for 12 hours with ambient temperature,
I - Deburr and sand with sandpaper (TB 05-916).
 

 

14513002AAABVZ14100 

1st case : REPAIR ON BOTH FACES All thicknesses
 

 
AAAA
Validity : S / N 1 - 9999 51 30 02Page 206
(BA) SEP 04
 
2nd case : REPAIR ON ONE FACE
Thermoplastic plate, thickness 1 to 2 mm (0.039" to 0.079")
 
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