BHT-412-MM-2
5-00-00
Page 144 Rev. 23 15 DEC 2015
Export Classification C, ECCN EAR99
17. Inspect the aft crosstube (3, Figure 5-5) with the exception
of the areas under the abrasion strips (2 and 5) and upper
support (4) as follows:
All penetrant inspection materials utilized shall be
compatible, and shall meet requirements of SAE
AMS 2644. The use of visible dye systems is
prohibited.
BHT-ALL-SPM a. Use fluorescent penetrant inspection method per
ASTM E1417, Type 1 Method B, C, or D using a penetrant
sensitivity level of 2 or 3 (BHT-ALL-SPM, Chapter 6).
Chapter 32 b. Inspect crosstube for damage per limits specified in the
Chapter 32 to determine allowable damage and cleanup.
c. No cracks are permitted.
Chapter 32 d. Repair all damage in accordance with Chapter 32.
BHT-ALL-SPM 18. Apply epoxy primer coating (C-246) to areas where paint
has been removed for inspection as per the BHT-ALL-SPM.
DO NOT SAND CROSSTUBE IN A
CIRCUMFERENTIAL DIRECTION. SAND
CROSSTUBE IN A LONGITUDINAL DIRECTION
ONLY.
19. Taking care not to expose bare material, lightly abrade the
primer on the crosstube and abrasion strip where the clamp
assembly (1) is installed.
5-26. EACH 12 MONTHS OR 2500 LANDINGS OF AFT HIGH CROSSTUBE OPERATION (CONT)
DATA REFERENCE INSPECTION TASK DESCRIPTION
INITIAL
MECH OTHER
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