Service difficulty report · Support Angle · Boeing 7377L9

Difficulty date
November 23, 2021
Submitted
January 10, 2022
Operation
Air carrier
Aircraft
N7817J
Make and model
Boeing 7377L9
Aircraft serial
28013
Aircraft time
55,382 hours, 27,558 cycles
Part
Support Angle
Condition
Corroded
Location
Bs 360 Bl0
Stage of operation
NR
How discovered
9
Nature of condition
O
Precautionary procedure
O

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

CORROSION ON SUPPORT CLIP AT MAIN EBAY BL0 BS360. MARKED. ; / [01] REMOVED CORROSION IN AN AREA OF 1.7'X1' PER SRM 51-10-02-0G-0; [02] VERIFIED ITEM 1 CORRECTIVE ACTIONS.; [03] UT INSPECTED DENT/BLEND IAW 737 NDTM PART 4 51-00-00 PROCEDURE 2; REMAINING THICKNESS IS 0.040.<BR>EQUIP ID#: ATS2031 S/N: 170515011; [04] GRID AREA NEEDED FOR ENGINEERING; [05] REMOVED SUPPORT CLIP AT MAIN EBAY BS 360 BL0 PER SRM 51-40-02-0G-0; [06] AFTER REMOVAL; FOUND ADDITIONAL CORROSION ON SUPPORT CLIP IN AN AREA OF 2'X1.7'; REMAINING THICKNESS IS 0.030' ORIGINAL THICKNESS IS 0.040'. FOUND TO BE OUT OF LIMITS DUE TO NO LIMITS ARE GIVEN IN THE SRM. USING ATS TOOL MICROMETER ID: ATS601 SN: 87172291; [07] VERIFIED OUT OF LIMITS DUE TO NO LIMITS IN THE SRM.; [08] RECEIVED FROM OSS NEW SUPPORT CLIP; MATERIAL USED 7075 T62TO CLAD .040' LOT# 1468510-2 PO# 847253-SWA. LOCATED AND DRILLED NEW CLIP PER SRM 51-40-05-0G-0 AND DWG 141A1160; [09] VERIFIED CORRECTIVE ACTION 8.<BR>OK TO ALODINE AND PRIME; [10] APPLIED CHEMICAL CONVERSION COATING AND PRIMER ON CLIP PER AMM 51-21-41-370-802 AND AMM 51-21-72-370-804. OK TO INSTALL; [11] VERIFIED CORRECTIVE ACTION 10.<BR>OK TO INSTALL; [12] UPDATED MEASUREMEMNT TABLE; [13] INSTALLED SUPPORT CLIB AT MAIN E&E BAY BS 360 BL0 PER SRM 51-40-02-0G-0 AND DWG 141A1160; [14] VERIFIED CORRECTIVE ACTION 13; [15] VERIFIED JOB COMPLETE

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