Service difficulty report · Attach Angle · Boeing 7377H4

Difficulty date
May 10, 2021
Submitted
June 17, 2021
Operation
Air carrier
Aircraft
N416WN
Make and model
Boeing 7377H4
Aircraft serial
32453
Aircraft time
65,393 hours, 38,534 cycles
Part
Attach Angle
Condition
Cracked
Location
Bs 663 Lbl 8
Stage of operation
IN
How discovered
9
Nature of condition
O
Precautionary procedure
K

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

What was found

LEFT AC BAY HAS CRACK AT UPPER VAPOR BARRIER ATTACH ANGLE STA 663 LBL 8 SEEN THRU AC BAY. 8-19 ; / APPLYED BMS 3-23 OR EQUIVALENT CORROSION INHIBITIN COMPOUND TO REPAIR AREA [COR- BAN 35 ] IAW B-737-700 SRM 51-20-01;ACCOMPLISHED FUEL LEAK CHECK ON REPAIR AREA STA663 UPPER ANGLE ; NO LEAK NOTED AT THIS TIME AS PER B737 AMM<BR>28-11-00-790-801.;ACCOMPLISHED CAP SEAL AT REPAIR FASTENERS ON HEAD AND TAIL TO PER B737-700 SRM 51-80-01-OG-0;ACCOMPLISHED ELECTRICAL BONDING TEST NORMAL. TOOL USED 168696;ACCOMPLISHED PERMANENT REPAIR OF LT VAPOR BARRIER ATTACH ANGLE AT WING CENTER SECTION REAR SPAR STA 663 PER REF B737 SRM 57-10-10-2R-5;COMPLETED INSTALLATION OF REPAIR PARTS ( REPAIR ANGLE[1]; REPAIR SPLICE[2] ) AT BS 663; REAR SPAR VAPOR BARRIER; FROM LBL 6 TO LBL 14 APROX. PER B737-700 SRM 57-10-10-2R-5 REPAIR 5 FIG 202 AND SRM 51-40-02-OG-0;DAMAGE SECTION OF ANGLE REMOVED ON STEP 3 WAS REMOVED FROM APPROX. LBL6 TO LBL14 PER REF B737 SRM 57-10-10-2R-5 FIG 202.;FABRICATED REPAIR ANGLE PART(1) MATERIAL USED 2024-T3 CLAD 0.063' AS PER REF B737-700 SRM 57-10-10 2R-5 TABLE 201. PO#1705677;FABRICATED SPLICE ANGLE PART(2) MATERIAL USED 2024-T3 CLAD 0.071' AS PER REF B737-700 SRM 57-10-10 2R-5 TABLE 201 PO#1707253;INSTALLED EWIS PROTECTION ON REPAIR AREA AT LT AC PACK BAY STA 663 PER REF B737 AMM 20-60-07-913-801;LOCATED AND DRILLED REPAIR PARTS AS PER REF B737-700 SRM 51-40-05-0G-0.. (ANGLE AND SPLICE ANGLE);MIXED BMS 5-95 SEALANT AT 05:55; 05/19/2021.

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