Service difficulty report · Panel · Boeing 7377H4

Difficulty date
April 22, 2022
Submitted
May 9, 2022
Operation
Air carrier
Aircraft
N927WN
Make and model
Boeing 7377H4
Aircraft serial
36889
Aircraft time
45,530 hours, 27,478 cycles
Part
Panel
Part number
661BB
Condition
Pulled
Location
Rh Wing
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

RIGHT WING T/E PANEL 661BB HAS SEVERAL PULLED FASTENER HOLES (MARKED) / REMOVED DAMAGED AND CONTAMINATED FIBERGLASS PLIES FROM DAMAGED FASTENER HOLES ALONG T/E OF PANEL 561BB AND CLEANED REPAIR AREAS. WORK ACCOMPLISHED IAW SRM 51-70-04-2R-9 PAR 4.A-C.FILLED DAMAGED FASTENER HOLES WITH RESIN BMS 8-301; CLASS 1; EA 9390; LOT# JH1GAA7833 AND CHOPPED FIBERS; LOT# 1437038-1 AND SET TO CURE. WORK ACCOMPLISHED IAW SRM 51-70-04-2R-9 PAR 4.D-F. CURED FASTENER HOLE RESIN SLURRY IAW SRM 51-70-04-2R-9 PAR 4.F; SANDED SLURRY FLUSH TO OUTER SURFACE AND CLEANED PER SRM 51-70-04-2R-9 PAR.4 STEPS G-I.;FABRICATE REPAIR PLIES FROM BMS9-3 STYLE 1581 LOT NUMBER 1475360-2; INSTALLED PLIES WITH BMS8-301 CLASS 1 LOT NUMBER JH1GAA7833; VACUUMBAGGED PLIES; SET PLIES TO CURE AND CURED PLIES USING THERMOMETER ID:ATS2209 S/N: 43300739WS; UNBAGGED PLIES AND LIGHTLY SANDED; WORK PERFORMED IAW SRM 51-70-04-2R-9 PARAGRAPH 4.J-M AND P. PERFORM POST CURE NDI IAW SRM 51-70-04-2R-9 PARAGRAPH 4.O.;POST REPAIR UT INSPECTED PER 737NDT PART 4 51-00-02. NO DEFECTS FOUND. TOOL ATS2342 CAL DUE 05/2022.;[13] DRILLED ALL FASTENER HOLES; SEALED REPAIR ON INNER SURFACE WITH EC-3501 B/A EPOXY SEALANT LOT# 1183B1111W; CURED AT ROOM TEMP; SANDED FLUSH TO INNER SURFACE AND CLEANED PER SRM 51-70-04-2R-9 PAR.4 STEP N AND SRM 51-70-04-2R-0 PAR.4P(2)(B).;[14] COUNTERSUNK FASTENER HOLES AND REFINISHED PANEL IAW SRM 51-70-04-2R-9 PARAGRAPH 4.N AND P

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