Service difficulty report · Stub Frame · Boeing 7377H4

Difficulty date
June 22, 2022
Submitted
July 28, 2022
Operation
Air carrier
Aircraft
N485WN
Make and model
Boeing 7377H4
Aircraft serial
32473
Aircraft time
60,155 hours, 35,804 cycles
Part
Stub Frame
Part number
141A8370U13
Condition
Cracked
Location
R1 Door
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

R-1 DOOR FWD FRAME UPPER STUB FRAME HAS A CRACK / [01] PLACED EWIS PROTECTION AROUND R-1 DOOR AREA PER B737-700 AMM 20-60-07-913-801.;[02] VARIFIED STEP 1;[03] APPLIED PAINT STRIPING TO OUTER FUSELAGE SKIN AT R-1 DOOR FWD FRAME PER B737-700 AMM 51-21-11-150-801. AGUSTIN SUVERO 29798.;[04] VERIFIED 3;[05] PARTIALLY REMOVED FASTENERS ON R-1 DOOR FWD FRAME UPPER STUB FRAME PER B737-700 SRM 51-40-02-0G-0. AGUSTIN SUVERO 29798.;[06] REMOVED LOWER RAIN GUTTER AND R-1 DOOR FWD FRAME UPPER STUB FRAME AS PER B737-700 SRM 51-40-02-0G-0.;[07] LOCATED AND DRILLED NEW UPPER STUB FRAME FOR R-1 DOOR PER B737-700 SRM 51-40-05-0G-0. AGUSTIN SUVERO 29798.;[08] VERIFIED 7. OK TO TREAT AND PRIME OPEN NEW HOLES;[09] TREATED AND PRIMED PER AMM 51-00-58-201 AND AMM 51-21-72-370-804.;[10] VERIFIED; STEP # 9;[11] OK TO INSTALL NEW FRAME AT R-1 DOOR;[12] INSTALLED STUB FRAME AND RAIN GUTTER AT R-1 DOOR FWD FRAME REFERENCE DWG 141A8370 SRM 51-40-02-0G-0;[13] VERIFIED 12.;[14] CLEANED AREA AROUND R-1 DOOR WHERE IWIS IS APPLIED PER B737-700 SOPM 20-30-03.;[15] CLEANED EWIS PROTECTION PER B737-700 AMM 20-60-07-913-801.;[16] VERIFIED 14 & 15;[17] OK TO REMOVE EWIS PROTECTION;[18] REMOVED EWIS PROTECTION AROUND R-1 DOOR AREA PER B737-700 AMM 20-60-07-913-801.;[19] VERIFIED 18

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