Service difficulty report · None · Boeing 737*

Difficulty date
February 12, 2022
Submitted
March 21, 2022
Operation
Air carrier
Aircraft
N460WN
Make and model
Boeing 737*
Aircraft serial
32464
Aircraft time
58,773 hours, 34,967 cycles
Part
None
Condition
Corroded
Location
Aft Fuselage
Stage of operation
UK
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

R2 DOOR LOWER SILL INNER CHORD CREASE BEAM HAS CORROSION FROM STA 951 TO 992.8 (MKD 107-001) / [01] FOUND EXFOLIATED CORROSION ON R2 DOOR INNER CHORD FROM STA. 951 TO STA. 992.8; OUT OF LIMITS PER REF 737 SRM 53-70-15-1A-1;[02] VERIFIED STEP 1.;[03] REMOVED R2 INNER CHORD FROM STA 887+10 TO STA. 1006; PER REF 737 SRM 51-40-02-0G-0;[04] VERIFIED STEP 3;[05] LOCATED AND DRILLED NEW R2 DOOR INNER CHORD; PER REF. 737 SRM 51-40-05-0G-0;[06] VERIFIED STEP 5.;[07] OK TO TREAT AND PRIME AREA AND CHORD.;[08] TREATED AND PRIMER REF. 737 AMM 51-21-41-370-802 AND 51-21-72-370-804; AREA ON CHORD;[09] VERIFIED STEP 8.;[10] (RII) OK TO INSTALL INNER CHORD.;[11] MIXED SEALANT 0870CO80BM654SK; AT 19:00; ON 03/05/22; SQUEEZE OUT AND FASTENERS INSTALLATION VERIFICATION; DUE BY 03/09/22; AT 00:00;[12] VERIFIED STEP 11.;[13] INSTALLING R2 DOOR INNER CHORD 85% FASTENERS INSTALLED PER REF 737 SRM 51-40-02-0G-0;[14] INSTALLED R2 DOOR INNER CHORD FROM STA. 887+10 TO STA. 1006; PER REF 737 SRM 51-40-02-0G-0 AND DRAWING 147A8501 AND 147A8540;[15] VERIFIED STEPS 13 AND 14.;[16] INSTALLED R2 DOOR INNER CHORD FROM STA. 887+10 TO STA. 1006; PER REF 737 SRM 51-40-02-0G-0 AND DRAWING 147A8501 AND 147A8540;[17] VERIFIED STEP 16.