Service difficulty report · Intercostal · Boeing 7377H4

Difficulty date
August 24, 2022
Submitted
September 26, 2022
Operation
Air carrier
Aircraft
N496WN
Make and model
Boeing 7377H4
Aircraft serial
32478
Aircraft time
59,797 hours, 35,569 cycles
Part
Intercostal
Condition
Corroded
Location
Fuselage
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

FWD WET AREA INTERCOSTAL BETWEEN STA 294.5 TO STA 312 LBL 11 HAS CORROSION / [01] CLEANED CORROSION AS PER B737-700 SRM 51-10-02-0G-0;[02] VOID STEP 1.;[03] LOSE CABLE FROM THE ELEVATOR ( EA / SECTION) TO FACILITATE SHEET METAL WORK AS PER B737-700 AMM 20-10-91-000-801.;[04] FOUND EXFOLIATED CORROSION AND IS OUT OF LIMITS AS PER B737-700 SRM 53-00-04-1A-1. REMOVED INTER COSTAL AS PER B 737-700 SRM 51-40-02-0G;[05] VERIFIED STEP 3 AND 4;[06] LOCATED AND DRILLED NEW INTERCOSTAL AS PER B737-700 SRM 51-40-05-0G-0;[07] VERIFIED STEP 6;[08] OK TO TREAT AND PRIME.;[09] TREATED AND PRIMED AS PER B737-700 AMM 51-21-72-370-801;[10] VERIFIED STEP 9.;[11] OK TO INSTALL NEW INTERCOSTAL.;[12] (CORECTION TO STEPS 5 AND 7)<BR>(RII) VERIFIED STEPS 3; 4 AND 6.;[13] PARTIALLY INSTALLED NEW INTERCOSTAL AS PER B737-700 SRM 51-40-02-0G-0;[14] INSTALLED INTRCOSTAL BETWEEN STA 294.5 TO STA 312 AND LBL 11 AS PER B737-7 SRM 51-40-02-0G-0;[15] VERIFIED STEP 14;[16] REF STEP 3 ADJUSTED CABLE FROM THE ELEVATOR ( EA / SECTION) WORK ACCOMPLISHED ON TTG8Q0038ZYV;[17] VERIFIED 16

More about the Boeing 737-7H4