Service difficulty report · Fitting · Boeing 7377H4

Difficulty date
January 25, 2023
Submitted
March 6, 2023
Operation
Air carrier
Aircraft
N955WN
Make and model
Boeing 7377H4
Aircraft serial
36671
Aircraft time
38,739 hours, 23,607 cycles
Part
Fitting
Condition
Corroded
Location
Zn 200 Fus Top
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

CORROSION ON FWD PASSENGER CABIN FITTING AT LBL 59 BS 344+1.<[01] REMOVED CORROSION IN A 1'X1'X.014' AREA ON FORWARD ENTRY DOOR AFT GIRT BAR FITTING BS 344+1. SRM DOES NOT HAVE DAMAGE REMOVAL LIMITS FOR GIRT BAR FITTINGS; FITTING TO BE REPLACED IAW SRM 51-10-02-0G-0 STEP 9C. REPLACEMENT OF PART.;[02] MEASUREMENTS TAKEN WITH ATS 2677; S/N UNKNOWN; DUE 11/2023;[03] CERTIFY ACTIONS 1;2;[04] VERIFIED CORRECTIVE ACTION #1;[05] UPDATED MEASUREMENT TABLE;[06] REMOVED AND INSTALLED NEW GIRT BAR FITTING AT FED AFT SIDE BS 344 USING STANDARD TORQUE SETTINGS IAW SRM 51-40-04-0G-0 FIG 1 SHT 3. ATS 1363; S/N 0614803629; DUE 05/2023;[07] VERIFIED CORRECTIVE ACTION 6;[08] ADDING OUT OF LIMITS TO CLARIFY STEP 1;[09] CERTIFY;[10] UPDATED CORROSION LEVEL;[11] VERIFIED UPDATED MEASUREMENTS TABLE.

More about the Boeing 737-7H4