Service difficulty report · Flange · Boeing 7377H4

Difficulty date
September 24, 2022
Submitted
November 9, 2022
Operation
Air carrier
Aircraft
N201LV
Make and model
Boeing 7377H4
Aircraft serial
29854
Aircraft time
59,586 hours, 35,374 cycles
Part
Flange
Condition
Corroded
Location
Zn 100 Fus Lower
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 STA 294.5 FLOOR BEAM UPPER FLANGE FROM RBL 9 TO RBL 12; WL 208. / [01] VERIFIED THE APPLICABILITY OF SRM 53-10-51-0I-2 AND SRM 53-10-51-1A-1;[22] FABRICATED -1 T-CHORD FROM BAC1503-101052 7050-T76511 LOT#1494632-1; -2 (4EA) ANGLES FROM 7075T6#0.080' CLAD LOT# 1462657-1; -3 (2EA) STRAPS / -4(4EA) TAPERED FILLERS AND -5 (3EA) TAPERED FILLER FROM 7075T6#0.071' CLAD LOT# 1497836-1; -6 FILLER FROM 7075T6#0.080' CLAD LOT# 1492623-1; -7 SHIM FROM 7075T6#0.032' CLAD LOT# 1457911-2. TREATED... IAW SRM 53-10-51-2R-16 REPAIR 16 TABLE 201.... OK TO PRIME REPAIR PARTS AND REWORKED AREAS;[23] INSPECTED ACTION 22; OK TO PRIME;[24] APPLIED TWO LAYERS OF BMS 10-11 TO THE REPAIR PARTS AND REWORKED AREAS IAW SRM 53-10-051-2R-16 REPAIR 16 STEP 4 J ... OK TO INSTALL;[25] INSPECTED ACTION 24; OK TO INSTALL;[26] COMPLETED PARTIAL STEP 1;[27] INSTALLED REPAIR PARTS IAW SRM 51-40-02 AND IAW SRM 53-10-51-2R-16 REPAIR 16;[28] VERIFIED ITEM 27 CORRECTIVE ACTIONS. <BR>VERIFIED STEP 1.;[29] VERIFIED MEASUREMENTS.

More about the Boeing 737-7H4