Service difficulty report · Strap · Boeing 73771B

Difficulty date
September 11, 2024
Submitted
October 23, 2024
Operation
Air carrier
Aircraft
N7854B
Make and model
Boeing 73771B
Aircraft serial
29372
Aircraft time
51,205 hours, 33,957 cycles
Part
Strap
Condition
Corroded
Location
Zone 100
Stage of operation
IN
How discovered
V
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 SUPPORT STRAP LOCATED ON BS 787 AND STRINGER 26R AFT CARGO COMPARTMENT 2024-572513<[01] REPLACED SUPPORT STRAP LOCATED ON BS 787 AND STRINGER 26R AFT CARGO COMPARTMENT IAW B737-700 SRM 51-10-02. MEASURES OF CORROSION ARE: L: 1.1200 IN W: 0.4785 IN. TOOL USED: ELECTRONIC CALIPER P/N: 500-196-30 S/N: A23329368.;[02] CORRECTED STEP 1.<BR>REPLACED SUPPORT STRAP LOCATED ON BS 787 AND STRINGER 26R AFT CARGO COMPARTMENT IAW B737-700 SRM 51-10-02. MEASURES OF CORROSION ARE: L: 1.1200 IN W: 0.4785 IN. PERFORMED GENERAL VISUAL INSPECTION NO FOUN ADDITIONAL DAMAGE. TOOL USED: ELECTRONIC CALIPER P/N: 500-196-30 S/N: A23329368.;[03] CORRECTED STEP 2.<BR>REPLACED SUPPORT STRAP LOCATED ON BS 787 AND STRINGER 26R AFT CARGO COMPARTMENT IAW B737-700 SRM 51-10-02 AND DWG 453A2611 SHEET: 1 REV: C. MEASURES OF CORROSION ARE: L: 1.1200 IN W: 0.4785 IN. PERFORMED GENERAL VISUAL INSPECTION NO FOUN ADDITIONAL DAMAGE. TOOL USED: ELECTRONIC CALIPER P/N: 500-196-30 S/N: A23329368.;[04] CORRECTED STEP 3.<BR>SUPPORT STRAP LOCATED ON BS 787 AND STRINGER 26R AFT CARGO COMPARTMENT MUST BE REPLACED DUE TO FOUND SEVERAL CORROSION (EXFOLIATION CORROSION) MEASURES OF CORROSION ARE: L: 1.1200 IN W: 0.4785 IN D: 0.00. TOOL USED: ELECTRONIC CALIPER P/N: 500-196-30 S/N: A23329368. PERFORMED GENERAL VISUAL INSPECTION NO FOUND ADDITIONAL DAMAGE. REPLACED SUPPORT STRAP IAW B737-700 SRM 51-10-02 AND DWG 453A2611 SHEET: 1 REV: C.;[05] TASK CARD COMPLETE.

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